Standard Comments Checklist

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1 November 2012 Standard Comments Checklist Scope: Prescriptive 2500 square feet, conventional light frame wood construction, single family dwelling Red Text = Specific code requirements based on design criteria This Standard Comments Checklist is provided to assist the applicant with assembling a comprehensive set of plans that will result in their project moving smoothly through the plan review process in the least amount of time. The requirements captured within this checklist are relevant to most residential projects but should not be considered exhaustive. Providing the items identified will aid in both the predictability and timeliness of the plan review process. This list represents the provisions of the State of Oregon Residential Specialty Code (ORSC), 2011 Edition, based on the 2009 International Residential Code. Liberties have been taken with Code language for sake of readability. If exact code text is required, see referenced code sections. TABLE of CONTENTS General/Inspections 1 Exiting 14 Foundation 2 Guardrails/Stairways/Ramps 15 Moisture Control and Decay Protection 6 Glazing 16 Lumber Grading 7 Garage 17 Floors 7 Bathrooms 18 Lateral Bracing 9 Insulation 19 Walls 11 Smoke Alarms 20 Roof 12 Carbon Monoxide Alarms 20 Attic 14 Mechanical/HVAC 21 Interior 14 Flood/Wildfire 24 GENERAL & INSPECTIONS 1. A copy of the approved plans and the inspection record card are required to be maintained in a conspicuous place on the job site and be available to the construction inspector before construction starts and during all inspections. Sec. R Manufacturer's installation instructions and truss data sheets shall be available on the job site at the time of inspection. Sec. R Building Codes Division Department of Consumer and Business Services State of Oregon 1535 Edgewater St. NW, Salem, OR P.O. Box 14470, Salem, OR Fax: bcd.oregon.gov

2 3. Inspections are required at the following intervals: Sec. R It is the responsibility of the person doing the work to request the inspection and provide access to and means for inspection. a. Foundation: Prior to pouring the footing and/or foundation. b. Concrete Slab/Underfloor: Prior to pouring any thickened concrete slab intended for structural support, after all plumbing, electrical and mechanical has been placed under the floor or slab. Prior to installing floor sheathing, including the subfloor. c. Plumbing, mechanical, gas & electrical systems: Rough inspection prior to covering or concealment, before fixtures or appliances are set or installed, and prior to framing inspection. NOTE: Gas & mechanical may be simultaneously inspected with framing. d. Floodplain: For construction within floodplain area, upon placement of the lowest floor, including basement, and prior to further vertical construction, submit documentation, prepared and sealed by a registered design professional, of the elevation of the lowest floor, including basement. e. Framing: After all framing (including roof, firestopping and draftstopping) and masonry is complete and rough electrical, plumbing and heating equipment are in place, inspected and approved. f. After the framing inspection and prior to the installation of interior finishes, the building official shall be notified in writing by the general contractor that all moisture-sensitive wood framing members used in construction have a moisture content of not more than 19 percent of the weight of dry wood framing members. Sec R g. Other inspections as required to verify code compliance. NOTE: Special shear wall nailing, hold downs, etc. not visible at time of framing inspection will be required to be inspected separately. h. Insulation: After all insulation and required vapor barriers are in place, before interior wall covering is applied. i. Sheetrock: If drywall is used as component of lateral bracing system, it will be required to be inspected before tape and mud. Fire restive construction between dwelling units or due to location on property, after wall covering is in place and before gypsum board joints and fasteners are taped and finished. j. Final: After finish grading and the building is completed and Prior to occupancy. NOTE: All certifications must be submitted prior to Final Inspection being requested. 4. Separate permits are required for each of the following: electrical, plumbing, boilers (as required by Boiler Section) and mechanical (heating equipment, gas piping, ductwork, fans, wood stoves, etc.). Sec. R Piping or tubing to be embedded shall be tested by applying a hydrostatic pressure of not less than 100 psi and shall be maintained for 15-minutes during inspection (M2103.4). Exception: Continuous loop PEX systems may be tested with an air pressure test of 100 psi for 30-minutes. 6. Approved numbers or addresses shall be provided for all new buildings in such a position at to be plainly visible and legible from the street or road fronting the property. Sec. R Exterior walls of dwellings and accessory buildings less than 3-feet from property lines shall have not less than a 1-hour fire resistive rating. The fire resistive rating of exterior walls located less than 3-feet from property line shall be rated for exposure from both sides. Projections beyond the exterior wall shall not extend more than 12-inches into areas where openings are prohibited Openings shall not be permitted in exterior walls of dwellings located less than 3-feet from the property line. Penetrations shall be protected (Table R302.1). This distance shall be measured at a right angle from the face of the wall. (202 Definition. For Garage and Dwelling separation, see Table R FOUNDATION 8. Structures placed on or adjacent to slopes steeper than 3 horizontal to 1 vertical, ascending or descending, shall comply with Sec. R P a g e

3 9. The top surface of the footings shall be level; provide stepped footings where the bottom surface of the footings exceed 1 vertical in 10 horizontal Sec. R The finish grade shall slope away from foundation walls (or sidewalks adjacent to foundation walls) a minimum of 6" within the first 10'. Sec. R All exterior walls shall be supported on continuous solid or fully grouted masonry or concrete foundations or other approved (engineered) structural systems. Sec R403.1 & R Exterior footings, columns and piers shall extend below the frost line, which is a minimum of X below finish grade soil. Sec. R and Table (1). The following are exempt from frost depth protection: a. Freestanding accessory structures with an area of 600 sf or less, of light-framed construction, and an eave height of 10 or less; R , Exc #1. b. Freestanding accessory structures with an area of 400 sf or less, of other than light-framed construction, and an eave height of 10 or less; R , Exc #2. c. Decks not supported by a dwelling. Sec R , Exc # Provide a continuous footing in the garage opening to prevent differential settlement. The footing shall be provided with a minimum of two #4 bars. Sec. R Footing and wall sizes shall be as follows for conventional light-framed construction: These footing sizes are based on an allowable soil pressure of 1500 psf. On soil with a lower allowable soil pressure (i.e. clayey soils), footing sizes will be significantly different. Sec R & R NOTE: If the plans show foundation systems exceeding these minimum requirements, the foundation will be required to be constructed per the plan. a. Supporting one floor: 6" wall with 12"x6" ftg. b. Supporting two floors: 8" wall with 15"x7" ftg. c. Supporting three floors: 10" wall with 18"x8" ftg. 14. Foundation walls shall extend at least 6" above the finished grade (4 where masonry veneer used). Sec. R Foundation walls shall be constructed as specified in either Tables R (1) OR R (2). Reinforcement specified in these tables is Grade 60. A design prepared and stamped by an Oregon registered engineer is required for the following: Sec. R a. Walls are subject to hydrostatic pressure from groundwater. b. Walls supporting more than 48 of unbalanced backfill which do not have permanent lateral support at the top and bottom. 15. Where a construction joint is created between a concrete footing and stem wall, a means of connection shall be provided to accommodate lateral displacement (i.e. keyway or other method in accordance with accepted foundation design practices). Sec. R Plain concrete isolated footings supporting beams spaced not over 48 o.c. and not exceeding 4x8 or 6x6, which only support a single floor system whose total loads do not exceed 50 psf, shall be a minimum size of 18 in diameter or 15 square by 8 thick. NOTE: Plain outside concrete isolated footings enclosed in a crawl space: When the axial load exceeds 9,000 pounds the footing design shall be stamped by a design professional. Sec R Shall not exceed 30 square by 15 thick or 34 diameter by 17 thick. 17. Foundations located on expansive soils shall be designed by an Oregon registered engineer. Sec. R Masonry foundation walls in SDC D shall comply with the following: Sec. R a. Wall height shall not exceed 8 ft. b. Unbalanced backfill height shall not exceed 4 ft. 3 P a g e

