Diaphragm Basics Using SDPWS. American Wood Council
|
|
- Herbert Cummings
- 7 years ago
- Views:
Transcription
1 Diaphragm Basics Using SDPWS American Wood Council
2 Copyright Materials This presentation is protected by US and International Copyright laws. Reproduction, distribution, display and use of the presentation without written permission is prohibited. American Wood Council
3 SDPWS and IBC 2008 SDPWS is referenced in 2012 IBC 3
4 2012 IBC SECTION 2305 GENERAL DESIGN REQUIREMENTS FOR LATERAL FORCE-RESISTING SYSTEMS General. Structures using wood-frame shear walls or woodframe diaphragms to resist wind, seismic or other lateral loads shall be designed and constructed in accordance with AF&PA SDPWS and the applicable provisions of Sections 2305, 2306 and
5 2012 IBC Wood diaphragms Wood-frame structural panel diaphragms. Wood-frame structural panel diaphragms shall be designed and constructed in accordance with AF&PA SDPWS. Where panels are fastened to framing members with staples, requirements and limitations of AF&PA SDPWS shall be met and Wood structural panel diaphragms are permitted to resist horizontal forces using the allowable shear capacities set forth in Table (1) or (2). The allowable shear capacities in Tables (1) and (2) are permitted to be increased 40 percent for wind design Single diagonally sheathed lumber diaphragms. Single diagonally sheathed lumber diaphragms shall be designed and constructed in accordance with AF&PA SDPWS Double diagonally sheathed lumber diaphragms. Double diagonally sheathed lumber diaphragms shall be designed and constructed in accordance with AF&PA SDPWS Gypsum board diaphragm ceilings. Gypsum board diaphragm ceilings shall be in accordance with Section Similar changes to for shear walls 5
6 Significant Changes to 2012 IBC 2009$ 2012$ SDPWS$$ 6
7 Diaphragm Types Rigid Diaphragm behaves as a fully rigid body D diaphragm < 2D shearwalls Inherent and accidental torsion considered in design Flexible Diaphragm behaves as a series of simple beams D diaphragm > 2D shearwalls No torsion Tributary loading to vertical resisting elements (shear walls) 7
8 Diaphragm Flexibility Idealized as Flexible Diaphragm load is distributed to shear walls based on tributary area (common for wood frame) Idealized as Rigid Diaphragm load is distributed to shear walls based on relative wall stiffness Semi-rigid Diaphragm load is distributed to shear walls based on relative stiffness of shear walls and diaphragm 8
9 SDPWS 2008 SDPWS Engineered Res and Non-Res ASD & LRFD Efficiencies in designs Shear wall provisions Segmented Perforated Force Transfer Around Openings 9
10 Chapter 4 - Lateral Force-Resisting Systems Wood Diaphragms 10
11 Chapter 4 Nominal Design Value Wind nominal unit shear capacity v w IBC allowable stress design value x 2.8 Seismic nominal unit shear capacity v s v s = v w /
12 Adjustment for Design Level Nominal unit shear values adjusted in accordance with to determine ASD allowable unit shear capacity and LRFD factored unit resistance. ASD unit shear capacity, v s : v s = 520 plf / 2.0 = 260 plf ASD reduction factor Reference nominal value LRFD unit shear capacity, v s : v s = 520 plf x 0.80 = 416 plf LRFD resistance factor Reference nominal value 12
13 Adjustment for Framing G Reduced nominal unit shear capacities determined by multiplying the tabulated nominal unit shear capacity by the Specific Gravity Adjustment Factor SG Adjustment Factor = [1.0-(0.50-G)] < 1.0 Example SG Adjustment Factors Species Combination Specific Gravity, G FACTOR = ( G) Southern Pine Douglas Fir-Larch Hem Fir Spruce Pine-Fir Western Woods
14 Chapter 4 - Lateral Force-Resisting Systems Wood Diaphragms 14
15 Deflections (4-term equations) Diaphragm TotalΔ = Δb + Δv + Δn + Δc Δ = bending shear nail slip chord connection slip 3 5vL vl ( ΔcX ) Len + 8EAb 4G t 2b v v 0.25 v L 1000Ga SDPWS nails unblocked and blocked 15
16 Comparison 3-term vs. 4-term 4-term Shear panel deformation and nail slip 3-term 16
17 Questions? 17
18 Diaphragm Design for Non-Residential and Multi-Family Buildings Bryan Readling, PE Senior Engineer, APA
19 Wood Structural Panels are by definition either Plywood or OSB (2302 & R202)
20 Wood Structural Panels come in two grades: Structural I, and Sheathing
21 Wood Diaphragms:! Design Concepts! Deflection Calculations! Design Values
22 Diaphragm Design: Load Effects Load, w: x L Shear, V: V=w(L/2-x) Moment, M: M=w*x/2*(L-x)
23 Horizontal Diaphragms PLAN VIEW
