Difference between revisions of "SBS Mechanical Equipment Curb"

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Difference between revisions of "SBS Mechanical Equipment Curb"

(Created page with "<hr> File:D1.7.7.jpg === WORK INCLUDED === ;(1) Gypsum Overlay Board: :Required when insulation is too thin to span flutes of steel decking (See <i>RGC Guarantee Standar...")
 
 
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<big><big>Division D - Construction Details</big></big>
 
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<big><big><big><big><big>SBS | Mechanical Equipment Curb ([[SBS_Roof_Systems_Standard#12.3.2.4._Curbs.2C_Sleepers.2C_and_Equipment_Pads | Article 12.3.2.4.]])</big></big></big></big></big>
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<div class="panel panel-success">
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<div class="panel-heading"><big>'''SBS Details'''</big></div>
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[[File:SBS 11.3.3.2.-3B.jpg| link=http://rpm.rcabc.org/images/6/6c/D1.7.6-4%281%29.jpg | class=img-responsive]]
  
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[[File:SBS 11.3.3.2.-3C.jpg| link=http://rpm.rcabc.org/images/d/d3/D1.7.6-4_%282%29.jpg | class=img-responsive]]
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=== WORK INCLUDED ===
 
=== WORK INCLUDED ===
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;(1) Gypsum Overlay Board:
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;(1) [[SBS Roof Systems Standard#PART_5|'''Supporting Deck Overlay''']]: Required when insulation is too thin to span flutes of steel decking or when required as thermal barrier by design authority.
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:Required when insulation is too thin to span flutes of steel decking (See <i>RGC Guarantee Standard A2.5</i>) or when required as thermal barrier by design authority.
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;(2) [[SBS Roof Systems Standard#PART_6|'''Air or Vapour Control Layers''']]: If required by design authority.
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;(2) Vapour Retarder:
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;(3) [[SBS Roof Systems Standard#PART_7|'''Insulation''']]: Mechanically fastened. See available insulation products in the[[Division C| Accepted Materials]] Division of this ''Manual''.
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:If required by design authority.
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;(4) [[SBS Roof Systems Standard#PART_8|'''Insulation Overlay''']]: As required.
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;(3) Insulation:
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;(5) Flame protection (membrane strip): Also refer to the Standard for alternative methods for handling flame-sensitive details and roof perimeters.
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:Mechanically fastened where possible. (See Section 2.2 for accepted materials and Guarantee Standard A4.4).
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;(6) [[SBS Roof Systems Standard#PART_9|'''Base Field Membrane''']]: Adhered to overlay board using asphalt, cold adhesive, self-adhered, mechanical attachment or torch applied according to manufacturer's specification. Torching directly to wood surfaces is not permitted.
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;(4) Insulation Overlay:
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;(7) [[SBS Roof Systems Standard#PART_10|'''Base Membrane Flashing''']]: Adhered according to manufacturer's specifications, using cold adhesive, hot asphalt, self-adhered or torch applied to cover boards, or mechanically attached membrane. Must be tucked under metal flange and mechanically attached to nailing strip.
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:As required. See <i>RGC Guarantee Standard C4.1</i>
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;(8) [[SBS Roof Systems Standard#PART_9|'''Cap Field Membrane''']]: Applied according to manufacturer's printed instructions and to <i>RoofStar Guarantee Standards</i>.
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;(5) Base Sheet:
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;(9) [[SBS Roof Systems Standard#PART_10|'''Cap Membrane Flashing''']]: Applied according to manufacturer's printed instructions and to <i>RoofStar Guarantee Standards</i>. Must be tucked under metal flange and mechanically attached to the nailing strip.
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:Adhered to overlay board using asphalt, cold adhesive, self-adhered, mechanical attachment or torch applied according to manufacturer&#8217;s specification. Torching directly to wood surfaces is not permitted.
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;(10) [[SBS Roof Systems Standard#PART_13|'''Metal Flashing''']]: Mechanically fasten, standing seam at corners. Full width base flashing optional on flexible membranes. Partial skirt flashing minimum 75 mm (3") required on mechanical curbs that require flashing under metal flange.
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;(6) Base Sheet Flashing:
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;(11) [[SBS Roof Systems Standard#PART_13|'''Alternate Corner Cap (Shop-manufactured)''']]: Weld seams.  Bed in two parallel courses of butyl tape or acceptable sealant. Mechanically fasten to outside face of curb flange.
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:Adhered according to manufacturer&#8217;s specifications, using cold adhesive, hot asphalt, self-adhered or torch applied to cover boards, or mechanically attached membrane. Must be tucked under metal flange and mechanically attached to nailing strip. (See <i>RGC Guarantee Standards</i> Section 2.1.1, A5.6, and Section 2.1.3, C8.5).
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;(12) '''Butyl Tape (sealant)'''
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;(7) Cap Sheet:
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;(13) [[SBS Roof Systems Standard#PART_13|'''Fasteners''']]: Flanged fasteners with neoprene washers.
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:Applied according to manufacturer&#8217;s printed instructions and to <i>RGC Guarantee Standards</i>.
 