4 c. Minimum nominal thickness for plain masonry foundation walls shall be 8 inches. d. Masonry stem walls shall have a minimum vertical reinforcement of one No.3 bar located a maximum of 4 feet on center in grouted cells. Vertical reinforcement shall be tied to the horizontal reinforcement in the footing. 19. Foundations in SDC D shall be reinforced as specified in Sec. R The following are noted: a. Bottom reinforcement shall be located a minimum 3 clear from the bottom of the footing. b. Where a construction joint is created between the footing and stem wall or a grouted masonry wall is used (masonry walls must be solid grouted), one #4 vertical 4 o.c. is required. The rebar shall be 3 clear from the bottom of the footing, have a standard hook and extend 14 into the stem wall. c. Foundation with grouted masonry stem wall supported on a concrete footing and stem wall shall have minimum one # 4 spaced at maximum 4-0 o.c. The vertical rebar shall extend to 3 clear of the bottom of the footing and have a standard hook. d. Foundations with stem walls shall be provided one #4 rebar within 12 of the top of the wall and one #4 rebar at the bottom of the footing, except monolithic foundations shall be permitted to have two #4 bars placed in the footing. e. Slabs-on-grade with turned down footings shall have one #4 bar at the top and bottom of the footing. f. Slabs-on-grade cast monolithically with a footing may have one #5 or two #4 bars located in the middle third of the footing depth. g. Where the slab is not cast monolithically with the footing, #3 or larger vertical dowels with standard hooks on each end shall be provided in accordance with Figure R Interior footings supporting required braced wall lines and cast monolithically with a slab on grade shall extend to a depth of not less than 12 below the top of the slab. Sec. R Plain concrete walls in SDC D shall comply with the following in addition to Table R (1) and the horizontal reinforcement required by Table R (1); plain concrete foundation walls supporting light-frame walls shall not exceed 8 feet in height, unbalanced backfill shall not exceed 4 feet in height and shall have a minimum thickness of 7.5 (reducible to 6 where wall height is a maximum of 4 6 ) Sec. R Concrete shall have the following minimum compressive strength: Table. R Concrete in items A. and B. below shall be air entrained when subject to freezing during construction and all concrete in items C. and D. shall be air entrained. Total air content shall be not less than 5% or more than 7%. a. Basement walls and foundations not exposed to weather: 2,500 psi. b. Basement and interior slabs on grade (except garage floor): 2,500 psi. c. Foundation or basement walls or other vertical walls exposed to the weather: 3,000 psi. d. Porches, carport slabs, steps exposed to the weather and garage floor slabs, min.3,500 psi. 23. If reinforcement is provided in the footing, an uncoated #4 bar as a grounding electrode shall be stubbed up at least 12 above the floor plate line and tightly attached with a 12 leg and 3 ties to a 20 rebar in the footing. The footing rebar shall be #4, minimum 3 from the bottom of the footing and encased with a minimum 2 of concrete. Sec. R Insulating Concrete Form (ICF) foundation walls in SDC D are required to be built as per Sec. R404.5 & R , R P a g e

5 25. Foundation plates shall be bolted with minimum 1/2" bolts embedded at least 7" into concrete or masonry and spaced not more than 6' apart with a minimum of 2 bolts per piece with one bolt within 12", but not less than 7 bolt diameters from each end of each piece. Sec. R In SDC D, anchor bolts shall be located within 12 from the ends of each sill plate section, interior braced wall lines supported on continuous foundations required by Sec R and at all exterior walls. In SDC D-2, hot dipped galvanized plate washers, a minimum (1/4 )x3 x3 shall be provided between the foundation sill plate and nut. Anchor bolt spacing shall be reduced to 4 o.c in buildings over 2 stories. Sec. R , R & R Holddowns shall be placed according to manufacturers specifications. Holdowns shall be installed in forms before inspection. Install one #4 rebar 3 to 5 inches from the top of the foundation where SSTB anchor bolts are placed. Install one #4 rebar within the cone of strap type holdowns. SSTB anchor bolts shall not be placed closer then 5-inches to foundation wall ends or corners. Strap type holdowns shall not be placed closer to foundation wall ends or corners than manufacturer specifications to develop required design strength. Openings such as vents, beam pockets, or block outs shall be considered a foundation end and end distances shall apply. An approved hanger or post with positive connection may be substituted if beam pockets are required to be eliminated. 27. Where stepped foundations occur in SDC D, the following requirements apply: Sec R a. Where the height of a required braced wall panel that extends from foundation to floor above varies more than 4, the braced wall panel shall be constructed in accordance with Figure R b. Where cripple walls occur between the top of the foundation and the lowest floor framing, the bracing requirements for a story shall apply. 28. Provide sill sealer between the wall and foundation where the foundation wall encloses a heated space. Sec. N Crawl space foundation ventilation requires 1 SF/150 SF of under-floor area. At least one vent shall be within 3' of each corner. Vent openings shall be provided with corrosion-resistant wire mesh with the least dimension being 1/8". Sec. R a. The area may be reduced to 1/1500 of the under-floor area where the ground surface is covered with an approved vapor barrier material and the required openings are placed so as to provide cross-ventilation of the space, one such ventilation opening is within 3' of each corner of the building. The installation of operable louvers shall not be permitted. b. Ventilation openings may be omitted on one side. c. Vent openings are not required where continuously operated mechanical ventilation is provided at a rate of 1 cfm for each 50 sq ft of underfloor space floor area and the ground is covered with an approved ground cover. 30. Access shall be provided to all under-floor spaces. Access through the floor shall be 18 x24 ; through the perimeter wall shall be 16 x24 Sec. R If the furnace is installed in the crawl space, the opening must be large enough to remove the largest piece of equipment but not less than 22"x30". The 22 wide x 30 high access shall be provided to the working space in front of the equipment. Sec. M Buildings within a flood zone are required under floor space openings as specified in Sec R The finished ground level of the under-floor space shall be equal to or higher than the outside finished ground level. Sec. R P a g e

