CONSTRUCTION SPAN TABLES AND THERMAL VALUE TABLES

Transcription

1 CONSTRUCTION SPAN TABLES AND THERMAL VALUE TABLES The enclosed tables, regulations and schedules are copies of various sections of the 2006 Ontario Building Code. These documents are issued for information ONLY and it is the user s responsibility to ensure the correct applications of the information contained herein. NOTE: These tables are prepared as a guide only. The conversions from metric to imperial dimensions are soft conversions. For legal purposes, use the metric dimensions or hard conversions. February 2007

2 Number of Floors Supported Table Minimum Footing Sizes Forming part of Sentence (1) (9 7/8) 200 (7 7/8) 0.40 (4.3) (13 ¾) 350 (13 ¾) 0.75 (8.1) (17 ¾) 500 (19 ¾) 1.0 (10.9) Notes to Table : (1) See Sentence (1)., (2) See Sentence (1)., (3) See Sentence (1). Table A. Vertical Reinforcement for 140 mm (5 ½ ) Flat Insulating Concrete Form Foundation Walls Maximum Height of Finished Ground Above Finished Basement Floor, Forming Part of Sentence (2) Maximum Vertical Reinforcement Maximum Unsupported Basement Wall Height 4m (8-0 ) 2.75m (9-0 ) 3.00m (9-10 ) 1.35 (4-5 ) 10M at 400 mm (15 ¾ ) o.c. 10M at 400 mm (15 ¾ ) o.c. 10M at 400 mm (15 ¾ ) o.c (5-3 ) 10M at 400 mm (15 ¾ ) o.c. 10M at 380 mm (15 ) o.c. 10M at 380 mm (15 ) o.c (6-7 ) 10M at 380 mm (15 ) o.c. 10M at 380 mm (15 ) o.c. 10M at 380 mm (15 ) o.c (7-3 ) 10M at 250 mm (10 ) o.c. 10M at 250 mm (10 ) o.c. 10M at 250 mm (10 ) o.c (7-9 ) n/a 10M at 250 mm (10 ) o.c. 10M at 250 mm (10 ) o.c (8-6 ) n/a 10M at 250 mm (10 ) o.c. 10M at 250 mm (10 ) o.c (9-10 ) n/a n/a 15M at 250 mm (10 ) o.c. Table B. Vertical Reinforcement for 190 mm (7 ½ ) Flat Insulating Concrete Form Foundation Walls Maximum Height of Finished Ground Above Finished Basement Floor, Forming Part of Sentence (2) Maximum Vertical Reinforcement Maximum Unsupported Basement Wall Height 4 m (8-0 ) 2.75 m (9-0 ) 3.00 m (9-10 ) 2.20 (7-3 ) none required 10M at 400 mm (15 ¾ ) o.c. 10M at 400 mm (15 ¾ ) o.c (7-9 ) n/a 10M at 300 mm (11 ¾ ) o.c. 10M at 300 mm (11 ¾ ) o.c (8-6 ) n/a 10M at 300 mm (11 ¾ ) o.c. 15M at 400 mm (15 ¾ ) o.c (9-10 ) n/a n/a 15M at 400 mm (15 ¾ ) o.c. Table C. Vertical Reinforcement for 240 mm (9 ½ ) Flat Insulating Concrete Form Foundation Walls Maximum Height of Finished Ground Above Finished Minimum Width of Strip Footings, mm(in) Supporting Exterior Walls (2) Supporting Interior Walls (3) Forming Part of Sentence (2) Maximum Vertical Reinforcement Maximum Unsupported Basement Wall Height Minimum Footing Area for Columns Spaced 3m (9ft 10in) o.c. (1), m 2 (ft 2 ) Basement Floor, 4m (8-0 ) 2.75 m (9-0 ) 3.00 m (9-10 ) 2.20 (7-3 ) none required none required none required 2.60 (8-6 ) n/a 15M at 400 mm (15 ¾ ) o.c. 15M at 400 mm (15 ¾ ) o.c (9-10 ) n/a n/a 15M at 400 mm (15 ¾ ) o.c.