24 Diaphragm Design: Loads w L B Designed like a wide flange beam: Flanges ~ diaphragm chords or collector carry moment Web ~ wood panels and framing carry shear N
25 Wood Shear Wall and Diaphragms Design! Function of: fastener s size, spacing and panel thickness! Values in Tables all building codes! Alternately, capacities can be calculated by principles of mechanics
26 Diaphragm Capacity Table - SDPWS
27 Wood SW and Diaphragm Design Design Capacity Increase - Wind SDPWS Tables 4.2A, 4.2B, 4.2C, 4.2D! The allowable shear capacities have been increased by 40% for wind load resistance
28 40% Increase for Wind - Justification! Confidence in code wind load accuracy is high! The current shear wall and diaphragm tables are based on a 2.8 min. safety factor and it was agreed that a 2.0 safety factor is adequate, thus a 40% increase in tabulated values
29 Wood Diaphragms Design
30
31 Wind Design Key Points For wind design, shear wall and diaphragm deflections are probably not needed! E.g. the SDPWS doesn t even list G a for wind
32 Unblocked Diaphragm
33 Blocked Diaphragm
34 APA Research Report 138 Diaphragm Buckling Failure Diaphragm Shear Strength Failure
35 APA Research Reports 138 and 154! Shear wall history! Diaphragm history
36 Load Path Components 3. Diaphragm
37 Code Definitions Diaphragm! Horizontal or slopped system acting to transmit lateral forces to the vertical-resisting elements (IBC Sec ) Diaphragm
38 Load Path From Diaphragm to Shear Walls w C Ties Chord C Diaphragm reaction goes to shear walls T Chord T
39 Idealizing and Simplifying Complicated Structures! Sloped roofs! Offset roof planes! T-, L-shaped and other odd! Drag struts! Flexible v. rigid diaphragm
40 Sloped Roofs Idealize sloped wood roof diaphragms as if they are flat
41 Idealize it as flat Curved Diaphragms
42 Offset Roof Planes Offset roof planes Treat as two separate diaphragms Each with their own chords
43 Offset Roof Planes Offset roof planes A Provide lateral force resistance (shear walls) at diaphragm boundaries B 1 2 3
44 Offset Roof Planes Roof framing must keep diaphragm in plane Load on diaphragms may be different due to different heights! Proportion load rationally
45 Code Definitions Collector! A horizontal diaphragm element parallel and in line with the applied force that collects and transfers diaphragm shear forces to the vertical elements of the lateral-force-resisting system and/or distributes forces within the diaphragm. Collector (IBC Sec )
46 Collector! A collector works just like a post collects load from beam and transfers it to the foundation! A collector collects load from the diaphragm and transfers it to the shear wall
47 Collector Collector Collector
48 Irregular Diaphragm Shape Shear wall line 4 collector Shear wall line 3 Shear wall line A Shear wall line B collector collector Shear wall line C Shear wall line 2 collector Shear wall line D Shear wall line E Shear wall line 1
49 Shear Walls, Drag Struts 1,600 lb 1,600 lb v = 100 lb/ft collector v = 300 lb/ft v = 300 lb/ft 8 ft 32 ft 8 ft
50 Pre-recorded Webinar at
51 Framing Parallel to Strut Forces Collector Strap
52 Framing Perpendicular to Strut Forces Collector Strap
53 Flexible, Rigid and Semi-Rigid Diaphragms! Flexible! Diaphragm load is distributed to shear walls by tributary area! Rigid! Diaphragm load is distributed to shear walls by wall stiffness and torsion! Semi-rigid! Between flexible and rigid, dependent on stiffness
54 Diaphragm (Plan View) w L/2 L/2
55 Flexible Diaphragm w Δ sw Flexible.25wL.50wL.25wL Δ di L/2 L/2
56 Rigid - All Walls Identical w Δ sw Rigid (no.333wl Torsion).333wL.333wL L/2 L/2
57 Flexible v. Rigid w Stiffness 2K K 2K Flexible.25wL.50wL.25wL Rigid (no.40wl Torsion).20wL.40wL L/2 L/2
58 Prescribed Rigid Wood Diaphragms (SDPWS) Open front Cantilevered diaphragms Torsionally irregular
59 Rigid Analysis! Direct Shear:! Force proportioned based on stiffness (k)! Torsional Shear:! Force proportioned by! M = F x e! J = kd x 2 + kd y 2! k = stiffness wall! d = distance from center of rigidity! Examples in Breyer et al. F V = F k k kd F = M T J
60 Flexible, Rigid or Semi-Rigid Which do you have?! Prescribed flexible! Calculated flexible! Prescribed rigid! Else, semi-rigid
61 Prescribed Flexible Diaphragm In many cases wood diaphragms are permitted to be idealized as flexible ASCE 7-10 Sec. 26.2: Diaphragms constructed of wood structural panels are permitted to be idealized as flexible.
