Hardy Floor Scales - Manual (Page 38)

Hardy Floor Scales
29
FIG. 24 EXCAVATED PIT AND SUPPORT FOR
THE PIT FRAME
Step 5. Set the frame in the hole supported at
about the correct height.
Step 6. Set two 2 x 4 's on edge (longer than the
width of the hole) across the opening. (See
Fig. 7)
Step 7. Use soft wire and make 2 loops by twist-
ing wire around each 2 x 4 and the frame
Step 8. With the frame supported by the wire and
2 x 4's, use a spirit level to set the frame
flush with the surrounding floor, level the
frame to within 1/8”, corner to corner, side
to side and diagonally, and at the correct
height by twisting or untwisting the wires.
(See Fig. 7)
Step 9. Concrete specifications:
• At least 6” thickness of concrete is required
for pit floor in Non-Hostile applications.
• At least an 11” concrete floor with a mini-
mum of 3” bottom slope is required if drain-
age is required for hostile applications. A 4”
drain is highly recommended.
• Make sure the conduit for the scale cable is
in place and secured into the frame opening.
• Pour the concrete around and under the
frame ensuring a smooth and level finish. It
is recommended that f = 3500 psi and 3” to
4” slump concrete be used.
• If a drain is required, form the pit to place a
slope in the pit floor to the drain. (See Fig.
23)
Frame Assembly
2 x 4
Wire
Pit