User Guide

Plumbing Design Assistance Manual l Chapter 3 – Fire-resistant construction l 19
Wood-frame assemblies (U.S.)
Maximum density
of Uponor ProPEX
EP fittings is 3.33 lbs.
(1.51 kg) per cavity
Maximum density of Uponor PEX pipe
is 4.85 lbs. per linear feet (7.23 kg/m)
of cavity
• Uponor AquaPEX (up to 3")
Restricted load-bearing wood
joist floor/ceiling assembly with
maximum 2" Uponor PEX pipe
Firestop listed to ASTM E814
(must be Uponor PEX pipe c
ompatible)
• 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")
Restricted load-bearing wood
stud and gypsum wall assembly
Optional concrete top pour
Multiport tee detail
Wood-frame floor/ceiling assembly (UL Design No. L557/QAI Design No. P321-1F)
Wood-stud wall assembly (UL Design No. U372/QAI Design No. P321-1B
)
Figure 3-1: Multiport tee detail