3 Table A. Thickness of Solid Concrete and Unreinforced Concrete Block Foundation Walls Forming Part of Sentence (1) Maximum Height of Finish Ground Above Basement Floor or Crawl Space Ground Cover, Type of Foundation Wall Solid Concrete, 15 MPa (2200 psi) min. Minimum Wall Thickness, mm (in) Foundation Wall Laterally Unsupported at the Top (1) 150 (5 7/8) 0.8 (2-7 ) 1.5 (4-11 ) 200 (7 7/8) 1.2 (3-11 ) 2.15 (6-11 ) 250 (9 7/8) 1.4 (4-7 ) 2.3 (7-7 ) Foundation Wall Laterally Supported at the Top (1) strength 300 (11 ¾) 1.5 (4-11 ) 2.3 (7-7 ) 150 (5 7/8) 0.8 (2-7 ) 1.8 (5-11 ) 200 (7 7/8) 1.2 (3-11 ) 2.3 (7-7 ) 250 (9 7/8) 1.4 (4-7 ) 2.3 (7-7 ) Solid Concrete, 20 MPa (2900 psi) min. strength 300 (11 ¾) 1.5 (4-11 ) 2.3 (7-7 ) 140 (5 ½) 0.6 (2-0 ) 0.8 (2-7 ) 190 (7 ½) 0.9 (2-11 ) 1.2 (3-11 ) Unreinforced Concrete Block 240 (9 ½) 1.2 (3-11 ) 1.8 (5-11 ) 290 (11 3/8) 1.4 (4-7 ) 2.2 (7-3 ) Note to Table A.: (1) See Sentence Minimum Wall Thickness, mm (in) 190 (7 1/2) Maximum Height of Finished Ground above Basement Floor or Crawl Space Ground Cover, m (ft) Table B. Reinforced Concrete Block Foundation Walls Forming part of Sentence (4) Foundation Wall Laterally Unsupported at the Top (1) Continuous Vertical Reinforcement Minimum Bar Size Maximum Bar Spacing, Foundation Wall Laterally Supported at the Top (1) Continuous Vertical Reinforcement Maximum Bar Spacing, Minimum Bar Size (2) (2) 1.0 (3-3 ) 25 M 1.2 (3-11 ) 1.2 (3-11 ) 25 M 1.2 (3-11 ) (2) (2) 1.4 (4-7 ) 25 M 1.2 (3-11 ) 15M 1.2 (3-11 ) 1.6 (5-3 ) 25 M 0.8 (2-7 ) 15M 1.2 (3-11 ) 1.8 (5-11 ) 25 M 0.6 (23 5/8 ) 20M 1.2 (3-11 ) 2.0 (6-7 ) 25 M 0.4 (16 ) 20M 1.2 (3-11 ) (3) (3) 2.2 (7-3 ) 25M 1.2 (3-11 ) (7-11 ) (3) (3) 25M 1.2 (3-11 ) 1.4 (1-4 ) 25 M 1.0 (3-3 ) (2) (2) 1.6 (5-3 ) 25 M 1.0 (3-3 ) (2) (2) 1.8 (5-11 ) 25 M 0.8 (2-7 ) (2) (2) 240 (9 ½) 2.0 (6-7 ) 25 M 0.8 (2-7 ) 20M 1.8 (5-11 ) 2.2 (7-3 ) 25 M 0.8 (2-7 ) 25M 1.8 (5-11 ) (7-11 ) 25 M 0.6 (23 5/8 ) 25M 1.8 (5-11 ) 5 6

