Watts Dead Level Series Mode d’emploi

Instructions for Installing

Dead Level® Trench Drains

For Pre-Sloped Trench Drains

IS-WD-DL-Installation-USA

WARNING

Read this Manual BEFORE using this equipment.

Failure to read and follow all safety and use information

can result in death, serious personal injury, property

damage, or damage to the equipment.

Keep this Manual for future reference.

General Note: Please DO NOT separate channels from frames.

Channel and frame sections arrive to the jobsite preassembled in a speciﬁc

sequence to meet your project design requirements. They are not interchangeable

between sections and separating and reassembling them may cause installation

errors. If they accidentally become separated, please contact your Watts representative for technical

support with any questions.

1. Installation Diagram

1.1 Locate and save the installation diagram from the hardware box.

If you cannot ﬁnd your installation diagram contact your Watts

representative for another copy.

2. Excavation

2.1 Excavate to allow a minimum 4" concrete pour below, and on both sides of

the trench drain and below a catch basin, if used.

Installation Guidelines

FIG. A

3.5 Turn the catch basin over and set to appropriate line and grade per the

construction plans.

3.6 If a catch basin is not used, pipe connections are made to the bottom of the

channel, or to an end cap. Drill through the molded pipe hub with a 4" hole

saw or reciprocating saw, taking care not to rake the inside wall of the hub.

Make No Hub pipe connections with a suitable coupling (by others).

4. Layout

4.1 Refer to the installation diagram.

4.2 Working from the deepest outlet connection(s) back upstream, lay the trench

drain sections alongside the open trench per the labels on each section and

the installation diagram.

4.3 Each channel and frame section is also marked with arrows, indicating the

direction of ﬂow. Conﬁrm they are all pointing per the ﬂow shown on the

installation diagram.

5. Rebar Anchoring & Leveling of Sections

5.1 Establish accurate line and grade reference and control using your preferred

method-e.g. string line, laser level, etc.

5.2 Starting from the outlet or catch basin, set the ﬁrst structural frame and channel

section shown on the installation diagram on the desired control line along the

excavated trench.

3. Catch Basins & Piping Connections

3.1 Catch basins, if used, should be set ﬁrst. If no catch basin is used

skip to step 3.6.

3.2 Using a reciprocating or hole saw, remove the circular pipe connection cutout(s)

where the basin will connect to discharge piping.

3.3 Invert the catch basin on a ﬂat surface, and butt the section(s) shown on the

installation drawing against the pattern on the basin. Use a reciprocating saw

to remove the cutout on the basin.

3.4 With the cutout correctly removed, the channel tongue should slide inside the

hole in the basin, with the channel ﬂange ﬂush against basin's exterior wall (Fig. A).

5.5 Repeat steps 5.2 through 5.4 with the next section(s) shown on the installation

diagram until run is complete.

6. Connecting Sections

6.1 Conﬁrm that all sections are in the order shown on the installation diagram, are

aligned with ﬂow arrows pointing towards the outlet, and are on the desired

line and grade.

6.2 Connect channels and end caps through the top and bottom holes of ﬂanges using 1" self-

tapping hex bolts (Fig. C).

6.3 Using frame connectors F-L, join the frames from the top using 3/8" hex bolt

(Fig. D).

6.4 Dead Level systems come with 1" channel convenience spacers to provide

ﬂexibility for ﬁne tuning to the job site conditions. These are intended to be

used as needed between any connection at the discretion of the installing

contractor. For every 20' of trench drain, 1 spacer and corresponding #10

are included.

6.5 It is usually unnecessary to seal channel joints in on-grade installations. If

corrosive solutions are present, or sealed joints are otherwise desired, use a

small bead of silicone caulk to seal joints.

FIG. B

FRAME

1/4-20x3/8" Hex Bolt

1/2" #4 REBAR

1/4" x 1" Self-Tapping Hex Bolts

FIG. C FIG. D

F-L

3/8" Hex Bolt

5.3 Drive a minimum of 4 pieces 1/2" #4 rebar through the frame ears to support

each frame section. The rebar should reach a depth sufﬁcient to provide

stability for the system, and prevent ﬂoating during the concrete pour. Threaded

steel rod may be substituted for rebar at the installers discretion.

5.4 Level the system at the desired grade by sliding the frame ears along the rebar.

Secure the frame to the rebar using 3/8" hex bolts (Fig. B).

6A Connecting Center Sections

6A.1 Layout sections as shown below.

6A.2 Cut the CA-M adapter to ﬁt the bottom depth of the channel section.

6A.3 Cut the top section of the CA-M to ﬁt the depth of the top of the channels.

CA-M

After Cutting

to Depth of

Channel

CA-M

Cut to Fit

Depth of

Channel

Top Section of

CA-M

Cut to Fit

Depth of Top

Section of

Channel

Top Section of

CA-M

After Cutting to

Depth of Top of

Channel

*Note: The CA-M is equipped with distinct grooves for ease in cutting to the correct size.

Top of CA-M w/Grooves for Cutting

Sides of CA-M w/Grooves for Cutting

The CA-M will allow the two male sections to ﬁt together securely.

