Page 17 of European Technical Approval ETA-11/0390, issued on 27.08.2012
English translation prepared by CSTB
of the European
Technical Approval
ETA - 11/0390
Injection System Hilti HIT-CT 1 for rebar connection
Figure 12:
General design rules for the Hilti tension anchor HZA-R
1)
If the clear distance between spliced bars exceeds 4d
s
, then the lap length shall be increased by the difference between
the clear bar distance and 4d
s
.
The following applies to Figure 12:
With the tension anchor HZA-R, only tensile forces in the direction of the bar axis
may be transmitted.
v
or
0
are in accordance with section 4.3.2 of the approval
The provision of sufficient transverse reinforcement according to section 4.3.2.6 of this
approval must be verified.
c
concrete cover of bonded-in bar
c
1
concrete cover at end-face of bonded-in bar
min c
minimum concrete cover acc.
Annex 8 of this approval
d
s
diameter of bonded-in bar
0
lap length
v
effective embedment depth
e
Length of the smooth shaft;
e
≥ 100 mm
e,ges
Embedment depth
d
0
nominal drill bit diameter, see Table 7 to Table 9
Annex 7
General design rules of construction,
spacing and edge distance
for Hilti tension anchor HZA-R
≥ 5 d
s
≥ 50mm
d
0
c
1
≤ 4 d
s
)
c
min c
12mm ≤ d
s
≤ 20mm
N
N
0
=
v
e
e, ges
Member edge
Bonded-in tension
anchor