62 Calculated Flexible Diaphragm ASCE 7-10 Sec Diaphragms are permitted to be idealized as flexible when:! The diaphragm deflection is more than two times the average story drift of adjoining shear walls Δ DIAPHRAGM 2 x Δ SHEARWALLS
63 Calculated Flexible Diaphragm (Average Deflection) Δ SHEARWALLS Δ DIAPHRAGM The longer the diaphragm the more likely it is to calculate as flexible
64 Importance Calculating Shear Wall and Diaphragm Deflection! Rigid v. flexible diaphragm! Drift limit! Building separation
65 Deflections (4-term eqn s)! Shear Wall (IBC ) 8vh 3 vh Δ = he EAb G t v v n + h d b a! Diaphragm (IBC ) Δ = 3 5vL vl ( ΔcX Len + 8EAb 4G t 2b v v ) APA L350 ( has comprehensive listing of input parameters and examples
66 Deflection (3-term eqn.)! Diaphragm (SDPWS 4.2.2) Δ = 3 5vL 0.25vL ( ΔcX + + 8EAW 1000G W a 2 )! G a values for blocked and unblocked diaphragms
67 Diaphragms and Shear Walls! Deflection of Unblocked Diaphragms is 2.5 times the deflection of blocked diaphragm.! If framing members are spaced more than 24 o.c., testing indicates further deflection increase of about 20%, or 3 times the deflection of a comparable blocked diaphragm. (This is based on limited testing of the diaphragm by APA)
68 Prescribed Rigid Wood Diaphragms (SDPWS )
69 Prescribed Rigid Wood Diaphragms (SDPWS )! Open front! Cantilevered diaphragms
70 Semi-Rigid Diaphragm! Diaphragm flexibility - ASCE 7 Sec ! Unless it can be idealized as flexible or rigid, then:! The structural analysis shall consider the relative stiffness of diaphragms and shear walls
71 Semi-Rigid Diaphragm! Semi-rigid results in force distribution somewhere between rigid and flexible! Thus, an envelope approach can be used where the both rigid and flexible models are used and the highest forces from each are selected
72 Wind Design Key Points! Assuming the diaphragm is flexible is always allowed, except for the open front and cantilever case where rigid is prescribed
73 Shear Transfer from Roof Diaphragm - to Shearwall
74 Force Transfer from Diaphragm to Shearwall Roof Framing
75 APA Publications and Website Free APA publications
76 Questions?
Diaphragms and Shear Walls DESIGN/CONSTRUCTION GUIDE
Diaphragms and Shear Walls DESIGN/CONSTRUCTION GUIDE 007 APA THE ENGINEERED WOOD ASSOCIATION ALL RIGHTS RESERVED. ANY COPYING, MODIFICATION, DISTRIBUTION OR OTHER USE OF THIS PUBLICATION OTHER THAN AS
More informationPerforated Shearwall Design Method 1
Perforated Shearwall Design Method 1 Philip Line, P.E., Bradford K. Douglas, P.E., American Forest & Paper Association, USA Abstract Wood frame shearwalls are traditionally designed using full-height shearwall
More informationLoad Design Charts. R-CONTROL SIPs STRUCTURAL INSULATED PANELS. www.r-control.com CONTROL, NOT COMPROMISE.
R-CONTROL s STRUCTURAL INSULATED PANELS Note: Information deemed reliable at time of printing. Please visit www.r-control.com for latest information. June 2012 CONTROL, NOT COMPROMISE. www.r-control.com
More informationLP OSB Sheathing & Structural 1 Sheathing
Rated OSB Sheathing Roof Panels Span Ratings Max. Live Load Thickness Span Rating for Roofs (lbs)** 3/8" 24/0 30 7/16" 24/16 40 15/32" 32/16 70 1/2" 32/16 70 19/32" 40/20 130 23/32" 48/24 175 1-1/8" 48
More informationChapter 6 ROOF-CEILING SYSTEMS
Chapter 6 ROOF-CEILING SYSTEMS Woodframe roof-ceiling systems are the focus of this chapter. Cold-formed steel framing for a roof-ceiling system also is permitted by the IRC but will not be discussed;
More informationFormwork for Concrete
UNIVERSITY OF WASHINGTON DEPARTMENT OF CONSTRUCTION MANAGEMENT CM 420 TEMPORARY STRUCTURES Winter Quarter 2007 Professor Kamran M. Nemati Formwork for Concrete Horizontal Formwork Design and Formwork Design
More information4B-2. 2. The stiffness of the floor and roof diaphragms. 3. The relative flexural and shear stiffness of the shear walls and of connections.
Shear Walls Buildings that use shear walls as the lateral force-resisting system can be designed to provide a safe, serviceable, and economical solution for wind and earthquake resistance. Shear walls
More informationTECHNICAL NOTE. Design of Diagonal Strap Bracing Lateral Force Resisting Systems for the 2006 IBC. On Cold-Formed Steel Construction INTRODUCTION
TECHNICAL NOTE On Cold-Formed Steel Construction 1201 15th Street, NW, Suite 320 W ashington, DC 20005 (202) 785-2022 $5.00 Design of Diagonal Strap Bracing Lateral Force Resisting Systems for the 2006
More informationDesign of Cold-Formed Steel Shear Walls
DESIGN GUIDE 2 Design of Cold-Formed Steel Shear Walls March 1998 The following publication was developed by R.L. Brockenbrough & Associates for the American Iron and Steel Institute (AISI), In the production
More informationPOST AND FRAME STRUCTURES (Pole Barns)
POST AND FRAME STRUCTURES (Pole Barns) Post and frame structures. The following requirements serve as minimum standards for post and frame structures within all of the following structural limitations:
More informationFeaturing TJ Rim Board and TimberStrand LSL
#TJ-8000 SPECIFIER S GUIDE TRUS JOIST RIM BOARD Featuring TJ Rim Board and TimberStrand LSL Multiple thicknesses, grades, and products to cover all your rim board needs 1¼" Thickness matches lateral load
More informationStructural Design for Residential Construction
Structural Design for Residential Construction Cynthia Chabot, P.E. Chabot Engineering www.chabotengineering.com What is residential construction? One and two family dwellings Typically wood framed construction
More informationPost and Beam Construction
Post and Beam Construction A Presentation By the Canadian Wood Council Canadian Conseil Wood canadien Council du bois Early settlers introduced the concept of post and beam construction in North America