6 32. Masonry chimney and fireplace foundations shall be minimum 12 thick and shall extend at least 6 beyond the face of the fireplace or support wall on all sides. Footings shall be below frost depth as noted above, Sec. R Masonry or concrete chimneys in SDC D shall be reinforced and anchored as specified in Sec. R & R MOISTURE CONTROL & DECAY PROTECTION 33. Drains shall be provided around all concrete or masonry foundations enclosing habitable or usable spaces located below grade (except where the foundation is installed in well drained ground or sand-gravel mixture soils). Sec. R Provide a 6 mil black polyethylene ground cover lapped 12 at all joints over the entire surface of the crawl space, turned 12 up the foundation wall. Sec N The underfloor grade shall be cleaned of all vegetation, organic material, and construction materials, Sec. R Ground covers shall be a minimum 6-mil black polyethylene or other approved material of equal perm rating. Ground cover shall be lapped 12-inches at all joints and cover the entire crawl space. Edges shall turn 12-inches up the foundation wall. Sec. N Damp proofing foundation walls shall be installed as follows: Sec. R406. a. Masonry foundation walls enclosing basements shall be damp proofed by applying not less than 3/8" of Portland cement parging to the wall from footing to finish grade. The parging shall be covered with a coat of approved bituminous material applied at the recommended rate. For habitable rooms see item 'C'. b. Concrete construction enclosing basements shall be damp proofed by applying a coat of approved bituminous material to the wall from the footing to the finish grade at the recommended rate. c. Where a high water table or other severe soil-water conditions are known to exist, exterior foundation walls of habitable rooms or storage space below grade shall be waterproofed with membranes extending from the top of the footing to the finish grade. The membrane shall consist of either 2-ply hot-mopped felts, 6mil PVC, 55# roofing, 40mil polymer or equivalent material. The laps in the waterproofing membrane shall be sealed. 37. Where there is evidence that the groundwater table can rise to within 6" of the finished grade at the building perimeter or that surface water does not readily drain from the building site, the grade in the under-floor space shall be as high as the outside grade, unless an approved drainage system is provided. Sec. R The following locations require the use of decay-resistant or pressure treated wood: Sec. R317. a. In the crawl space, wood joists with less than 18" clearance and wood girders with less than 12" clearance to exposed earth. b. All sills which rest on concrete or masonry exterior walls and are less than 8 above exposed earth. c. Sills and sleepers on a concrete or masonry slab which is in direct contact with the ground unless separated from the slab by an impervious moisture barrier. d. The ends of wood girders entering exterior masonry or concrete walls having clearances of less than ½ on tops, sides, and ends. e. Wood siding, sheathing and wall framing on the exterior of a building having a clearance of less than 6" from the ground. f. Wood siding, sheathing, and wall framing on the exterior of a building shall have a clearance of not less than 6-inches from the ground or less than 2-inches measured vertically from concrete, except when approved wood of natural decay resistance or approved pressure treated wood as set forth in Sec. R317.1, Item 5. 6 P a g e

7 g. Wood structural members supporting moisture-permeable floors or roofs which are exposed to the weather, such as concrete or masonry slabs, unless separated from such floors or roofs by an impervious moisture barrier. h. Wood furring strips or other wood framing members attached directly to the interior of exterior masonry or concrete walls below grade except when an approved vapor retarder is applied to the interior of the exterior wall. i. All wood in contact with the ground and which supports permanent structures intended for human occupancy shall be approved wood suitable for ground contact use. j. Posts, poles and columns supporting permanent structures which are embedded in concrete in direct contact with the ground or embedded in concrete exposed to the weather shall be approved pressure treated wood suitable for ground contact use. Sec. R k. Exposed glue-laminated timbers. The portion of the glued-laminated timbers that form the structural supports of a building or other structure and are exposed to weather and not properly protected by a roof, eave or similar covering shall be pressure treated with preservative, or be manufactured from naturally durable or preservative-treated wood. Sec. R & Manufacturers Installation Instructions. 39. All field-cut ends, notches and drilled holes of preservative-treated wood shall be treated in the field in accordance with AWPA M4. Sec. R All fasteners, except ½ diameter or greater steel bolts, used in treated wood are required to be hot-dipped galvanized steel, stainless steel or other approved corrosion resistant fasteners. Sec. R Wood column shall be approved treated wood unless supported by piers projecting 1" above the floor or finish grade or 6 above exposed earth and separated by an approved impervious barrier. Sec. R LUMBER GRADING 42. All load-bearing dimension lumber is required to be identified by a grade mark or certificate of inspection issued by an approved agency. Sec. R502.1, R602.1 & R Unless noted otherwise on the plans, all structural lumber is assumed to be: Joists, rafters and beams up to 4" thick - Douglas Fir #2 or better; Beams, posts and timbers greater than 4" in thickness - Douglas Fir #1 or better. If other lumber is to be used, advise this office, prior to construction. Note: Construction, Standard and Utility are not equivalent to DF 1, 2 & 3. Joists, rafters, headers and beams are all assumed to be installed on edge. FLOORS 43. Concrete floor slabs are required to comply with the following: a. Minimum 3.5 thick. R b. Slabs on expansive soils will be required to be designed by an Oregon registered engineer. Sec. R c. All vegetation, top soil and foreign material is required to be removed. Sec. R d. Fill material under slabs shall be compacted to assure uniform support and shall not exceed 24" for clean sand or gravel and 8" for earth. Sec A 4" base course consisting of clean graded sand, gravel or crushed stone passing a 2" sieve shall be placed on the prepared subgrade when the slab is below grade. The base course is not required when the slab is on well-drained or sand-gravel mixture soils. Sec e. Polyethylene sheeting with joints lapped not less than 12 or an approved equal shall be placed between the concrete slab and the base course, except it may be omitted from detached or attached garages and utility buildings and other unheated accessory structures. Sec. R P a g e

8 f. Slabs within or adjacent to buildings that have electrical wiring, that may be used for livestock are required an equipotential grid within the slab. NEC. Contact the Electrical Inspector for information. 44. Floor joists/girders spans shall conform with Tables R (1), R (2), R (1), R (2), R502.5(1), R502.5(2) & R502.5(3). Sec R Floor joists shall have 2" thick solid blocking the full depth of the joist at the ends of the joists except where both ends are nailed to a header, band or rim joist or adjoining stud. Sec. R Manufactured joists shall be blocked per the manufacturer's requirements. 46. Joists under and parallel to bearing partitions shall be doubled or a beam adequate to support the load shall be used. Bearing partitions perpendicular to joists shall not be offset from supporting girders, walls or partitions more than the joist depth unless the joists are sized to carry the additional load. Sec. R Cantilevered floor joists shall not exceed the nominal depth of the joist, except see Table R (1) if supporting a light frame bearing wall and roof only. Exterior balcony cantilevers shall comply with Table R (2). Sec. R Where manufactured joists are used a similar manufactured rim joist shall be used rather than sawn rim joists per mfg. instructions. 49. Where post and beam or girder construction is used to support floor framing, positive connections shall be provided to ensure against lateral displacement. Provide gussets on both sides of post-beam connection. Where the post is greater than 4 in length, additional lateral support is required. See Figure R Sec. R Openings in floor framing shall be framed with a header and trimmer joists. For openings not exceeding 4', the header joist may be a single member the same size as the floor joist. When the header joist is within 3 of the trimmer joists bearing location, the trimmer joist may be a single member. When the header joist span exceeds 4ft, the trimmer joists and header joists shall be doubled and of sufficient cross-section to support the floor joist framing into the header. Approved hangers shall be used for the header joist to trimmer joists connections when the header joist span exceeds 6ft. Sec. R If supporting heavy loads, or the joists have an excessive span, additional supports may be required. 51. When there is usable space both above and below the concealed space of a floor/ceiling assembly, draftstops shall be installed so the area of the concealed space does not exceed 1,000sf. Draftstopping shall divide the concealed space into approximately equal areas. Where the assembly is enclosed by a floor membrane above and a ceiling membrane below, draft stopping shall be provided in floor/ceiling assemblies under the following circumstances: Sec. R a. Ceiling is suspended under the floor framing. b. Floor framing is constructed of truss-type open-web or perforated members. c. Draft stopping materials shall be 1/2-inch gypsum board, 3/8-inch wood structural panels, and 3/8-inch Type 2-M-W particleboard or other approved material adequately supported. Draftstops shall be installed parallel to the floor framing members. Sec. R Floor joists shall have a bearing of not less than 1 ½ on wood or metal and 3 on masonry or a 1x4 ribbon strip and nailed to the adjacent stud. Sec. R Floor joists shall be supported laterally at the ends by full depth solid blocking, except when the end is nailed to a rim joist or adjoining stud; or otherwise provided with lateral support to prevent rotation. For engineered floor joists such as I-joists and LVL floor systems, see manufacturers installation instructions. Sec. R P a g e

