Anchoring – installation of the anchor extension
Fig. 30.1
Fig. 30.2
Fig. 30.3
Fig. 30.4
Fig. 30.5
Step 1: After pouring, remove
the planing cap (Fig. 30.1).
Step 2: The coupling nut can
now be screwed fully onto the
tie rod (Fig. 30.2)
Step 3: The extension tie rod DW
is screwed into the coupling nut
and can thus be used to anchor
the support frame (Figures 30.3
to 30.4). Refer to Table 30.6
for the minimum length of the
extension tie rod DW.
Step 4: When the support frame
is no longer in use, the extension
tie rod and the coupling nut
are screwed out. Depending
on the installation version, the
recoverable tie rod can now be
removed. We recommend using
an adjustable spanner to screw
out the tie rod.
Step 5: The opening in the
steel-reinforced concrete slab is
then plugged, taking corrosion
protection requirements into
account. (Fig. 30.5).
If a planing cap is not used when
anchoring, only steps 2 to 4 are
performed (see also page STB-
21).
Planing cap
Coupling nut
Tie rod DW
as extension
Support
frame
Description
Ref. No.
Coupling nut 15 ...................
29-900-55
Coupling nut 20 ...................
29-900-50
Coupling nut 26.5 ................
29-900-56
Tie rod DW 15/90 .................
29-900-80
Tie rod DW 20/ per RM .........
29-900-98
Tie rod DW 26.5/80 ..............
29-900-75
Adjustable spanner ...............
29-926-95
Plugged opening
Minimum length of
extension tie rod
(in cm)
M cross
stiffener 44
Twin channel
80/12
Twin channel
80/22 and
245/22
STB 300
57
59
-
STB 300 plus
88
90
100
STB 450
-
88
98
Table 30.6
STB-30
Technical Instruction Manual / Status November 2019
STB
Support frame