More informationSection A Roof Truss
Section A Roof Truss Truss Types Wisconsin Truss, Inc. can build a variety of truss types, pictured below are some common examples. Common Bobtail Scissor Mono Studio Dual Slope Cathedral Tray Vault Parallel
More informationCommon Errors in Truss Design
In today s competitive world of trusses, component manufacturers are always looking for ways to generate more efficient truss designs. Occasionally, truss designs need to be changed in order to be sealed
More informationNovember 20, 2013. Heather Sustersic had132@psu.edu. Dear Professor Sustersic,
November 20, 2013 Heather Sustersic had132@psu.edu Dear Professor Sustersic, The following technical report was written to fulfill the requirements specified in the Structural Technical Report 4 assignment
More informationSteel joists and joist girders are
THE STEEL CONFERENCE Hints on Using Joists Efficiently By Tim Holtermann, S.E., P.E.; Drew Potts, P.E.; Bob Sellers, P.E.; and Walt Worthley, P.E. Proper coordination between structural engineers and joist
More informationPage & Turnbull imagining change in historic environments through design, research, and technology
DCI+SDE STRUCTURAL EVALUATIONS OFFICE BUILDING, TOOL SHED & WATER TANK, AND BLACKSMITH & MACHINE SHOP BUILDINGS SAN FRANCISCO, CALIFORNIA [14290] PRIMARY PROJECT CONTACT: H. Ruth Todd, FAIA, AICP, LEED
More informationChapter 3 - Structural Design
Chapter 3 - Structural Design 3.0 General 3.0.1 Design Overview Greenhouse buildings are a complete structure including the structural support and enclosure elements. The primary structural system includes:
More informationDesign of Steel Structures Prof. S.R.Satish Kumar and Prof. A.R.Santha Kumar. Fig. 7.21 some of the trusses that are used in steel bridges
7.7 Truss bridges Fig. 7.21 some of the trusses that are used in steel bridges Truss Girders, lattice girders or open web girders are efficient and economical structural systems, since the members experience
More informationGeneral Approach. Structure Components. Is all lumber the same? Lumber Grades. Rafters Girders / Beams Columns. Sketch general structural layout
General Approach Sketch general structural layout Determine roof loading Determine required lumber dimensions Transfer load down the structure Structure Components Plants Structure Components Top Side
More informationresearch report Residential Hip Roof Framing Using Cold-Formed Steel Members RESEARCH REPORT RP06-2 American Iron and Steel Institute
research report Residential Hip Roof Framing Using Cold-Formed Steel Members RESEARCH REPORT RP06-2 2006 American Iron and Steel Institute Residential Hip Roof Framing Using Cold-Formed Steel Members i
More informationDiscipline: Structural Issued 04-26-06
California Department of General Services. Division of the State Architect. Product Acceptance Report STRUCTURAL SHEAR PANEL SURE-BOARD SERIES 200 PANELS PA-132 Discipline: Structural Issued 04-26-06 This
More informationRequirements for Fire Protection of Light Weight Floor Systems **Act 1 Revisited**
PHRC Webinar Series Tuesday, September 9, 2014 1:00 pm Requirements for Fire Protection of Light Weight Floor Systems **Act 1 Revisited** Presented by: Bryan Heitzmann Credit(s) earned on completion of
More informationNational Council of Examiners for Engineering and Surveying. Principles and Practice of Engineering Structural Examination
Structural Effective Beginning with the April 2011 The structural engineering exam is a breadth and exam examination offered in two components on successive days. The 8-hour Vertical Forces (Gravity/Other)
More informationBracing Webs in Trusses that have Dissimilar Configurations
Bracing Webs in Trusses that have Dissimilar Configurations Released April 25, 2006 Issue: Truss Design Drawings (TDD) that are prepared in accordance with ANSI/TPI 1, National Design Standard for Metal
More information4.3.5 - Breakaway Walls
4.3.5 - Breakaway Walls Elevation of a structure on a properly designed foundation reduces the potential for water damage from flooding. When the space below the lowest elevated floor is maintained free
More informationApproximate Analysis of Statically Indeterminate Structures
Approximate Analysis of Statically Indeterminate Structures Every successful structure must be capable of reaching stable equilibrium under its applied loads, regardless of structural behavior. Exact analysis
More informationHandling, Erection and Bracing of Wood Trusses
Handling, Erection and Bracing of Wood Trusses Follow these guidelines for safe installation of Wood Trusses. These guidelines should not be considered to be the only method for erecting and bracing of
More informationHURRICANE MITIGATION RETROFITS FOR EXISTING SITE-BUILT SINGLE FAMILY RESIDENTIAL STRUCTURES
HURRICANE MITIGATION RETROFITS FOR EXISTING SITE-BUILT SINGLE FAMILY RESIDENTIAL STRUCTURES 101 Retrofits Required. Pursuant to Section 553.844 553.884, Florida Statutes, strengthening of existing site-built,
More informationFOUNDATION DESIGN. Instructional Materials Complementing FEMA 451, Design Examples
FOUNDATION DESIGN Proportioning elements for: Transfer of seismic forces Strength and stiffness Shallow and deep foundations Elastic and plastic analysis Foundation Design 14-1 Load Path and Transfer to
More informationSECTION 7 Engineered Buildings Field Investigation
SECTION 7 Engineered Buildings Field Investigation Types of Data to Be Collected and Recorded A field investigator looking at engineered buildings is expected to assess the type of damage to buildings.