9 54. Wood structural panel floor sheathing shall be appropriately labeled for the span between joists. Panels are required to be installed perpendicular to the supports. Sec. R Decks supported by attachment to an exterior wall shall be positively anchored to the primary structure and designed for both vertical and lateral loads (decks less than 18 high are not required to be laterally braced). The use of toenails or nails is prohibited. Where the positive connection cannot be verified during inspection, decks shall be self-supporting. Decks with cantilevered framing members shall be designed for the required uplift. Sec. R Decks supporting a total load of 50 psf (40 LL + 10 DL), the connection of the deck ledger of pressurepreservative-treated or approved decay resistant species, and a 2-inch nominal lumber or approved engineered wood band joist bearing on a sill plate or wall plate shall be constructed with ½ inch lag screws or bolts with washers in accordance with Table R Lag screws, bolts and washers shall be hotdipped galvanized or stainless steel. The lag screws or bolts shall be placed 2 inches in from the bottom or top of the deck ledgers and between 2 and 5 inches in from the ends. The lag screws or bolts shall be staggered from the top to the bottom along the horizontal run of the deck ledger. Deck ledger connections not conforming to Table R shall be designed in accordance with accepted engineering practice. Sec. R The lateral load connection required by Sec. R shall be permitted to be in accordance with Figure R Hold-down tension devices shall be installed in not less than two locations per deck, and each device shall have an allowable stress design capacity of not less than 1500 pounds. Sec. R Notches in solid lumber joists and beams shall not exceed 1/6 th of the depth of the member, shall not be longer than 1/3 rd of the depth of the member and shall not be located in the middle 1/3 rd of the span. Notches at the ends of the member shall not exceed 1/4 th the depth of the member. The tension side of members 4 or greater in nominal thickness shall not be notched except at the ends of the members. The diameter of holes bored or cut into members shall not exceed 1/3 rd the depth of the member. Holes shall not be closer than 2 to the top or bottom of the member, or to any other hole located in the member. Where the member is also notched, the hole shall not be closer than 2 to the notch. Cuts, notches and holes bored in trusses, laminated veneer lumber, glue-laminated members or I-joists are not permitted unless the effect of such penetration is specifically considered in the design of the member. Sec. R LATERAL BRACING 59. See Section R for all applicable requirements. 60. Braced wall panels shall be constructed in accordance with the intermittent bracing methods specified in Section R , or the continuous sheathing methods specified in Sections R and R Mixing of bracing method shall be permitted as follows: 1. Mixing bracing methods from story to story is permitted. 2. Mixing bracing methods from braced wall line to braced wall line within a story is permitted, except that continuous sheathing methods shall conform to the additional requirements of Sec. R and R Mixing bracing methods within a braced wall line is permitted only in Seismic Design Categories A and B, and detached dwellings in Seismic Design Category C. The length of required bracing for the braced wall line with mixed sheathing types shall have the higher bracing length requirement, in accordance with Tables R (1) and R (2), of all types of bracing used. 61. Laterally braced wall lines are required. The amount and location of bracing shall be in accordance with Table R (1) or R (2). Exterior braced wall lines shall have a braced wall panel located 9 P a g e

10 at each end of the braced wall line; except method WSP (wood structural panel) may begin 8 from either end of a braced wall line in Seismic Design Category D2 not to exceed a total of 8 and a total of 12.5 from either end in Seismic Design Category C, spaced not more than 25 o.c. (See Exceptions). Braced wall lines shall be in line, except that horizontal offsets up to 4 are permitted, provided the total out-to-out offset dimensions in any braced wall line is not more than 8. The braced wall line may be assumed as an imaginary line to accommodate the 4 offset requirement. Braced wall lines greater than 12 in length shall have a minimum of two braced wall panels. The following are two of the seven methods permitted for lateral support. Sec. R a. The use of method 1, 1x4 diagonal braces or metal strap bracing, is not permitted in seismic design category D. b. Approved structural sheathing. i.e. plywood, wafer board, etc. Braced panels must be a minimum of 4' in width (except see alternate braced wall panel requirements below), maximum 12 in height and constructed to a maximum height to width ratio of 2-½:1. No increase in height is allowed for sheathing on both faces of the wall. 62. Where the braced wall panel starts within 8 of the corner, rather than directly at the corner, either a 24 panel is required at the corner or hold downs are required as shown on the plans (i.e. both sides of the nearest braced panel for segmental bracing or the nearest side for continuous bracing). Hold downs are to be 1,800 lb for a one-story or the top of two or three story building, 3,000 lb for 1 st of two story or 2 nd of three-story building, or 4,200 lb for 1 st of three story building. Sec. R Braced wall panel uplift load path: Braced wall panels located at exterior walls that support roof rafters or trusses (including stories below top story) shall have the framing members connected in accordance with one of the following: Sec. R : 1. Fastening in accordance with Table R602.3(1) where: a. The basic wind speed does not exceed 90 mph (40 m/s), the wind exposure category is B, the roof pitch is 5:12 or greater, and the roof span is 32 feet (9754 mm) or less, or b. The net uplift value at the top of a wall does not exceed 100 plf. The net uplift value shall be determined in accordance with Sec. R and shall be permitted to be reduced by 60 plf for each full wall above. 2. Where the net uplift value at the top of a wall exceeds 100 plf, installing approved uplift framing connectors to provide a continuous load path from the top of the wall to the foundation. The net uplift value shall be as determined in Item 1.2 above. 3. Bracing and fasteners designed in accordance with accepted engineering practice to resist combined uplift and shear forces. 64. In lieu of 4 wide braced panels an Alternate Braced Wall Panel (ABW) not less than 32" in width may be provided complying with Sec and can be further reduced to 16 or 24 next to an opening provided the provisions of Sec. R are met. If an alternate braced panel is used, the foundation shall be supported by a footing reinforced with a minimum of two #4 bars, one located a minimum 3, one located in the top of the wall and vertical reinforcement is to be 24 o.c. See Figure R NOTE: Additional seismic anchors, strapping and nailing is required. ABW are not permitted on stories other than the first story, and are not permitted on Masonry Foundations in SDC D. Sec. R Braced wall panels at exterior walls of buildings located in SDC D2 shall be supported by continuous footings at intervals not exceeding 50 feet. Two-story buildings in SDC D2 shall have all braced wall panels supported on continuous foundations. Braced wall lines located on the interior shall be supported on foundations as specified in Sec. R P a g e

