MECHANICAL
ANCHORS > BOAX-II Expansion
Anchor
Expansion Anchor
Systems

Economical anchor for medium-duty loads.
Features:
Applications:
-
Steel construction
-
Facades
-
Railing
-
Cable trays
-
Brackets
-
Ladders
Material:
Carbon steel, and A4 stainless steel
Finish:
Zinc plated carbon steel and A4 stainless steel
Base Material:
Cracked and non-cracked concrete: C20/25 to C50/60 (B25 to B55)
Also suitable for high density natural stones (sD ≥ 25 N/mm2)
Approval:
ETA-08/0276 - Option 1: M8-M16, carbon steel, zinc plated
ETA-08/0276 - Option 1: M8-M16, A4 stainless steel
Load Range:
Tension: Nperm = 1.8 - 21.4 [kN]
Shear: Vperm = 1.8 - 22.4 [kN]
Product Range:
BoAX-II: M8 - M16, carbon steel, zinc plated and blue passivated
BoAX-II A4: M8 - M16, A4 stainless steel
BoA-X: M6 + M20, carbon steel, zinc plated and blue passivated
BoA-X A4: M6 + M20, A4 stainless steel
Installation:
Carbon steel, zinc
plated
Throughbolt BOA-X and BOAX-II

Permissible loads for single anchors with no infl uencing edge distances
or spacings. Loads are calculated using partial safety factors from ETAG 001 and the characteristic anchor and
installation data.
Design calculations shall follow the requirements of
ETA-08/0276.

Installed
anchor:

-
The permissible loads have been calculated using the partial safety factors for
resistances stated in the ETA-approval and a partial safety factor for actions of gF = 1.4.
The permissible loads are valid for unreinforced concrete and reinforced concrete with a rebar spacing
s ≥ 15 cm and reinforced concrete with a rebar spacing s ≥ 10 cm if the rebar is 10mm or
smaller.
-
The permissible shear loads are based on a single anchor without infl uencing
concrete edges. For shear loads applied close to an edge (c < 10 hef or < 60 d) concrete edge
failure must be checked per ETAG 001, Annex C, design method A.
-
Concrete is considered non-cracked when the tensile stress within the concrete is
sL + sR ≤ 0. In the absence of detailed verifi cation sR = 3 N/mm2 can be assumed (sL equals the
tensile stress within the concrete as a result of external loads, forces on anchors
included).
-
If spacings or edge distances become smaller than the characteristic values (i.e.
s ≤ scr,N and/or c ≤ ccr,N) a calculation per ETAG 001, Annex C, design method A must be performed.
For details, see ETA-08/0276
-
Not included in the approval ETA-08/0276.
-
Type BoA-X 16/95 is not included in ETA-08/0276. Permissible loads in C20/25 to
C50/60 cracked concrete: Nperm = 6.4 [kN] ; Vperm = 6,4 [kN].
Permissible loads in C20/25 to C50/60 non-cracked concrete: Nperm = 10.0 [kN] ; Vperm = 10.0
[kN].
A4 stainless steel
Throughbolt BOA-X-A4 AND BOAX-II A4

Permissible loads for single anchors with no infl uencing edge distances
or spacings. Loads are calculated using partial safety factors from ETAG 001 and the characteristic anchor and
installation data from this catalogue.
Design calculations shall follow the requirements of
ETA-08/0276.



-
The permissible loads have been calculated using the partial safety factors for
resistances stated in the ETA-approval and a partial safety factor for actions of gF = 1.4.
The permissible loads are valid for unreinforced concrete and reinforced concrete with a rebar spacing
s ≥ 15 cm and reinforced concrete with a rebar spacing s ≥ 10 cm if the rebar is 10mm or
smaller.
-
The permissible shear loads are based on a single anchor without infl uencing
concrete edges. For shear loads applied close to an edge (c < 10 hef or < 60 d) concrete edge
failure must be checked per ETAG 001, Annex C, design method A.
-
Concrete is considered non-cracked when the tensile stress within the concrete is
sL + sR ≤ 0. In the absence of detailed verifi cation sR = 3 N/mm2 can be assumed (sL equals the
tensile stress within the concrete as a result of external loads, forces on anchors
included).
-
If spacings or edge distances become smaller than the characteristic values (i.e.
s ≤ scr,N and/or c ≤ ccr,N) a calculation per ETAG 001, Annex C, design method A must be performed.
For details, see ETA-08/0276.
-
Not included in the approval
ETA-08/0276.
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