More informationNORDIC ENGINEERED WOOD RESIDENTIAL DESIGN CONSTRUCTION GUIDE NORDIC JOISTTM FSC-CERTIFIED PRODUCTS AVAILABLE
NORDIC ENGINEERED WOOD RESIDENTIAL DESIGN CONSTRUCTION GUIDE NORDIC TM FSC-CERTIFIED PRODUCTS AVAILABLE BRINGING NATURE S RESOURCES HOME Nordic Engineered Wood was founded in the year 2000 to develop and
More informationTJi 110 TJi 210 TJi 230 TJi 360 TJi. 560 JoiSTS. NEW! now featuring 18" and 20" TJi joists
#TJ-4500 SPECIFIER S GUIDE TJi 110 TJi 210 TJi 230 TJi 360 TJi 560 JoiSTS WESTERN CANADA Featuring Trus Joist TJi Joists for Floor and Roof applications uniform and predictable lightweight for Fast installation
More informationCollective Chord Behavior in Large Flexible Diaphragms
Collective Chord Behavior in Large Flexible Diaphragms J. W. Lawson 1 and C. N. Yarber 2 ABSTRACT The seismic behavior of large low-rise buildings with rigid walls and flexible diaphragms will be dominated
More informationCH. 2 LOADS ON BUILDINGS
CH. 2 LOADS ON BUILDINGS GRAVITY LOADS Dead loads Vertical loads due to weight of building and any permanent equipment Dead loads of structural elements cannot be readily determined b/c weight depends
More informationCITY OF LOS ANGELES CALIFORNIA
BOARD OF BUILDING AND SAFETY COMMISSIONERS VAN AMBATIELOS PRESIDENT E. FELICIA BRANNON VICE-PRESIDENT JOSELYN GEAGA-ROSENTHAL GEORGE HOVAGUIMIAN JAVIER NUNEZ CITY OF LOS ANGELES CALIFORNIA ERIC GARCETTI
More informationREPORT HOLDER: JENWEST ENTERPRISES LLC, DBA ADVANCED CONNECTOR SYSTEMS 321 SOUTH 1240 WEST #15 LINDON, UTAH 84042 EVALUATION SUBJECT:
0 ICC ES Report ICC ES (800) 423 6587 (562) 699 0543 www.icc es.org 000 Most Widely Accepted and Trusted ESR 3635 Reissued 04/2016 This report is subject to renewal 04/2018. DIVISION: 03 00 00 CONCRETE
More informationARCH 331 Structural Glossary S2014abn. Structural Glossary
Structural Glossary Allowable strength: Nominal strength divided by the safety factor. Allowable stress: Allowable strength divided by the appropriate section property, such as section modulus or cross
More informationdetermining wind and snow loads for solar panels America s Authority on Solar
determining wind and snow loads for solar panels America s Authority on Solar Determining wind and snow loads for solar panels 1 introduction As one of the largest and most established vertically integrated
More informationLoad-Span Tables for PS-1 Plywood
T E C H N I C A L N O T E -Span Tables for PS-1 Plywood Number Z802K March 1998 -span tables for specific wood structural panel applications are included in several APA publications. Recommended loads
More informationDesign for Nonstructural Components
14 Design for Nonstructural Components Robert Bachman, S.E., John Gillengerten, S.E. and Susan Dowty, S.E. Contents 14.1 DEVELOPMENT AND BACKGROUND OF THE REQUIREMENTS FOR NONSTRUCTURAL COMPONENTS... 3
More informationSEISMIC DESIGN. Various building codes consider the following categories for the analysis and design for earthquake loading:
SEISMIC DESIGN Various building codes consider the following categories for the analysis and design for earthquake loading: 1. Seismic Performance Category (SPC), varies from A to E, depending on how the
More informationType of Force 1 Axial (tension / compression) Shear. 3 Bending 4 Torsion 5 Images 6 Symbol (+ -)
Cause: external force P Force vs. Stress Effect: internal stress f 05 Force vs. Stress Copyright G G Schierle, 2001-05 press Esc to end, for next, for previous slide 1 Type of Force 1 Axial (tension /
More informationPERFORMANCE RATED I-JOISTS
PERFORMANCE RATED I-JOISTS ENGINEERED WOOD SYSTEMS 2 WOOD The Miracle Material Wood is the right choice for a host of construction applications. It is the earth s natural, energy efficient and renewable
More informationSolar Water Heating and Solar Electric Generators Installed on One or Two Family Dwellings
Solar Water Heating and Solar Electric Generators Installed on Category: Residential Construction Revised: [Paul L. Scarlett], Director Responsible Bureau Section: Development Services Center 1900 SW Fourth
More informationRESIDENTIAL ROOFING & RE-ROOFING, ROOF VENTILATION AND ROOF SHEATHING REQUIREMENTS MICHIGAN RESIDENTIAL CODE 2000
RESIDENTIAL ROOFING & RE-ROOFING, ROOF VENTILATION AND ROOF SHEATHING REQUIREMENTS MICHIGAN RESIDENTIAL CODE 2000 SECTION R905 REQUIREMENTS FOR ROOF COVERINGS R905.1 Roof covering application. Roof coverings
More information1997 Uniform Administrative Code Amendment for Earthen Material and Straw Bale Structures Tucson/Pima County, Arizona
for Earthen Material and Straw Bale Structures SECTION 70 - GENERAL "APPENDIX CHAPTER 7 - EARTHEN MATERIAL STRUCTURES 70. Purpose. The purpose of this chapter is to establish minimum standards of safety
More informationTHE DOW CHEMICAL COMPANY Issued: August 1, 2008 200 LARKIN CENTER 1605 JOSEPH DRIVE MIDLAND MICHIGAN 48674 (989) 638-8655 www.dowbuildingmaterials.