4 Table Nailing for Framing Forming Part of Sentence (1) Minimum Length Construction Detail Minimum Number or Maximum Spacing of Nails of Nails, mm (in) Floor joist to plate toe nail 82 (3 ¼) 2 Wood or metal strapping to underside of floor joists 57 (2 ¼) 2 Cross bridging to joists 57 (2 ¼) 2 at each end Double header or trimmer joists 76 (3) 300 mm (11 ¾ ) o.c. Floor joist to stud (balloon construction) 76 (3) 2 Ledger strip to wood beam 82 (3 ¼) 2 per joist Joist to joist splice (See also Table ) 76 (3) 2 at each end Header joist end nailed to joists along perimeter 101 (4) 3 Tail joist to adjacent header joist 82 (3 ¼) 5 (end nailed) around openings 101 (4) 3 Each header joist to adjacent trimmer joist 82 (3 ¼) 5 (end nailed) around openings 101 (4) 3 Stud to wall plate (each end) to nail 63 (2 ½) 4 Or end nail 82 (3 ¼) 2 Doubled studs at openings, or studs at walls or wall intersections and corners 76 (3) 750 mm (30 ) o.c. Doubled top wall plates 76 (3) 600 mm (23 5/8 ) o.c. Bottom wall plate or sole plate to joists or blocking (exterior walls) 82 (3 ¼) 400 mm (15 ¾ ) o.c. Interior walls to framing or subflooring 82 (3 ¼) 600 mm (23 5/8 ) o.c. Horizontal member over openings in non-loadbearing walls each end 82 (3 ¼) 2 Lintels to studs 82 (3 ¼) 2 at each end Ceiling joist to plate toe nail each end 82 (3 ¼) 2 Roof rafter, roof truss or roof joist to plate toe nail 82 (3 ¼) 3 Rafter plate to each ceiling joist 101 (4) 2 Rafter to joist (with ridge supported) 76 (3) 3 Rafter to joist (with ridge unsupported) 76 (3) See Table Gusset plate to each rafter at peak 57 (2 ¼) 4 Rafter to ridge board toe nail end nail 82 (3 ¼) 3 Collar tie to rafter each end 76 (3) 3 Collar tie lateral support to each collar tie 57 2 ¼) 2 Jack rafter to hip or valley rafter 82 (3 ¼) 2 Roof strut to rafter 76 (3) 3 Roof strut to loadbearing wall toe nail 82 (3 ¼) 2 38 mm x 140 mm (2 x 6 ) or less plank decking to support 82 (3 ¼) 2 Plank decking wider than 38 mm x 140 mm (2 x 6 ) to support 82 (3 ¼) 3 38 mm (2 ) edge laid plank decking to support (toe nail) 76 (3) 1 38 mm (2 ) edge laid plank to each other 76 (3) 450 mm (17 ¾ ) o.c. Column 1 2 3

5 Maximum Spans for Floor Joists General Case (1) Table A-1 Forming Part of Sentence (1) Maximum Span, m / ft-in Joist Size With Strapping (2) With Bridging With Strapping (2) and Bridging Joist Spacing, mm / in Joist Spacing, mm / in Joist Spacing, mm / in 300/12 400/16 600/24 300/12 400/16 600/24 300/12 400/16 600/24 38 x 89 2 x m m m m m m m m m x x m m m m m m m m m x x m m m m m m m m m x x m m m m m m m m m x x m m m m m m m m m Note to Table A-1: (1) Spans apply only where the floors serve residential areas as described in Table , or the uniformly distributed line load on the floor does not exceed that specified for residential areas as described in Table (2) See Sentence (5) for alternatives to strapping. Joist Size mm ft-in Maximum Spans for Floor Joists Special Cases (1) Table A-2 Forming Part of Sentence (1) and (2) Maximum Span, m / ft-in With Strapping (2) With Bridging With Strapping (2) and Bridging Joist Spacing, mm / in Joist Spacing, mm / in Joist Spacing, mm / in 300/12 400/16 600/24 300/12 400/16 600/24 300/12 400/16 600/ m 1.81 m 1.58 m 1.99 m 1.81 m 1.58 m 1.99 m 1.81 m 1.58 m m 2.85 m 9 m 3.14 m 2.85 m 9 m 3.14 m 2.85 m 9 m m 4 m 3.27 m 4.12 m 3.75 m 3.27 m 4.12 m 3.75 m 3.27 m m 4.28 m 3.91 m 4.99 m 4.75 m 4.18 m 5.27 m 4.79 m 4.13 m 38 x 89 2 x 4 38 x x 6 38 x x 8 38 x x x m 4.88 m 4.46 m 5.65 m 5.37 m 5.06 m 6.23 m 5.81 m 4.79 m 2 x Notes to Table A-2: (1) Spans apply only where the floors serve residential areas as described in Table , or the uniformly distributed live load on the floor does not exceed that specified for residential areas as described in Table (2) No bridging is assumed for spans for floor joists with concrete topping.

