wc_tx003253gb_FM10.fm
26
Operation
P 35A
4.8
Operation
Procedure
Perform the procedure below to perform a typical screeding of concrete.
1. Establish wet pads for wet screed guidance. Place wet pads
(a)
in strips no less
than 0.6m (2.0 ft) wide.
Note:
Hand tools such as magnesium floats are used in conjunction with a laser
receiver, transit level, or grade stakes to establish the proper elevation of the pads.
2. Use a float to strike off or build up the level of the fresh concrete to the desired
grade. This is usually marked with an “
X
”
(b)
to signal the screed operator that
grade has been established. A minimum of two areas should be marked per
length of screed blade used to strike the entire pad.
3. Place the blade on the pad and strike-off perpendicular to the strip axis
(c)
. Use
the marked pads as elevation guides.
4. Place concrete between the strips
(d)
and use them as “wet forms” for the rest
of the placement. Strike-off at this point will be parallel to the axis of the initial
wet pads of concrete.
This procedure continues on the next page.
wc_gr07996
a
a
d
c
b
b