ICC EVALUATION SERVICE, INC. EvaluateP InformP Protect Los Angeles Business/Regional OfficeP 5360 Workman Mill RoadP Whittier, CA 90601 (562) 699-0543 phonep (562) 695-4694 fax DIVISION: Section: 6 WOOD
More informationINTRODUCTION STRUCTURAL DESIGN
INTRODUCTION to STRUCTURAL DESIGN A Beginner s guide to Gravity Loads and Residential Wood Structural Design by Albert Hilton Cohen Copyright AHC 1998-2002 All rights reserved. No part of this publication
More informationTimber Frame Construction
Timber Frame Construction Introduction Design and Detailing What is timber? Failure modes History of timber frame construction Forms of timber frame construction Live and dead loads Wind loads Roof construction
More information6 RETROFITTING POST & PIER HOUSES
Retrofitting Post & Pier Houses 71 6 RETROFITTING POST & PIER HOUSES by James E. Russell, P.E. 72 Retrofitting Post & Pier Houses Retrofitting Post & Pier Houses 73 RETROFITTING POST AND PIER HOUSES This
More informationThis handout is a guide only and does not contain all of the requirements of the Minnesota State Building Code or city ordinances.
Residential Decks Community Development Department Building Inspections Division 5200 85 th Avenue North / Brooklyn Park, MN 55443 Phone: (763) 488-6379 / Fax: (763) 493-8171 6/15 www.brooklynpark.org
More informationPRODUCT: Structural Insulated Panels (SIPs) DIVISION: Wood and Plastics (06) SECTION: Structural Panels (06 12 16)
PRODUCT: Structural Insulated Panels (SIPs) DIVISION: Wood and Plastics (06) SECTION: Structural Panels (06 12 16) Report Holder Structural Insulated Panel Association (SIPA) PO Box 1699 Gig Harbor, WA
More informationSTRUCTURAL CONCEPT FOR LIGHT GAUGE STEEL FRAME SYSTEM
Chapter 9 STRUCTURAL CONCEPT FOR LIGHT GAUGE STEEL FRAME SYSTEM 9.1 BACKGROUND Steel is widely used in the construction of multi-storey buildings. However, steel construction is seldom used and is traditionally
More informationBasics of Reinforced Concrete Design
Basics of Reinforced Concrete Design Presented by: Ronald Thornton, P.E. Define several terms related to reinforced concrete design Learn the basic theory behind structural analysis and reinforced concrete
More informationIntroduction to Beam. Area Moments of Inertia, Deflection, and Volumes of Beams
Introduction to Beam Theory Area Moments of Inertia, Deflection, and Volumes of Beams Horizontal structural member used to support horizontal loads such as floors, roofs, and decks. Types of beam loads
More informationINTRODUCTION TO BEAMS
CHAPTER Structural Steel Design LRFD Method INTRODUCTION TO BEAMS Third Edition A. J. Clark School of Engineering Department of Civil and Environmental Engineering Part II Structural Steel Design and Analysis
More informationBehaviour of Prefabricated Timber Wall Elements Under Static and Cyclic Loading
Behaviour of Prefabricated Timber Wall Elements Under Static and Cyclic Loading Patrick Schädle, Hans Joachim Blaß Lehrstuhl für Ingenieurholzbau und Baukonstruktionen Universität Karlsruhe, Germany 1
More informationEurocode 5: Design of timber structures
Eurocode 5: Design of timber structures Arnold Page, BSc, BD, MIWSc. Structural timber engineering consultant Introduction BS EN 1995 consists of three parts: Part 1-1: General. Common rules and rules
More information8/18/14. Introduction to. Framing. Terminology and Concepts
8/18/14 Introduction to Framing Terminology and Concepts Terminology: Framing Level Two points on exactly the same horizontal plane. Square Intersecting lines or faces that form an exact 90 angle. Plumb
More informationICC-ES Evaluation Report
ICC-ES Evaluation Report ESR-2369 Reissued May 1, 2010 This report is subject to re-examination in one year. www.icc-es.org (800) 423-6587 (562) 699-0543 A Subsidiary of the International Code Council
More informationGYPSUM BOARD, GYPSUM PANEL PRODUCTS AND PLASTER
CHAPTER 25 GYPSUM BOARD, GYPSUM PANEL PRODUCTS AND PLASTER User note: Code change proposals to this chapter will be considered by the IBC Structural Code Development Committee during the 2016 (Group B)
More informationSTEEL BUILDINGS IN EUROPE. Single-Storey Steel Buildings Part 5: Detailed Design of Trusses
STEEL BUILDIGS I EUROPE Single-Storey Steel Buildings Part 5: Detailed Design of Trusses Single-Storey Steel Buildings Part 5: Detailed Design of Trusses 5 - ii Part 5: Detailed Design of Trusses FOREWORD
More informationGYPSUM BOARD AND PLASTER
CHAPTER 25 GYPSUM BOARD AND PLASTER SECTION 2501 GENERAL 2501.1 Scope. 2501.1.1 General. Provisions of this chapter shall govern the materials, design, construction and quality of gypsum board, lath, gypsum
More informationResidential Deck Safety, Construction, and Repair
Juneau Permit Center, 4 th Floor Marine View Center, (907)586-0770 This handout is designed to help you build your deck to comply with the 2006 International Residential Building code as modified by the
More informationANCHOR: Metal securing device embedded or driven into masonry, concrete, steel or wood.
