User Guide

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Steel/concrete
wall assemblies
Steel/concrete wall assemblies
complying with ASTM E119
and CAN/ULC-S101 have the
following requirements.
Building elements
Studs: 3⅝" steel studs spaced
maximum 24" o.c.
• Gypsum wallboard: Minimum
one layer of ⅝" thick Type X
gypsum wallboard
Pipe and ttings
• Pipe: Maximum density of
Uponor PEX pipe is 4.85 lbs.
per linear feet (7.23 kg/m)
of cavity. Approved Uponor
PEX pipes include:
- Uponor AquaPEX White
(up to 3")
- Uponor AquaPEX Red
(up to 1")
- Uponor AquaPEX Blue
(up to 1")
- Uponor AquaPEX
Reclaimed Water (up to 2")
- Pre-insulated Uponor
AquaPEX (up to 2" pipe
with 2" thick insulation)
- Pre-insulated Wirsbo
hePEX (up to 2" pipe with
2" thick insulation)
- Wirsbo hePEX (up to 4")
• Fittings: Maximum density of
Uponor ProPEX brass or EP
ttings is 3.33 lbs. (1.51 kg)
per stud cavity.
Note: See assembly details
for more information.
Assembly numbers
QAI Design No. P321-1A
• 1-hour
• Up to 4" PEX
QAI Design No. P321-1G
• 2-hour
• Up to 4" PEX
UL Design No. V444
• 1-hour
• Up to 4" PEX
Note: Maximum size is
available through QAI.
Steel/concrete oor/
ceiling assemblies
Steel/concrete oor/ceiling
assemblies complying
with ASTM E119 or CAN/
ULC-S101 have the following
requirements.
Building elements
• Concrete oor: Minimum slab
thickness of 6½"
• Steel reinforcement: Various
sized Grade 40 or 60 steel
bars located as required by
ACI-318
• Steel joists: Minimum
nominal depth of 10" spaced
maximum of 6'-0" o.c.
• Steel oor: Minimum 1½"
depth, 22 gauge uncoated or
galvanized uted
Pipe and ttings
• Pipe: Maximum volume of
Uponor PEX pipe is 14 cubic
inches per 1 cubic foot (8101
cubic centimeters per 1 cubic
meter). Approved Uponor
PEX pipes include:
• Uponor AquaPEX White
(up to 2")
• Uponor AquaPEX Red
(up to 1")
• Uponor AquaPEX Blue
(up to 1")
• Uponor AquaPEX Reclaimed
Water (up to 2")
• Pre-insulated Uponor
AquaPEX (up to 2" pipe with
2" thick insulation)
• Pre-insulated Wirsbo hePEX
(up to 2" pipe with 2" thick
insulation)
• Wirsbo hePEX (up to 2")
Note: See assembly details
for more information.
Assembly numbers
ITS Design No. UW/FCA
120-01
• 1-hour
• Up to 2" PEX
ITS Design No. UW/FCA
120-02
• 2-hour
• Up to 2" PEX
QAI Design No. P321-1C
• 2-hour
• Up to 2" PEX
QAI Design No. P321-1D
• 2-hour
• Up to 2" PEX
QAI Design No. P321-1E
• 2-hour
• Up to 2" PEX
UL Design No. K913
• 2-hour
• Up to 2" PEX
UL Design No. G524
• 2-hour
• Up to 2" PEX
UL Design No. G573
• 2-hour
• Up to 2" PEX