11 66. Structural sheathing is required to be fastened directly to structural framing members. Sec. R When continuous wood structural panel sheathing (CS-WSP) is provided on all sheathable areas of exterior walls, and braced wall lines located on the interior, where required, including areas above and below openings, braced wall panel lengths may be in accordance with Table R , which permits braced panels down to 24 in length, depending on the window/door height to wall height ratio number of stories, seismic design category and wind speed. When this methodology is utilized, all vertical and horizontal panel edges, regardless of location, shall be blocked and edges nailed. CS-WSP panel location and corner construction shall be in accordance with Sec. R For method Continuous Portal Frame (CS-PF), see Sec. R For methods Portal Frame with hold-downs (PFH) and Portal Frame at Garage (PFG), see Sec. R & R WALLS 70. Buildings in SDC D with above grade concrete walls shall be in accordance with Sec R611, R612, or designed in accordance with accepted engineering practice. Sec. R Studs shall be continuous from a support at the bottom to a support at the top to resist loads perpendicular to the wall. The support shall be a foundation or floor, ceiling or roof diaphragm or other methods approved by the Building Official. Sec. R All openings in bearing walls shall be provided with adequate headers. Header sizes are required to be as noted on the plan or per Table R502.5(1) & R502.5(2). Sec. R Foundation cripple walls shall comply with the following: Sec. R602.9: a. They shall be framed of studs not less in size than the studs above. b. If over 4' in height, they shall have the size required for an additional story. c. When supporting three stories the cripple wall shall be 2x6 studs maximum 16 o.c. d. When cripple studs are over 14 in length and support an exterior wall or an interior braced wall, they shall be considered as first story walls and braced as specified in Wall-Bracing above. e. Cripple walls with a stud height less than 14 supporting exterior walls or an interior braced wall line shall be sheathed with wood structural panels attached to both the top and bottom plates or constructed of solid blocking. 74. Fire stopping is required in the following locations: Sec. R602.8, See Sec. R Fire stopping shall consist of 2" nominal lumber, two thickness of 1" nominal lumber with broken lap joints, one thickness of 23/32" wood structural panel with joints backed with 23/32" structural panel, ½ gypsum board or 1/4" cement based mill board. Batts or blankets of mineral wool or glass fiber or other approved materials securely retained in place may be permitted as a fire block. It may also be used for compliance with the 10 horizontal fireblocking in walls constructed using parallel rows of studs or staggered studs. Unfaced fiberglass batt insulation may be used provided it fills the entire cross section of the wall cavity to a minimum height of 16" measured vertically. Sec a. In concealed space of stud walls including furred spaces not to exceed 10', horizontally and at the ceiling and floor levels. Batts or blankets of mineral or glass fiber are acceptable fireblocking in walls constructed using parallel rows of studs or staggered studs. b. At all interconnections between concealed vertical and horizontal spaces such as occur at soffits, drop ceilings, cove ceilings etc. c. In concealed spaces between stair stringers at the top and bottom of the run. d. In openings around vents, pipes, ducts, chimneys and fireplaces at ceiling and floor levels. 11 P a g e

12 e. All spaces between chimneys and floors and ceilings shall be fireblocked with noncombustible material securely fastened in place. The fireblocking of spaces between chimneys and wood joists, beams or headers shall be to a depth of 1 and shall only be placed on strips of metal or metal lath laid across the spaces between combustible material and the chimney. Sec. R f. Fireblocking of cornices of a two family dwelling is required at the line of dwelling unit separation. 75. Asphalt-saturated felt or other approved material shall be applied over studs or exterior wall sheathing of exterior walls. Sec. R Approved weather-resistive exterior siding material is required. Sec. R T-1-11 siding without an approved subsiding cannot be used with stud spacing exceeding 16" o.c. unless it is labeled accordingly. Table R Exterior sheathing shall be dry before applying exterior cover. Sec. R Exterior wall envelopes shall be installed in a manor that allows water which may enter the wall to drain to the exterior. This shall be done by providing a minimum 1/8 inch space between the exterior veneer and the water resistive barrier installed beneath the veneer. Sec. R Exception: 1. The space is not required when the veneer is installed over a water-resistive barrier that is manufactured in a manor that provides enhanced drainage and meets the 75% drainage efficiency requirement of ASTM E2273 or other national standard. 2. The space is not required when the exterior veneer is manufactured to allow the 75% drainage efficiency of ASTM E The space is not required when window sills are equipped with pan flashings which drain to the exterior of the veneer surface in a through wall fashion and are made of approved corrosion-resistant materials, self-adhering membrane, or a combination thereof. If this method is done then detailing of the assembly shall be included in the construction drawings. ROOF 79. The roof shall be designed to sustain dead loads plus live loads. Sec. R Buildings constructed where the ground snow load exceeds 70 psf are required to be designed by an Oregon registered engineer. Sec. R The roof snow load is calculated at 80% of the ground snow load (but not less than 25 psf). Other reductions may be possible, depending on the roof pitch, covering and exposure to wind if calculated by an Oregon registered design professional (engineer or architect). 80. All trusses are required to be designed and stamped by an Oregon registered engineer, including homemade. Provide stamped truss engineering, including a truss layout to this office with plan submittal or at the job site prior to inspections. Trusses shall not be altered without a stamped design by an architect or engineer licensed in Oregon. Lateral bracing noted on the truss engineering must be installed. Sec. R Trusses shall be connected to wall plates by the use of approved connectors having a resistance to uplift of not less than 175 lbs. Sec. R Where subject to uplift pressure of 20 psf or greater, rater or truss ties shall be provided at bearing locations in accordance with Table R A continuous load path shall be provided to transmit the uplift forces from the rafter or truss ties to the foundation. Sec. R Where joists are not parallel to rafters, the rafters shall be tied with a rafter tie located as near the plate as practical. Rafter ties shall be spaced not more than 4' o.c. If rafters are not adequately tied, a ridge beam will be required. Rafters shall be framed to minimum 1" ridge board, not less in depth than the cut end of the rafter, or to each other with gusset plates as a tie. Sec. R P a g e

13 83. Collar ties or ridge straps to resist wind up lift shall be connected in the upper third of the attic space in accordance with Table R602.3(1). Collar ties shall be a minimum of 1 x4, spaced not more than 4 o.c. Sec. R Rafters may only be cut or notched as noted previously for floor joists. Sec. R Rafters and ceiling joists having a depth to thickness ratio exceeding 5:1 (2x10) nominal dimensions shall be supported laterally at bearing points by solid blocking to prevent rotation. Rafter and ceiling joists having a depth to thickness ratio exceeding 6:1 (2x12) shall also be supported laterally by solid blocking, bridging (metal or wood) or a continuous 1 x3 wood strip nailed across the rafter or ceiling joists at intervals not exceeding 8 o.c. Sec. R Valley and hip rafters not less than 2" nominal thickness and not less in depth than the cut end of the rafters shall be provided. Hip and valley rafters shall be supported at the ridge by a brace to a bearing partition or be designed to carry and distribute the specific load at that point. Sec. R Openings in roof and ceiling framing shall be framed with headers between ceiling joists or rafters as listed above for floor framing.. Sec. R Plywood roof sheathing and wood structural panels shall not exceed the allowable spans indicated by the panel ID # located on the panel and shall comply with Table R (1) or APA E30. Sec. R Flashings shall be installed at wall and roof intersections; wherever there is a change in roof slope or direction; and around roof openings. Sec. R Flashing against a vertical side wall shall be by the step-flashing method when using asphalt shingles. Sec. R Storm drainage: Where expansive or collapsible soils are known to exist, a controlled method of water disposal from roofs that will collect and discharge all roof drainage to the ground surface at least 5' from foundation walls or to an approved drainage system is required. Sec. R All nails and staples used to fasten roof coverings shall be corrosion resistant. Sec. R , R Fasteners for roof covering shall be in accordance with Chapter 9 of the Oregon Residential Specialty Code based on type of material used. In all cases, fasteners shall be long enough to penetrate into roof sheathing 3/4 inches or through the thickness of sheathing, whichever is less. Asphalt strip shingles shall have a minimum of four fasteners per strip shingle (or two per individual shingle), except where the roof slope exceeds 20:12. Provide appropriate fastening methods from the manufacturer. Sec. R Wood shakes shall be applied to roofs with solid or spaced sheathing and shall not be installed on a roof having a slope less than 3-inches in 12-inches. Wood shakes shall be applied in accordance with Sec. R Roof covering: a. The roofing material must be an approved material installed as specified in Sec. R905. b. Roof covering may not be installed on roofs having a pitch less than the following: Sec : 1) Composition shingles 2:12; If less than 4:12, double underlayment is required in accordance with Sec. R Sec. R ) Tile, clay or concrete shingles 2 ½:12. For slopes from 2 ½:12 4::12, double underlayment is required. Per Sec. R Sec. R ) Mineral-surfaced roll roofing 1:12. Sec. R P a g e

