ETA130266 HB ERSF CE Rebar - ETA-Danmark

Page 8 of 25 pages of European Technical Approval no. ETA-13/0266
acc. to EN 1992-1-1, Table 8.2
α6 = 1,0 ≤ α6 ≤ 1,5 influence of percentage of lapped
bars relative to the total cross-section area acc.
to EN 1992-1-1, Table 8.3
with:
lb,rqd = according to clause 4.3.2.
l0,min = minimum lap length acc. to EN 1992-1-1,
equation 8.11 modified with TR 023, § 4.2
l0,min = 1,5 · max {0,3 α6 lb,rqd; 15 Ø; 200 mm}
The maximum anchorage depth is given in Annex 3,
Table 1.
4.3.5 Embedment depth for overlap joints
For the calculation of the effective embedment depth of
overlap joints (see annex 4) the concrete cover at endface
of bonded-in rebar c1 shall be considered:
lv ≥ l0 + c1
where:
l0 = required lap length acc. to clause 4.3.4 and EN
1992-1-1
c1 = concrete cover at end-face of bonded-in rebar
If the clear distance between overlapping rebars is
greater than 4 Ø the overlap length shall be enlarged by
the difference between the clear distance and 4 Ø.
4.3.6 Concrete cover
The concrete cover required for bonded-in rebars is
shown in Annex 4.
Furthermore the minimum concrete cover given in EN
1992-1-1, clause 4.4.1.2 shall be observed.
4.3.7 Transverse reinforcement
The requirements of transverse reinforcement in the area
of the post-installed rebar connection shall comply with
EN 1992-1-1, clause 8.7.4.
4.3.8 Connection joint
The transfer of shear forces between new concrete and
existing structure shall be designed according to EN
1992-1-1. The joints for concreting shall be roughened
to at least such an extent that aggregate protrude.
In the case of carbonated surface of the existing concrete
structure the carbonated layer shall be removed in the
area of the post-installed rebar connection with a
diameter of Ø + 60 mm prior to the installation of the
new rebar.
The depth of concrete to be removed shall correspond to
at least the minimum concrete cover for the respective
environmental conditions in accordance with EN 1992-
1-1.
The foregoing may be neglected if building components
are new and not carbonated and if building components
are in dry conditions.
4.4 Installation
The fitness for use of the post-installed rebar can only be
assumed if the anchor is installed as follows:
- installation of the post-installed rebars shall be
carried out by appropriately qualified personnel and
under the supervision of the person responsible for
technical matters on the site;
- use of the injection system only as supplied by the
manufacturer without exchanging the components
of an anchor;
- installation in accordance with the manufacturer's
specifications and drawings prepared for that
purpose and using the tools indicated in the
technical documentation of this ETA;
- checks before rebar installation to ensure that the
strength class of the concrete in which the anchor is
to be placed is in the range given and is not lower
than that of the concrete to which the characteristic
loads apply;
- check of concrete being well compacted, e.g.
without significant voids;
- check the position of existing rebars
- keeping the anchorage depth as specified in the
design drawings
- keeping of the edge distance and spacing as
specified in the design drawings,
- positioning of the drill holes without damaging the
reinforcement,
- in case of aborted drill hole: the drill hole shall be
filled with mortar,
- The drilling and cleaning of the hole and the
installation shall be performed only with the
equipment as specified by the manufacturer given
in annexes 3 to 14. It shall be ensured that this
equipment is available on site and is used
- component installation temperature shall be at least
+5°C,
- during installation and curing of the injection
mortar the temperature of the concrete must not fall
below 0°C, and no more than +30°C, observing the
curing time given in Annex 5
4.4.1 Responsibility of the manufacturer
It is the manufacturer's responsibility to ensure that the
information on the specific conditions according to 1
and 2 including Annexes referred to in 4.2.1. and 4.2.2.
is given to those who are concerned. This information