6 Joist Size, mm / in Maximum Spans for Ceiling Joists Attic not Accessible by a Stairway Table A-3 Forming Part of Sentence (1) Maximum Span, m / ft-in Joist Spacing, mm / in 38 x 89 / 2 x / / / x 140 / 2 x / / / x 184 / 2 x / / / x 235 / 2 x / / / x 286 / 2 x / / / 26-0 Joist Size, mm / in Maximum Spans for Roof Joists Specified Snow Load 2.0 kpa /41.8 lb/sq.ft. Table A-4 Forming Part of Sentence (1) Maximum Span, m / ft-in Joist Spacing, mm / in 38 x 89 / 2 x / / / x 140 / 2 x / / / x 184 / 2 x / / / x 235 / 2 x / / / x 286 / 2 x / / / 16-4 Joist Size, mm / in Maximum Spans for Roof Rafters Specified Snow Load 2.0 kpa / 41.8 lb/sq.ft. Table A-6 Forming Part of Sentence (1) Maximum Span, m / ft-in Joist Spacing, mm / in 38 x 89 / 2 x 4 7 / / / x 140 / 2 x / / / x 184 / 2 x / / / x 235 / 2 x / / / x 286 / 2 x / / / 18-1

7 Maximum Spans for Built-up Wood Floor Beams Supporting not more than One Floor Table A-8 Forming Part of Sentence (3) Maximum Span, Supported Size of Built-up Beam, m Length, 3:38x184 4:38x184 5:38x184 3:38x235 4:38x235 5:38x235 3:38x286 4:38x235 5:38x286 3: 2 x8 4: 2 x8 5: 2 x8 3:2 x10 4:2 x10 5:2 x10 3:2 x12 4:2 x12 5: 2 x Maximum Spans for Built-up Wood Floor Beams Supporting not more than Two Floors Table A-9 Forming Part of Sentence (3) Maximum Span, Supported Size of Built-up Beam, m Length, 3:38x184 4:38x184 5:38x184 3:38x235 4:38x235 5:38x235 3:38x286 4:38x235 5:38x286 3: 2 x8 4: 2 x8 5: 2 x8 3:2 x10 4:2 x10 5:2 x10 3:2 x12 4:2 x12 5: 2 x

8 Supported Length, Maximum Spans for Built-up Wood Beams Supporting not more than Three Floors Table A-10 Forming Part of Sentence (3) Maximum Span, Size of Built-up Beam, m 3:38x184 4:38x184 5:38x184 3:38x235 4:38x235 5:38x235 3:38x286 4:38x235 3: 2 x8 4: 2 x8 5: 2 x8 3:2 x10 4:2 x10 5:2 x10 3:2 x12 4:2 x :38x286 5: 2 x