14 4) Wood shingles 3:12; If less than 4:12, they shall be installed with reduced exposure. Sec. R ) Wood shakes 3:12; Sec R Wood shakes shall be certified and labeled #1 grade conforming to CSSB (taper sawn shakes may be #1 or #2). Sec. R ) Metal roofing: Lapped, nonsoldered seam without applied lap sealant 3:12; Lapped, nonsoldered seam with applied lap sealant ½:12; Standing seam roof systems ¼:12. Sec. R ATTICS 96. Attic spaces having 30" or greater vertical clear height and exceed 30 square feet require a minimum 22"x30" attic access. A 30 minimum unobstructed headroom in the attic shall be provided at some point above the access opening. Sec. R Enclosed attics and enclosed rafter spaces formed where ceilings are applied directly to the underside of roof rafters shall have cross ventilation for each separate space by ventilating openings protected against the entrance of rain or snow. The net free ventilating area shall be 1/150 of the area of the space or 1/300, provided at least 50% and not more than 80% of the required vents are in the upper portion of the area at least 3' above eave or cornice vents with the balance provided by eave or cornice vents or the ventilation may be 1/300 if a 1 perm vapor barrier is installed on the warm side of the ceiling. A minimum 1 space shall be provided between the insulation and the roof sheathing at the location of the vent. Sec. R A one-inch minimum airspace is required between the underside of roof/deck sheathing and insulation in all vaulted areas. Ventilation shall be provided for at the lower end of each rafter space and cross flow ventilation shall be provided for at the top of each rafter space Sec. R806.1 and R Unvented attic assemblies are permitted if all conditions of Sec. R806.4 are met. INTERIOR 100. In all habitable rooms (living room, dining room, kitchen, bedrooms, family room, etc.), provide natural light and ventilation by means of windows equal to 8% of the room area, ½ of which shall be operable, or a mechanical ventilating system providing.35 air changes per hour in the room or a whole-house mechanical ventilation system is installed capable of supplying outdoor ventilation air of 15 cfm per occupant may be provided. The artificial light shall be capable of producing an average illumination of 6 foot-candles over the area of the room at a height of 30" above the floor. Sec. R Habitable rooms, hallways, bathrooms, toilet and laundry rooms and basements are required a ceiling height of 7' measured to the lowest projecting element. Beams spaced not less than 4' o.c. may project not more than 6" below the required ceiling height. Where the ceiling slopes, the minimum height of 7 must be maintained in ½ the required room area with no portion of the required floor area less than 5 in height. Basements without habitable spaces shall have ceilings not less than 6 8 except under beams, girders, ducts or other obstructions, the clear height shall be 6'4". For bathrooms with a sloped ceiling, see the special requirements noted in exception #4. Sec. R Minimum room sizes: habitable rooms must be at least 70 SF except kitchens; one 120 SF room required; with 7' minimum width for all habitable rooms. Sec. R304. EXITING 103. At least 1 side-hinged exit door not less than 3'x6'-8" shall be provided from the residence. Other doors shall not be required to comply with these minimum dimensions. The minimum width of a hallway or exit access is 3'. All egress doors shall be readily operable from the inside without the use of a key or special knowledge or effort. Sec. R311.2, R311.3 R P a g e

15 104. The required exit door shall allow direct access from the habitable portions of the dwelling to the exterior without requiring travel through a garage or carport. Sec. R A minimum 3'x3' landing is required on each side of exterior doors except at the top of an interior flight of stairs of three or fewer risers, provided the door does not swing over the stairs. The required exit door shall have a landing on each side of the door. The floor or landing shall be not more than 1 ½ lower than the top of the threshold, except the landing at the exterior of an exterior doorway shall not be more than 8" below the top of the threshold and shall be a min of 36 in the direction of travel. Sec. R Basements with habitable space and every sleeping room shall have at least one openable emergency escape and rescue opening.. The door/window must be operable from the inside to a full clear opening without the use of keys, tools or special knowledge. Egress windows are required to have a minimum net clear openings, height of 24", width of 20" and 5.7 SF opening (except grade floor windows not more than 44" above or below the exterior finish grade may have a minimum net clear opening area of 5 SF). The max sill height is 44" from the floor. Emergency escape and rescue openings with a finished sill height below the adjacent ground elevation shall be provided with a window well IAW Sec R Sec. R310. GUARDRAILS/STAIRWAYS/RAMPS 107. Porches, balconies or raised floor surfaces located more than 30" above the floor or grade below shall have guards not less than 36" in height. Open sides of stairs with a total rise of more than 30" above the floor or grade below shall have guards not less than 34" in height measured vertically from the nosing of the treads. Required guardrails shall have rails such that a 4" diameter sphere cannot pass through. The triangular openings formed by the riser, tread and bottom rail of a guard at the open side of a stairway may be of such a size that a sphere 6" in diameter cannot pass through. Required guards on open sides of stairways shall have intermediate rails which do not allow passage of an object 5 or more in diameter. Opening limitations for required guards on open sides of stairways are applicable above the second riser of the stair. Sec. R Stair risers shall be not less than 4 or more than 8. The minimum tread depth is 9 inches. Where the tread depth is less than 10, a nosing not less than ¾ but not more than 1 ¼ shall be provided on stairways with solid risers. Open risers are permitted, provided the opening between treads does not permit the passage of a 4 diameter sphere, except the limitation does not apply to stairs with a total rise of 30 or less. The minimum headroom clearance is 6'-8" measured from the sloping plane adjoining the tread nosing or from the floor surface of the landing. The minimum stairway width is 3' except 30" is acceptable if another stairway 3' wide is provided from the floor. Handrails may not project more than 4 ½ into the required width. Sec. R through R Handrails shall be provided on at least one side of each continuous run of treads or flight with four or more risers. The continuous handrail required for winders shall be located on the side where the tread is narrower. The handrail height, measured vertically from the sloped plane adjoining the tread nosing shall be 30"-38" in height and shall be continuous the full length of the stair. Ends shall be returned or shall terminate in newel posts or safety terminals. Circular handrails shall have an outside diameter of 1 ¼ 2. If not circular it shall have a perimeter dimension of 4-6 ¼ with maximum cross section of 2 ¼. Handrails with a perimeter greater than 6 ¼ shall provide a graspable finger recess area on both sides of the profile as specified in Sec. R , item #2. Sec. R All required handrails shall be of one of the following types or provide equivalent graspability: Type I: Handrails with a circular cross section shall have an outside diameter of at least 1¼-inches and not greater than 2-inches. If the handrail is not circular, it shall have a perimeter dimension of at least 15 P a g e

