User Guide
Plumbing Design Assistance Manual l Chapter 5 – System design and layout l 51
Chapter 5:
System design and layout
This section proles potable-
water design and layout
techniques that are primarily
found in multi-family and
commercial buildings,
generally referred to as
re-resistant construction
buildings, where both plumbing
and building codes apply.
The Uponor advantage
Designing a building’s
domestic-water system with
Uponor AquaPEX piping and
ProPEX ttings delivers a
system with many advantages:
reliability, cost-effectiveness
and code-compliance from a
system that meets peak ow
demands while conserving
water and energy.
Utilizing the smaller inside
diameter of SDR9 Uponor
PEX piping allows decreased
system volume, therefore
providing hot water to xtures
in a shorter amount of time
while still meeting end-use
xture requirements. The
superior qualities of Uponor
PEX deliver a lifetime of
corrosion-free system
performance.
Designing with multiport tees
and small-dimension (½"
to 1") coiled piping reduces
the number of behind-the-
wall connections in a unit
application by 70 percent.
Fewer connections mean
faster installation times and
fewer potential leak points.
Additional features such as a
resistance to freeze damage,
heat-kink repairability, stable
material cost, superior thermal
and acoustical properties, and
a 25-year limited warranty
give the designer additional
condence in choosing an
Uponor AquaPEX plumbing
system.
Unit/In-suite piping
Uponor AquaPEX pipe for
distributing water to xtures
may be installed overhead,
through framing, in slab or
below grade. Common design
methods for unit piping in
multi-family commercial
buildings include:
• Trunk and branch
• Home run
• Uponor Logic
Figure 5-1: Uponor PEX-a Pipe Support
Figure 5-2: In-wall piping