Difference between revisions of "SBS 11.3.2.2-1 Cast Iron Drains"
Difference between revisions of "SBS 11.3.2.2-1 Cast Iron Drains"
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<big><big><big><big><big>SBS | Cast Iron Drain ([[SBS_Roof_Systems_Standard#11.3.3.2._General_Requirements_for_Cast-iron_Roof_Drains | Article 11.3.3.2.]])</big></big></big></big></big> | <big><big><big><big><big>SBS | Cast Iron Drain ([[SBS_Roof_Systems_Standard#11.3.3.2._General_Requirements_for_Cast-iron_Roof_Drains | Article 11.3.3.2.]])</big></big></big></big></big> | ||
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<div class="panel-heading"><big>'''SBS Details'''</big></div> | <div class="panel-heading"><big>'''SBS Details'''</big></div> |
Revision as of 17:42, 27 June 2022
Division D - Construction Details
SBS | Cast Iron Drain ( Article 11.3.3.2.)
Notice to Reader | |
Images used in a Construction Detail are representative and not prescriptive, and are not necessarily drawn to scale. They are intended to support the related Standard (Ref. Division A, Article 2.2.1.2.).
The reader may link to the related Article in the detail title, or link to the Standard as it relates to a specific element in the detail. All hyperlinks are displayed blue text. |
SBS Details
1 WORK INCLUDED
- (1) Supporting Deck Overlay
- If required by design authority.
- (2) Air or Vapour Control Layers
- If required by design authority.
- (3) Insulation
- Mechanically fastened. See available insulation products in the Accepted Materials section of this Manual.
- (4) Insulation Overlay
- Asphalt adhered or mechanically fastened. Two layers required over heat-sensitive insulation.
- (5) Primary Membrane and Membrane Protection
- (6) Mastic
- As approved by manufacturer.
- (7) Base Membrane Flashing
- As approved by membrane manufacturer (See (C) below).
2 RELATED WORK BY OTHERS
- (A) Acceptable Supporting Deck Structure
- (B) Roof Drain Assembly
- (C) Lead Flashing
- Minimum 15 kg / m² (3 lb / ft²) weight lead sheet; flange extending minimum 25 mm (1") into bowl to 150 mm (6") beyond perimeter of drain; embed in mastic (6) and prime top surface where required by manufacturer or minimum 1 m x 1 m (39" x 39") 3 mm thick modified bituminous base sheet; to be supplied by trade supplying roof drain. For optional installation methods that use a membrane flashing in place of lead, see the Application requirements under 11.3.2.2 Cast-iron Roof Drains.
- Leader size is determined by using the calculation found in the BC Building Code at Appendix P.7.4.10 and Section 7.4.10.11 (Section 7.4.10.10 for gutters)(current edition) in conjunction with the 15-minute rainfall value from the National Building Code, Appendix C.
NOTE: See the Standard for additional requirements.
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