16 4-inches and not greater than 6¼-inches with a maximum cross section of dimension of 2¼inches. Type II: Handrails with a perimeter greater than 6¼-inches shall provide a graspable finger recess area on both sides of the profile. The finger recess shall begin within a distance of ¾-inch measured vertically from the tallest portion of the profile and achieve a depth of at least 5/16-inch within 7/8-inch below the widest portion of the profile. This required depth shall continue for at least 3/8-inch to a level that is not less than 1¾-inches below the tallest portion of the profile. The minimum width of the handrail above the recess shall be 1¼-inches to a maximum of 2¾-inches. Edges shall have a minimum radius of 0.01-inches. Sec. R Handrails and guardrails shall be constructed to withstand a minimum live load of 200-pounds when applied in any direction at any point along the top rail. Table R Winding and spiral stairs see Sec. R Required exterior exit balconies, stairs and similar exit facilities shall be positively anchored to the primary structure to resist both vertical and lateral forces. Such attachment shall not be accomplished by use of toenails or nails subject to withdrawal. Sec. R Enclosed accessible space under stairs shall have walls, under stair surfaces and soffits protected on the enclosed side with ½ gypsum board. Sec. R There shall be a floor or landing at the top and bottom of each stairway, except at the top of an interior flight of stairs, provided a door does not swing over the stairs. The width of the landing shall not be less than the stairway served and it shall have a minimum dimension of 36 measured in the direction of travel. A flight of stairs shall not have vertical rise larger than 12 between floor levels or landings. Sec. R All interior and exterior stairs shall be provided with an artificial light source located in the immediate vicinity of each landing at the top and bottom of the stair. Exterior stairs shall be provided with an artificial light source located in the immediate vicinity of the top landing of the stair. Controls for the stair lighting shall be as specified in the Electrical Code Sec Sec. R Egress ramps shall have a maximum slope of 1:8. Handrails shall be provided as noted above on at least one side of all ramps exceeding a 1:12 slope. A minimum 3' x 3' landing shall be provided at the top and bottom of ramps, where doors open onto the ramp and where the ramp changes direction. Sec. R GLAZING 118. Provide safety glazing including but not limited to: the following locations: Each unit of glazing shall be permanently identified by the manufacturer. Sec. R308. Some of these are as follows: a. Glazing in swinging doors. b. Glazing in fixed and sliding panels of sliding door assemblies and panels in sliding and bifold closet door assemblies. c. Glazing in storm doors. d. Glazing in doors and enclosures for hot tubs, whirlpools, saunas, steam rooms, bathtubs and showers. Glazing in any part of a building wall enclosing these compartments where the bottom edge of the glazing is less than 60" measured vertically above any standing or walking surface. e. Glazing in an individual fixed or operable panel adjacent to a door where the nearest vertical edge is within a 24" arc of the door in a closed position and whose bottom edge is less than 60" above the floor or walking surface except when there is an intervening wall or other permanent barrier between the 16 P a g e

17 door and the glazing or the glazing is in a wall perpendicular to the closed door, other than the wall toward which the door swings when opened. f. Glazing that meets all the following conditions: In lieu of safety glazing, protective bar (1 ½ height minimum) may be installed on the accessible side(s) of the glazing 36" 2" above the floor. The bar shall be capable of withstanding a horizontal load of 50 plf without contacting the glass. Sec ) Exposed area of an individual pane greater than 9 sq ft. 2) Bottom edge less than 18" above the floor. 3) Top edge greater than 36" above the floor. 4) One or more walking surfaces within 36" horizontally of the glazing. g. All glazing in railings regardless of an area or height above a walking surface including structural baluster panels and nonstructural in-fill panels. h. Glazing in walls and fences enclosing indoor and outdoor swimming pools and spas when the bottom edge of the glazing is less than 60 above a walking surface and within 60 horizontally of the water s edge. This shall apply to single glazing and all panes in multiple glazing. i. Glazing adjacent to stairways, landings and ramps within 36 horizontally of a walking surface when the exposed surface of the glass is less than 60 above the pane of the adjacent walking surface. Except when a solid wall or panel extends from the plane of the adjacent walking surface to 36 above the floor and the construction at the top of that wall or panel is capable of withstanding the same horizontal load as the protective bar or a guardrail or handrail including balusters is provided. j. Glazing adjacent to stairways within 60 horizontally of the bottom tread of a stairway in any direction when the exposed surface of the glass is less than 60 above the nose of the tread. Exceptions in previous section (i) apply. GARAGE 119. Attached garages are required the following minimum fire-protection. Sec. R302.5: a. Openings from a garage directly into a sleeping room are not permitted. b. Openings between a garage and residence shall be equipped with a solid wood door not less than 1 3/8" in thickness, solid or honeycomb core steel doors not less than 1 3/8 thick, or 20 minute rated door. c. Ducts penetrating the wall separating the dwelling from the garage are permitted providing they are constructed of steel having a thickness not less than 26 ga. and having no supply or return air openings into the garage. When a vibration isolator is used in the garage duct, it must be installed at least 18" from the penetration. Vibration isolators shall be installed as per Sec. M d. The garage shall be separated from the dwelling and its attic area by means of ½ gypsum board applied to the garage side of the wall. e. Garages beneath habitable rooms shall be separated from all habitable rooms above by not less than 5/8 type X gypsum board. NOTE: An inspection of the sheetrock will be required. Sec The sheetrock is required to be installed perpendicular to the ceiling framing and fasted at maximum 6 o.c. Table R , footnote e. f. Where separation is a floor-ceiling assembly, the structure supporting the separation shall also be protected with ½ gypsum board or equivalent Garage and carport floors shall be an approved noncombustible material and shall be sloped toward the main vehicle entry doorway. Sec. R Appliances having an ignition source shall be elevated such that the source of ignition is not less than 18 above the floor in garages which includes rooms or spaces that are not part of the living space and communicate with the garage through openings. NOTE: A hermetically sealed, submersible condensate pump is not required to be elevated. See BCD interpretation #G Appliances located in garages shall 17 P a g e

18 be protected from impact by automobiles. Sec M See Figure M for barrier protection examples. BATHROOMS 122. The center line of water closets shall be not less than 15" from adjacent walls/partitions or tub. The edge of water closet is to be minimum 4 from the edge of a lavatory. A minimum 21" clear is required in front of water closets. Fixtures shall be spaced as shown in Figure R All shower compartments, regardless of shape, shall have a minimum finished interior of 1,024-square inches and be of sufficient size to encompass a circle with a diameter not less than 30". OPSC Sec The minimum required area and dimensions shall be measured at a height equal to the top of the threshold and at a point tangent to its centerline. The minimum area and the dimensions shall be maintained to a point 70-inches above the shower drain outlet with no protrusions other than the fixture valve or valves, shower head, and safety grab bars or rails. OPSC Sec Thresholds shall be of sufficient width to accommodate a minimum 22-inch door. OPSC Sec The wall area above built-in tubs having installed shower heads and in shower compartments shall be finished with a smooth, hard and nonabsorbent surface to a height of not less than 6' above the floor. If gypsum board is used as a base or backer board for adhesive application of tile or similar material shall be a type manufactured for that use. Sec. R307.2 & R702. Water resistant gypsum board may be used on shower ceilings provided the ceiling framing does not exceed 12-inches on center. All cut or exposed edges, including those at wall intersections, shall be sealed as recommended by the manufacturer. Sec. R Any room with a bathtub, shower, or spa facilities shall be provided a mechanical ventilation system. Ventilation shall be either Intermittent - 80 cfm or continuous - 20 cfm. Ventilation air shall be exhausted directly to the outside. Sec. R & M Bathrooms without bathing or spa facilities shall be provided mechanical ventilation of 50cfm or windows not less than 3 sf, ½ of which shall be openable. For rooms larger than 75 sf, the intermittent ventilation shall provide a change of air every 12 minutes. The vent fan shall be controlled by a de humidistat, timer or similar means of automatic control. Sec. R303.4, M & M Maximum sound ratings are as follows: Continuous ventilation fans = 1.0 sone Intermittent fans = 3.0 sone Remote fans (4-feet or more away) are exempt 126. Showers and tub/shower combinations shall be equipped with control valves of the pressure balance, the thermostatic mixing or the combination pressure/thermostatic mixing valve types with high limit stop. The high limit stops shall be set to limit water temperature to be a maximum of 120-degrees. The water heater thermostat shall not be considered a suitable control for meeting this provision. OPSC Sec Shower heads shall be of the water conserving type, maximum flow of 2.5-gallons per minute. ORS item c Not more than 75% of the floor area of a bathroom or toilet room is permitted to have a sloped ceiling less than 7-feet in height, provided an area of 21-inches by 24-inches in front of toilets and lavatories has a minimum of 6-feet, 4-inches in height, measured from the finished floor. An area of 24-inches by 30- inches in front of and inside a tub or shower shall have a minimum of 6-feet, 4-inches in height, measured from the standing surface of the fixture. Sec. R ex P a g e