9 Maximum Spans for Spruce-Pine-Fir Lintels Non-Structural Sheathing (1) No.1 and No.2 Grade Table A-15 Forming Part of Sentence (1) and (3) Maximum Span, m / ft-in (3)(4) Lintel Supporting Lintel Size, mm (in) (2) Exterior Walls Interior Walls 2: 38x89 / 2:2x / 4-2 2:38x140 / 2:2x / 6-3 Limited attic storage and 2:38x184 / 2:2x8 No values in this field 2.35 / 7-8 ceiling 2:38x235 / 2:2x / 9-5 2:38x286 / 2:2x / : 38x89 / 2:2x / / 6-2 Roof and ceiling only 2:38x140 / 2:2x / / 9-8 [tributary width of 0.6m 2:38x184 / 2:2x / / 12-8 (1-11 ) maximum] (5) 2:38x235 / 2:2x / / :38x286 / 2:2x / / : 38x89 / 2:2x / / 3-0 Roof and ceiling only 2:38x140 / 2:2x / / 4-5 [tributary width of 4.9m 2:38x184 / 2:2x / / 5-4 (16-0 ) maximum] (6) 2:38x235 / 2:2x / / 6-7 2:38x286 / 2:2x / / 7-7 2: 38x89 / 2:2x / / 2-5 2:38x140 / 2:2x / / 3-4 2:38x184 / 2:2x / / 3-11 Roof, ceiling and 1 storey (3)(6)(7) 2:38x235 / 2:2x / / 4-9 2:38x286 / 2:2x / / 5-5 2: 38x89 / 2:2x / / 2-2 Roof, ceiling and 2:38x140 / 2:2x / / :38x184 / 2:2x / / storeys (3)(6)(7) 2:38x235 / 2:2x / / 4-2 2:38x286 / 2:2x / / 4-9 2: 38x89 / 2:2x / / 1-11 Roof, ceiling and 2:38x140 / 2:2x / / 2-7 2:38x184 / 2:2x / / storeys (3)(6)(7) 2:38x235 / 2:2x / / :38x286 / 2:2x / / 4-5 Notes to Table A-15: (1) Where structural sheathing is used, lintel spans may be increased by 15%. Structural sheathing consists of a minimum 9.5mm thick structural panel conforming to CSA O121-M, CSA O151, CAN/CSA-O325.0 or CSA O437.0 fastened with at least two rows of fasteners to the exterior face of the lintel, and a single row to the top plates and studs. Fasteners shall conform to Table (2) A single piece of 89 mm (4 ) thick lumber may be used in lieu of 2 pieces of 38 mm (2 ) thick lumber on edge. (3) If floor joists span the full width of the building without support, lintel spans shall be reduced by 15% for Roof, ceiling and 1 storey, by 20% for Roof, ceiling and 2 storeys, and by 25% for Roof, ceiling and 3 storeys. (4) For ends of lintels fully supported by walls, provide minimum bearing length of 38 mm (2 ) for lintel spans up to 3 m (9-10 ), or minimum bearing length of 76 mm (3 ) for lintel spans greater than 3 m (5) Spans for 0.6 m (2-0 ) tributary width are calculated for lintels in end walls that support only a 0.6 m (2-0 ) width of roof and ceiling, but do not support roof joists, roof rafters or roof trusses. (6) Lintel spans are calculated based on a maximum floor joist, roof joist or rafter span of 4.9 m (16-0 ) and a maximum roof truss span of 9.8 m (32-2 ). Lintel spans may be increased by 5% if rafter and joist spans are not more than 4.3 m (14-0 ) and roof truss spans are not more than 8.6 m (28-2 ). Spans may be increased by 10% if rafter and joist spans are not more than 3.7 m (12-0 ) and roof trusses are not more than 7.4 m (24-3 ) (7) Spans apply only where the floors serve residential areas as described in Table , or the uniformly distributed live load does not exceed that specified for residential areas as described in Table

10 Maximum Allowable Clear Spans for Lintels in Flat Loadbearing Insulating Concrete Forms (ICF) Walls (1)(2)(3) (1-10M Bottom Bar) Table A-17 Forming Part of Sentence (1) Maximum Clear Span, m / ft-in Minimum Lintel Thickness, mm (in) ½ / ¼ / / /8 Minimum Lintel Depth, mm (in) Supporting Light-Frame Roof Only 1.41 / / / / / 8-4 Supporting ICF Second Storey and Light-Frame Roof Maximum Ground Snow Load, kn/m / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / Notes to Table A-17: (1) Deflection criteria is L/240, where L is the clear span of the lintel. (2) Linear interpolation is permitted between ground snow loads and between lintel depths. (3) 10M stirrups are required at a maximum d/2 spacing for spans greater than mm (47 ), where d is the distance from the top of the lintel to the level of the bottom reinforcing bar in the lintel.