Use 4-6 #10-24 bolts and nuts to ﬁt the two channel

sections together securely

Dead Level Channel Male End View

6A.4 Fit the two male channel sections together using the CA-M.

6A.5 Use 4-6 #10-24 bolts and nuts to hold the two channel sections securely in place.

6B. Spacers

6B.1 Dead Level systems are shipped with a CA-F 3/4" spacer. These spacers are provided for

ﬁlling in on long runs when heat can cause shrinkage in the channel connections. They

will ﬁt both male and female ends.

6B.2 The CA-F is equipped with indentations for cutting to ﬁt the top of the channel.

6B.3 One is provided for optional use every 20 feet, on 6" and on 12" ductile iron frames.

CA-F

Optional for use at 20 ft.

intervals. Attaches with 4

self-tapping screws

Lines of indentations for

cutting easily to ﬁt the

top of the channel.

Holes for attaching to

channels.

Dead Level Channel Retention Clip

6C. Channel Retention Clips

6C.1 Dead Level Channel Retention Clips are provided for attaching the channels to the rebar.

6C.2 The channel retention clips provide stability in keeping the channel held tightly in place

while waiting for concrete to be poured.

6C.3 The channel retention clips are for optional use but provided for your convenience and .

ease in installation.

Channel Retention

Clips attach to rebar

and frame for stability.

The Clip On 12" DI Frame

Engages The Channel Against

The Top Lip

The Clip on 6" Poly Frame Engages

The Channel Against the Side

Underneath the Lip

The Clip on 6" DI Frame Engages

The Channel Against the Side

Underneath The Lip

STANDARD SECTION

End Cap

Standard Section

End Cap

Standard Section

Corner & Tee Section End Cap

Standard Section

7. Corners/Tees

7.1 If the system layout requires Corner/Tee Sections, follow the general installation guidelines.

7.2 Invert the Corner/Tee section on a ﬂat surface, and use a reciprocating saw

to remove the appropriate cutout(s) on the section. (Be sure to note whether

the connecting channel(s) have a tongue or groove connection prior to

cutting the Corner/Tee, and remove a cutout with an opposite connection

type than the connecting channel).

7.3 With the cutout correctly removed, the tongue should slide inside the mating

groove, and the ﬂanges should sit ﬂush against each other (Fig. J).

FIG. J

8. Grate Installation

8.1 Grates should always be installed prior to the concrete pour. If used, install

Frame Guards prior to setting the grates (Fig. E).

7.4 Secure the channels and frames with the appropriate hardware (see 6.

Connection Sections)

Note: Dead Level corners or tees can also be formed with a Catch Basin (See

"Catch Basins & Piping Connections"), or underground piping. To pipe under-

ground terminate the trench drains a short distance from the corner joint. Attach

the appropriate endcaps, then connect the endcaps with 4" Sch 40 90's, tees,

and piping as required (Fig. J).

FIG. J

Frame Guards

(Optional)

Channel & Frame

FIG. E

8.2 Install grates along the length of the trench, and secure with hex head or countersunk lock

bolts provided (Fig. F).

8.3 Position Construction Covers over the grates, with the ﬂange between the grate

and frame (Fig. G).

Grates

Lockdown

FIG. F

Construction Cover

FIG. G

9. Concrete Pour

9.1 Check the entire trench system for proper anchoring, alignment, and leveling,

and connections prior to pouring concrete. (Although the Dead Level frame-

anchored design dramatically reduces the risk of ﬂoating, a poorly anchored

system can shift during the pour).

9.2 Check the excavation to be sure a minimum of 4" of concrete can be poured

under, and on all sides of the channels.

9.3 Begin the concrete pour, vibrating the concrete adequately as it is placed, to

ensure complete ﬁlling of all potential voids around the trench.

9.4 The edge of the trench frame should be approx. 1/16" BELOW the top of the

concrete after ﬁnish troweling in order to keep the frame at or below grade

after the concrete is fully cured.

10. Final Inspection

10.1 After the concrete is dry, remove the construction covers, and retighten the

grate lockdowns. (If construction covers will not pry out easily, cut the cover,

and loosen the grate lockdown to free the sides of the cover).

10.2 Replace the covers to protect the installation during the rest of construction if

appropriate.

11. Alternative Installations: Retro-Fit or Suspended

11.1 Cut the existing slab or form a cavity which will enable a 4" concrete pour

below and around the Dead Level system.

11.2 Cut 2x4's at least 30" in length to span the cavity, and align 2x4's with the

cross bars in the trench frame. Drill 1/2" holes to secure the 2x4's to the

frame cross bars, using 3/8"-16x4-1/2" (minimum) bolts and washers

(Fig. J).

11.3 Insert a thin shim between 2x4's and the frame to ensure the trench

will sit slightly below ﬁnished grade after the pour.

11.4 Securely anchor the 2x4's to grade to prevent ﬂoating.

11.5 Once the concrete is initially set, remove 2x4's and complete unﬁnished

areas with concrete.

11.6 Install the grates & lockdowns.

FIG. J

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