19 INSULATION 128. The Residential Energy Code: All conditioned spaces shall comply with Table N1101.1(1) & two additional energy measures from Table N1101.1(2). The requirements in Table N1101.1(2) shall apply to both Tables N1101.1(1) & N1104.1(1). The following specific standards are applicable: Sec. N & N1104. a. Windows: minimum U All windows must be labeled showing the class. Site built windows are not permissible with this path. New windows in additions may have a maximum U-value of 0.65 where necessary to retain architectural consistency with remaining windows. Sec. N b. Exterior doors. Minimum U=0.20, except a maximum 28 sf of exterior door area per dwelling unit can have a U-factor of.54 or less. c. Wall Insulation. R-21. Advanced framing R-19 may be substituted. Wall insulation requirements apply to all exterior wood framed, concrete or masonry walls that are above grade, including cripple walls and rim joist areas. d. Underfloor Insulation. R-30. Foundation perimeter insulation may NOT be substituted for the underfloor insulation. e. Ceilings. Flat ceilings R-38; vaulted ceilings (ceiling pitch 2:12 or greater) R-30 (ceiling insulation less than R-38 may not be in more than ½ of heated area), except that vaulted areas less than 150 SF total area may be R-21. f. Skylights: minimum U Skylight area installed at 2% or less of total heated space floor area shall be deemed to satisfy this requirement with vinyl, wood or thermally broken aluminum frames and double-pane glazing with low-emissivity coatings. g. Forced Air Ducts. R-8 in all unheated areas. h. Basement Walls. R-15 including all walls below grade extending not more than 24 above grade. Concrete or masonry walls more than 24 above grade must be provided minimum R-21 insulation. i. Slab Floor Edge. R-15. Insulation must be placed from the top of the slab down 24" or from the top down to the bottom of the slab and horizontally back under the slab for a total of 4". For monolithic slabs, insulation must extend from the top of the slab down to the bottom of the thickened edge. Above grade protection must be provided for insulation installed on the exterior side of the slab. All slab edges at junctures between heated and unheated spaces must be insulated. For slab-on-grade floors with hydronic heat the entire slab is to be insulated with R-10 in addition to the slab edge requirements Insulation facings, such as vapor barriers, shall not be exposed in the attic, crawl space or any other area unless the flame-spread of the facing material is 25 or less and smoke density is not greater than 450. Sec. R If plastic foam insulation is exposed, it shall be approved to be exposed or shall be protected as required in Sec. R Foam plastics for insulating concrete form walls on the interior of habitable spaces shall be covered in accordance with Sec. R316.4 (i.e. ½ sheetrock). Sec. R Provide a vapor barrier with 1 perm dry cup rating or less on the warm side (in winter) of all insulation in exterior walls and interior floors (except garage concrete slab floors) of heated residential buildings. In all exterior ceilings without an attic space above, an approved vapor barrier having a 0.5 perm cup rating or less shall be installed on the warm side of the insulation. Lap edges at the framing members. Sec. N P a g e

20 133. High-efficiency lighting systems. A minimum of 50% of the permanently installed lighting fixtures shall be compact or linear fluorescent, or a lighting source that has a minimum efficacy of 40 lumens per input watt. Screw-in compact fluorescent lamps comply with this requirement. The building official shall be notified in writing at final inspection. Sec. N Exterior joints around windows and door frames, between wall cavities and windows or door frames, between wall and foundation, between wall and roof, between wall panels, at penetrations or utility services through walls, floors and roofs and all other openings in the exterior envelope shall be sealed. Sec N NOTE: Recessed light fixtures in ceilings that separate conditioned from unconditioned space shall meet one of the following criteria. Additionally, the fixture s trim shall be gasketed or caulked to prevent air leakage. Sec. N a. IC rated with no penetrations between the inside of the recessed fixture and ceiling cavity, and the annular space between the ceiling cutout and lighting fixture shall be sealed. b. IC rated with no more than 2.0 cfm air movement from the conditioned space to the ceiling cavity. The fixture shall be tested at 1.57 psi pressure difference and shall be labeled; or c. IC-rated, installed inside a sealed box constructed from a minimum ½ gypsum wallboard or preformed polymeric vapor barrier or other air-tight assembly manufactured for this purpose, while maintaining minimum clearance of not less than ½ from combustible material and 3 from insulation. SMOKE ALARMS 135. Smoke alarms shall be provided in new dwellings and within existing buildings having an addition or alteration requiring a building permit. Alarms shall be provided in the following locations: Sec. R314: a. In each sleeping room. b. Outside of each separate sleeping area in the immediate vicinity of the bedrooms. c. On each additional story, including basements and cellars. In dwelling units with split levels and without an intervening door between the adjacent levels, a smoke alarm installed on the upper level Required smoke alarms shall not be located within kitchens or garages. Ionization smoke alarms shall not be located closer than 3 horizontally from the door to a kitchen; the door to a bathroom containing a tub or shower; or the supply registers of a forced air heating or cooling system. A smoke alarm installed within 20 (direct linear path) of a cooking appliance shall be photoelectric or the alarm shall have an approved alarm silencing means. Sec. R Smoke alarms shall be wired as follows: a. In new construction, alarms shall be interconnected such that the actuation of one alarm will actuate all the alarms in the individual unit providing an alarm that will be audible in all sleeping areas. Required smoke alarms shall receive their primary power from the building wiring when such wiring is served from a commercial source, and when primary power is interrupted, shall receive power from a battery. Wiring shall be permanent and without a disconnecting switch other than those required for overcurrent protection. b. Alterations/Additions: Smoke alarms installed under this provision need not be interconnected or hard wired (battery operated detectors are approved with 10year battery) unless other remodeling considerations require removal of the appropriate wall and ceiling coverings to facilitate concealed interconnected wiring. Sec. R & ORS CARBON MONOXIDE ALARMS 138. For new construction, approved single station carbon monoxide alarms or a household carbon monoxide system shall be installed. Sec. R315.1 Alarms shall be located in each bedroom or within 15 feet outside of 20 P a g e

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