Watts Dead LevelP - Manual (Page 2)

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S-WD-DeadLevelFAQ 1406 © 2014 Watts
A Watts Water Technologies Company
Dead Level ™ Trench Drains
How many feet should I run
before adding an outlet?
An outlet every 100' (30m) is sufficient in most applica-
tions. If there are specific concerns over flow rate or
volume, consult the Dead Level ™ Flow Rate Chart.
Does my system have to be
sloped? Can I use all neutral
channels?
Neutral trench runs are frequently installed where the
ground is already pitched, or where depth constraints
restrict the use of deeper channel sections.
If I use neutral channels, will
there be drainage problems?
Unless there are specific flow velocity requirements (ex.
airport runways), neutral channels will not significantly
affect drainage. Even a system comprised of all neutral
channels, on a level grade, will drain to the outlet. However, flow
through a sloped system does help flush debris, and keep the chan-
nels clean.
Is Dead Level ™ available 12"
(305mm) wide, or with curved
sections?
New 12" wide Dead Level ™ DX is now available. We
do not make curved sections or “sport track”.
What’s the difference between
polypropylene (PP) and high-density
polyethylene (HDPE) channels?
PP & HDPE are similar compounds, which can be free-
ly interchanged in all common trench drain applica-
tions. If high concentrations of chemical substances
are anticipated, specific PP & HDPE chemical resistance charts
should be referenced.
Can I comply with an H20 Load
Rating?
Yes, specify Dead Level TM D with Ductile Iron Grates.
What is the maximum temperature
of water that can be discharged
into the system?
Water up to 212°F (100°C) has a negligible effect on
polypropylene channels.
How much time and labor should
I figure for installation?
A two-man crew with rebar driver and laser level can
easily set 100' (30m) in a day.
How much field cutting is
required?
Cutting is required only to open outlets, trim end caps,
and make catch basin or tee connections. Standard
Dead Level ™ sections are 4' (122cm) , but odd runs are
accommodated with 1', 2', and 3' (30, 61 and 91cm) sections.
For specifications in increments of less than 1' (30cm), the run
can almost always be extended or shortened to the nearest foot.
How much concrete is required
around the drain? Can I install
Dead Level ™ in asphalt, or anything other
than concrete?
Concrete should be poured minimum 4" (102mm)
around the entire trench system. Dead Level ™ should
not be installed in anything other than concrete.
What size rebar do I need?
#4 rebar - 1 /
2
" (13mm) diameter.
Should I install the grates before
the pour?
Grates should be installed before the pour.
Construction covers supplied with Dead Level ™ pro-
tect the grates, and keep debris from entering the
channels.
Do I have to seal the channel
joints?
Channel joints are not sealed in most applications.
If there is a special requirement, joints can be sealed
with a bead of silicone caulk.
How do I remove the
outlet and catch basin cutouts?
Outlet cutouts can be removed with a 4" (102mm) or
6" (152mm) hole saw, or with a reciprocating saw.
Use a reciprocating saw for catch basin cutouts.
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