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;(8) Cap Sheet Flashing:
 
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:Applied according to manufacturer&#8217;s printed instructions and to <i>RGC Guarantee Standards</i>. Must be tucked under metal flange and mechanically attached to the nailing strip.
 
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;(9) Metal Base Flashing:
 
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:Mechanically fasten, standing seam at corners. Full width base flashing optional on flexible membranes. Partial skirt flashing minimum 75 mm (3") required on mechanical curbs that require flashing under metal flange. (See Detail Section 8.3.5).  
 
  
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=== RELATED WORK BY OTHERS ===
 
=== RELATED WORK BY OTHERS ===
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;(A) Acceptable Deck
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;(A) [[SBS Roof Systems Standard#PART_2|'''Supporting Deck Structure''']]
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;(B) Air / Vapour Seal
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;(B) [[SBS Roof Systems Standard#PART_6|'''Air or Vapour Control Layer Seal''']]: Air and vapour controls installed by others should be made accessible to the ''Contractor'' for connection, to maintain continuity across assemblies and throughout the building enclosure.
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;(C) Mechanical Curb:
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;(C) '''Mechanical Curb''': Minimum 200 mm (8") above finished roof surface.
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:Minimum 200 mm (8") and maximum 300 mm (12") above finished roof surface.
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:* Some mechanical curbs are designed to allow membrane flashing to be carried up onto metal flange. Install according to manufacturers&#8217; instructions.
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;(D) Rigid Insulation
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;(D) '''Wood Nailing Board'''
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;(E) '''Neoprene Gasket for RTU'''
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[[File:SBS 11.3.3.2.-3A.jpg| link=http://rpm.rcabc.org/images/d/d3/D1.7.6-4_%282%29.jpg | 450px]]
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;NOTE:  
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'''NOTE''': See the [[SBS Roof Systems Standard | '''Standard''']] for additional requirements.
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* Some mechanical curbs are designed to allow membrane flashing to be carried up onto metal flange. Install according to manufacturers&#8217; instructions.
 
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* Refer to <i>RGC Guarantee Standards</i> for additional requirements
 
  
 
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Latest revision as of 18:19, 27 October 2023



Division D - Construction Details

SBS | Mechanical Equipment Curb ( Article 12.3.2.4.)

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

SBS 11.3.3.2.-3B.jpg

SBS 11.3.3.2.-3C.jpg


1 WORK INCLUDED

(1) Supporting Deck Overlay
Required when insulation is too thin to span flutes of steel decking or when required as thermal barrier 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 Division of this Manual.
(4) Insulation Overlay
As required.
(5) Flame protection (membrane strip)
Also refer to the Standard for alternative methods for handling flame-sensitive details and roof perimeters.
(6) Base Field Membrane
Adhered to overlay board using asphalt, cold adhesive, self-adhered, mechanical attachment or torch applied according to manufacturer's specification. Torching directly to wood surfaces is not permitted.
(7) Base Membrane Flashing
Adhered according to manufacturer's specifications, using cold adhesive, hot asphalt, self-adhered or torch applied to cover boards, or mechanically attached membrane. Must be tucked under metal flange and mechanically attached to nailing strip.
(8) Cap Field Membrane
Applied according to manufacturer's printed instructions and to RoofStar Guarantee Standards.
(9) Cap Membrane Flashing
Applied according to manufacturer's printed instructions and to RoofStar Guarantee Standards. Must be tucked under metal flange and mechanically attached to the nailing strip.
(10) Metal Flashing
Mechanically fasten, standing seam at corners. Full width base flashing optional on flexible membranes. Partial skirt flashing minimum 75 mm (3") required on mechanical curbs that require flashing under metal flange.
(11) Alternate Corner Cap (Shop-manufactured)
Weld seams. Bed in two parallel courses of butyl tape or acceptable sealant. Mechanically fasten to outside face of curb flange.
(12) Butyl Tape (sealant)
(13) Fasteners
Flanged fasteners with neoprene washers.

2 RELATED WORK BY OTHERS

(A) Supporting Deck Structure
(B) Air or Vapour Control Layer Seal
Air and vapour controls installed by others should be made accessible to the Contractor for connection, to maintain continuity across assemblies and throughout the building enclosure.
(C) Mechanical Curb
Minimum 200 mm (8") above finished roof surface.
  • Some mechanical curbs are designed to allow membrane flashing to be carried up onto metal flange. Install according to manufacturers’ instructions.
(D) Wood Nailing Board
(E) Neoprene Gasket for RTU

SBS 11.3.3.2.-3A.jpg

NOTE: See the Standard for additional requirements.

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