11 Maximum Allowable Clear Spans for Lintels in Flat Loadbearing Insulating Concrete Form (ICF) Walls (1)(2)(3) (1-15M Bottom Bar) Table A-18 Forming Part of Sentence (2) Maximum Clear Span, m / ft-in Minimum Lintel Thickness, mm (in) ½ / ¼ / / /8 Minimum Lintel Depth, mm (in) Supporting Light-Frame Roof Only Supporting ICF Second Storey and Light-Frame Roof Maximum Ground Snow Load, kn/m kn/m kn/m kn/m kn/m / / / / / / / / / / / / / / / 2.18 / / / / / 1.67 / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / 1.25 / / / / / / / / / / / / / / / / / / / / / / / / / Notes to Table A-18: (1) Deflection criteria is L/240, where L us the clear span of the lintel. (2) Linear interpolation is permitted between ground snow loads and between lintel depths. (3) 10M stirrups are required at a maximum d/2 spacing for spans greater than 1 200mm (47 ), where d is the distance from the top of the lintel to the level of the bottom reinforcing bar in the lintel.

12 Maximum Allowable Clear Spans for Lintels in Flat Loadbearing Insulating Concrete Form (ICF) Walls (1)(2)(3) (2-15M Bottom Bar) Table A-19 Forming Part of Sentence (2) Maximum Clear Span, m / ft-in Minimum Lintel Thickness, mm (in) ½ / ¼ / / /8 Minimum Lintel Depth, mm (in) Supporting Light-Frame Roof Only Supporting ICF Second Storey and Light-Frame Roof Maximum Ground Snow Load, kn/m kn/m kn/m kn/m kn/m / / / / / / / / / / / / / / 3.25 / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / 3.19 / / / / / / / / / / / / / / / / 3.29 / / / / / / / / / / 3.18 / / / / / 3.15 / / / / / / / / / / / / / / / / 3.08 / / / / / / / / / / / / / / / / Notes to Table A-19: (1) Deflection criteria is L/240, where L us the clear span of the lintel. (2) Linear interpolation is permitted between ground snow loads and between lintel depths. (3) 10M stirrups are required at a maximum d/2 spacing for spans greater than 1 200mm (47 ), where d is the distance from the top of the lintel to the level of the bottom reinforcing bar in the lintel.

13 Maximum Spans for Steel Beams Supporting a Roof and one Floor in Dwelling Units where Beams Support Exterior Stud Walls with Brick Veneer 2.0 kpa Specified Roof Design Snow Load Table A-24 Forming Part of Sentence (1) Maximum Span, Roof Live Load, kpa 2.0 / 6-6 Supported Roof Length, Supported Floor Length, W 150 X W 150 X W 150 X W 200 X W 200 X W 200 X W 200 X W 250 X W 250 X W 250 X W 310 X W 310 X W 310 X W 310 X W 360 X W 360 X W 360 X W 360 X W 360 X Steel Beam Selection