CONSTRUCTION TERMINOLOGY ANCHOR: Metal securing device embedded or driven into masonry, concrete, steel or wood. ANCHOR BOLT: Heavy, threaded bolt embedded in the foundation to secure sill to foundation
More informationCreep Behavior of Structural Insulated Panels (SIPs)
Creep Behavior of Structural Insulated Panels (SIPs) Results from a Pilot Study Dwight McDonald Marshall Begel C. Adam Senalik Robert J. Ross Thomas D. Skaggs Borjen Yeh Thomas Williamson United States
More informationMarch 14, 2007. Installation of Bay, Bow and Garden Windows
March 14, 2007 Re: Installation of Bay, Bow and Garden Windows Attached are the Atrium Companies, Inc recommendation for the installation of bay, bow and garden windows. These instructions were developed
More informationStructural Axial, Shear and Bending Moments
Structural Axial, Shear and Bending Moments Positive Internal Forces Acting Recall from mechanics of materials that the internal forces P (generic axial), V (shear) and M (moment) represent resultants
More informationTechnical Notes 3B - Brick Masonry Section Properties May 1993
Technical Notes 3B - Brick Masonry Section Properties May 1993 Abstract: This Technical Notes is a design aid for the Building Code Requirements for Masonry Structures (ACI 530/ASCE 5/TMS 402-92) and Specifications
More informationSTANDARD OPEN PATIO COVER
STANDARD OPEN PATIO COVER BUILDING & SAFETY DIVISION 201 E. LA HABRA BLVD. LA HABRA, CA 90631 62-90-9710 Call Before You Dig 1-800-227-2600 PLEASE NOTE: This information Bulletin is made available to assist
More informationHow To Design A Post Tensioned Deck For A Building
SAMUEL ÁVILA STRUCTURAL OPTION FACULTY CONSULTANT: THOMAS BOOTHBY UNIVERSITY OF CENTRAL FLORIDA S ACADEMIC VILLAGES ORLANDO, FL THESIS PROPOSAL EXECUTIVE SUMMARY DECEMBER 12, 2005 Introduction: The University
More informationReinforced Concrete Design
FALL 2013 C C Reinforced Concrete Design CIVL 4135 ii 1 Chapter 1. Introduction 1.1. Reading Assignment Chapter 1 Sections 1.1 through 1.8 of text. 1.2. Introduction In the design and analysis of reinforced
More informationExpected Performance Rating System
Expected Performance Rating System In researching seismic rating systems to determine how to best classify the facilities within the Portland Public School system, we searched out what was used by other
More informationRPS - sales@rpssolar.com - 858 755 4505-12478 San Bruno Cove, San Diego, CA 92130
RPS - sales@rpssolar.com - 858 755 4505-2478 San Bruno Cove, San Diego, CA 9230 SWH Solar Mount Rail R-MR-SW-SR-0.5, R-MR-SW-SR-2, R-MR-SW-SR-4, R-MR-SW-SR-4B, R-MR-SW-SR-7 Part No. MR-SW-SR-0.5, MR-SW-SR-2,
More informationJoist Models in Standard Structural Software
Joist Models in Standard Structural Software September 24, 2015 Dave Samuelson, P.E. Nucor New Product & Market Development Joe Pote, P.E. New Millennium Building Systems Learning Objectives What are the
More informationRoof Rehab (Roof truss) Classroom Activity
Roof Rehab (Roof truss) Classroom Activity The Classroom Activity introduces students to the context of a performance task, so they are not disadvantaged in demonstrating the skills the task intends to
More informationFlame Spread Performance of Wood Products
Flame Spread Performance of Wood Products Wood and wood-based products are widely used in interior wall, ceiling, and floor surfaces in all types of buildings. Appearance, acoustical qualities, and interior
More informationSection 5A: Guide to Designing with AAC
Section 5A: Guide to Designing with AAC 5A.1 Introduction... 3 5A.3 Hebel Reinforced AAC Panels... 4 5A.4 Hebel AAC Panel Design Properties... 6 5A.5 Hebel AAC Floor and Roof Panel Spans... 6 5A.6 Deflection...
