User Guide

Plumbing Design Assistance Manual l Chapter 3 – Fire-resistant construction l 23
Non load-bearing steel stud
and gypsum wall assembly
Uponor EP or metal drop-ear
bend support, supported elbow
or tee, or copper stub ell
Firestop listed to ASTM E814
requirements (must be Uponor
AquaPEX compatible); firestop
required in ANSI/UL 263 wall
Steel back plate (typical)
ANSI/UL 263 slab listed with
Uponor AquaPEX pipe only
(ANSI/UL Design No. K913)
A
pproved bend support
½" or ¾" Uponor AquaPEX pipe
(25 FS/50 SD)
Fixture detail
Concrete floor/ceiling assembly (UL Design No. K913/QAI Design No. P321-1D)
Steel-stud wall assembly (UL Design No. V444/QAI Design No. P321-1A)
Non
load-bearing steel stud
and gypsum wall assembly
Maximum density of Uponor PEX
pipe is 4.85 lbs per linear feet
(7.23 kg/m) of cavity
Restricted load-bearing
floor/ceiling assembly with
maximum 2" Uponor PEX pipe
Firestop listed to ASTM E814 (must
be Uponor PEX pipe compatible)
Maximum density of Uponor PEX pipe
is 14 cubic inches per 1 cubic foot of
concrete (with or without sleeving)
Maximum density of
Uponor ProPEX EP fittings
is 3.33 lbs. (1.51 kg) per cavity
Multiport tee detail
Concrete floor/ceiling assembly (UL Design No. K913/QAI Design No. P321-1D)
Steel-stud wall assembly (UL Design No. V444/QAI Design No. P321-1A)
• Uponor AquaPEX (up to 3"
)
• Wirsbo hePEX (up to 4")
• Pre-insulated Uponor AquaPEX
(up to 2" pipe with 2" thick insulation)
• Pre-insulated Wirsbo hePEX
(up to 2" pipe with 2" thick insulation)
• Uponor AquaPEX Reclaimed
Water (up to 2")
Concrete assemblies (U.S.)
Figure 3-7: Multiport tee detail
Figure 3-8: Fixture detail