14 Maximum Span, Roof Live Load, kpa 2.0 / 6-6 Supported Roof Length, Supported Floor Length, W 150 X W 150 X W 150 X W 200 X W 200 X W 200 X W 200 X W 250 X W 250 X W 250 X W 310 X W 310 X Steel Beam Selection Minimum Thermal Resistance of Insulation to be Installed Based on Degree-Day Zones (1) Buildings Within the Scope of Part 9 Table Forming Part of Sentence (4) Minimum RSI (R) Value Required Building Element Exposed to the Exterior or Unheated Space Zone 1 Less than 5000 Degree-Days Zone or More Degree-Days Electric Space Heating Zones 1 & 2 Ceiling below attic or roof space 7.00 (40) 7.00 (40) 8.80 (50) Roof assembly without attic or roof space 4.93 (28) 4.93 (28) 4.93 (28) Wall other than foundation wall 3.34 (19) 4.22 (24) 5.10 (29) Foundation walls enclosing heated space 2.11 (12) 2.11 (12) 3.34 (19) Floor, other than slab-on-ground 4.40 (25) 4.40 (25) 4.40 (25) Slab-on-ground containing heating pipes, tubes, ducts or cables 1.76 (10) 1.76 (10) 1.76 (10) Slab-on-ground not containing heating pipes, tubes, ducts or cables 1.41 (8) 1.41 (8) 1.76 (10) Basement floor slabs located more than 600 mm (12 ) below grade Notes to Table : (1) Number of degree-days for individual locations are contained in Supplementary Standards SB-1.

15 Minimum Thermal Resistance of Building Assemblies Based on Degree-Day Zones Buildings of Residential Occupancy Within the Scope of Part 9 Table Forming Part of Sentence (1) Minimum RSI (R) Value Required Building Element Exposed to the Exterior or Unheated Space Zone 1 Less than 5000 Degree- Days Zone or More Degree-Days Electric Space Heating Zones 1 & 2 Ceiling below attic or roof space 7.24 (41) 7.24 (41) 9.00 (51) Roof assembly without attic or roof space 5.21 (30) 5.21 (30) 5.21 (30) Wall other than foundation wall 3.80 (22) 4.67 (27) 5.55 (32) Foundation walls enclosing heated space 0 (14) 0 (14) 3 (21) Floor, other than slab-on-ground 4.70 (27) 4.70 (27) 4.70 (27) Slab-on-ground containing heating pipes, tubes, ducts or cables (1) 2.11 (12) 2.11 (12) 2.11 (12) Slab-on-ground not containing heating pipes, tubes, ducts or cables (1) 1.76 (10) 1.76 (10) 2.11 (12) Basement floor slabs located more than 600 mm (12 ) below grade Notes to Table : (1) RSI (R) value shown for slab-on-ground is for rigid insulation. Minimum Thermal Resistance of Building Assemblies Based on Degree-Day Zones Buildings of Non-Residential Occupancy Table A. Forming Part of Sentence (1) Minimum RSI (R) Value of Assembly (2) Building Assembly Zone 1 Zone or More Degree-Days Less than 500 Degree-Days Opaque wall assembly 2.63 (15) 3.83 (22) Wall assembly adjacent to unconditioned space 1.61 (9) 2.02 (11) Below grade wall (3) 2.11 (12) 2.82 (16) Roof assembly 3.91 (22) 5.68 (32) Floor assembly over unconditioned space 4.52 (25) 4.52 (25) Column Notes to Table A.: (1) The thermal residence determined for the building assembly shall take into account the thermal bridging in the assembly, as determined by Supplementary Standard SB-10. (2) RSI (R) value shown is for insulation only. Minimum Thermal Resistance for Slab-On-Ground Insulation Buildings of Non-residential Occupancy Table B. Forming Part of Sentence (3) Type of Slab-On-Ground Position of Insulation Length of Insulation, mm (in) Unheated Horizontal 600 (24) 3.17 (18) 1200 (48) 1.94 (11) Vertical 600 (24) 1.41 (8) 1200 (48) 0.70 (4) Heated Horizontal 600 (24) 3.52 (20) 1200 (48) 2.29 (13) Vertical 600 (24) 1.76 (10) 1200 (48) 1.06 (6) Notes to Table B.: (1) RSI (R) value shown is for insulation only. Minimum RSI (R) Value Required (1)