More informationAsphalt Shingle Application Requirements
Alberta Allied Roofing Association Asphalt Shingle Application Requirements Section 1 Roof Decks 1.1 General Asphalt Shingles are not permitted to be installed directly over rigid insulation. When Asphalt
More informationThe Analysis of Open Web Steel Joists in Existing Buildings
PDHonline Course S117 (1 PDH) The Analysis of Open Web Steel Joists in Existing Buildings Instructor: D. Matthew Stuart, P.E., S.E., F.ASCE, F.SEI, SECB, MgtEng 2013 PDH Online PDH Center 5272 Meadow Estates
More informationWood Truss Restraint and Bracing Guide
BUILDERS Wood Truss Restraint and Bracing Guide Using Simpson Strong Tie Products To Meet the Recommendations of the Building Component Safety Information (BCSI) Guide (800) 999-5099 www.strongtie.com
More informationChapter 3 DESIGN AND CONSTRUCTION FEATURES IMPORTANT TO SEISMIC PERFORMANCE
Chapter 3 DESIGN AND CONSTRUCTION FEATURES IMPORTANT TO SEISMIC PERFORMANCE To satisfy the performance goals of the NEHRP Recommended Seismic Provisions, a number of characteristics are important to the
More informationAdvanced Structural Analysis. Prof. Devdas Menon. Department of Civil Engineering. Indian Institute of Technology, Madras. Module - 5.3.
Advanced Structural Analysis Prof. Devdas Menon Department of Civil Engineering Indian Institute of Technology, Madras Module - 5.3 Lecture - 29 Matrix Analysis of Beams and Grids Good morning. This is
More informationCONSTRUCTION DETAILS & LOAD DESIGN CHARTS
Office and Production 126 New Pace Rd., PO Box 279 Newcomerstown, OH 43832 1-800-446-2188, Fax: 740-498-4184 www.buildwithsips.com CONSTRUCTION DETAILS & LOAD DESIGN CHARTS Table of Contents Description
More informationSLAB DESIGN. Introduction ACI318 Code provides two design procedures for slab systems:
Reading Assignment SLAB DESIGN Chapter 9 of Text and, Chapter 13 of ACI318-02 Introduction ACI318 Code provides two design procedures for slab systems: 13.6.1 Direct Design Method (DDM) For slab systems
More informationPractical Approach to Designing Wood Roof Truss Assemblies
Practical Approach to Designing Wood Roof Truss Assemblies Rakesh Gupta, M.ASCE 1 ; and Pranueng Limkatanyoo2 Abstract: The objective of this research was to use a three-dimensional (3D) analysis method
More informationLateral load testing and analysis of manufactured homes
Lateral load testing and analysis of manufactured homes Koerner, Brian D. 1, Schmidt, Richard J. 2, Goodman, James R. 3, and Richins, William D. 4 ABSTRACT The lateral-load behavior of a single-wide manufactured
More informationRigid and Braced Frames
Rigid Frames Rigid and raced Frames Rigid frames are identified b the lack of pinned joints within the frame. The joints are rigid and resist rotation. The ma be supported b pins or fied supports. The
More informationIntroduction. Background
Introduction Welcome to CFS, the comprehensive cold-formed steel component design software. The endless variety of shapes and sizes of cold-formed steel members, combined with the complex failure modes
More informationImpact of Katrina on U.S. Housing Markets: Building Codes Change in Response to Catastrophic Risk
Impact of Katrina on U.S. Housing Markets: Building Codes Change in Response to Catastrophic Risk 49 th Annual Convention Society of Wood Science and Technology Delton Alderman USDA Forest Service Al Schuler
More informationMark Cramer Inspection Services, Inc.
Mark Cramer Inspection Services, Inc. 492 Twentieth Avenue, Indian Rocks Beach, FL 34635-2970 (727) 595-4211 Fax (727) 596-7583 Certified Member #12085 American Society of Home Inspectors Construction
More informationDESIGN OF SLABS. 3) Based on support or boundary condition: Simply supported, Cantilever slab,
DESIGN OF SLABS Dr. G. P. Chandradhara Professor of Civil Engineering S. J. College of Engineering Mysore 1. GENERAL A slab is a flat two dimensional planar structural element having thickness small compared
More informationStatics of Structural Supports
Statics of Structural Supports TYPES OF FORCES External Forces actions of other bodies on the structure under consideration. Internal Forces forces and couples exerted on a member or portion of the structure
More informationSupplement to IRC Wall Bracing Guide: Design Examples
Supplement to IRC Wall Bracing Guide: Design Examples Introduction This supplement to the IRC Wall Bracing Guide presents two case studies or wall bracing design examples to illustrate the various bracing
More informationDESIGN OF BLAST RESISTANT BUILDINGS IN AN LNG PROCESSING PLANT
DESIGN OF BLAST RESISTANT BUILDINGS IN AN LNG PROCESSING PLANT Troy Oliver 1, Mark Rea 2 ABSTRACT: This paper provides an overview of the work undertaken in the design of multiple buildings for one of
More informationDetailing of Reinforcment in Concrete Structures
Chapter 8 Detailing of Reinforcment in Concrete Structures 8.1 Scope Provisions of Sec. 8.1 and 8.2 of Chapter 8 shall apply for detailing of reinforcement in reinforced concrete members, in general. For
More informationbi directional loading). Prototype ten story
NEESR SG: Behavior, Analysis and Design of Complex Wall Systems The laboratory testing presented here was conducted as part of a larger effort that employed laboratory testing and numerical simulation
More informationPrepared For San Francisco Community College District 33 Gough Street San Francisco, California 94103. Prepared By
Project Structural Conditions Survey and Seismic Vulnerability Assessment For SFCC Civic Center Campus 750 Eddy Street San Francisco, California 94109 Prepared For San Francisco Community College District
More information