Hilti HY-150 MAX Mode D'emploi page 14

European technical assessment ETA-0 8 / 0 2 0 2
English translation prepared by CSTB
Table B2: Minimum concrete cover c
drilling method and drilling tolerance
Drilling method
Hammer drilling
(HD) and
hammer drilling
with Hilti Hollow
Drill Bit TE-CD,
TE-YD (HDB)
Compressed air
drilling (CA)
1)
See Annex B2, Figure B1.
Comments: The minimum concrete cover acc. EN 1992-1-1.
Injection system Hilti HIT-HY 150 MAX
Product description
Minimum concrete cover c
Bar diameter
[mm]
Without drilling aid
ϕ < 25
30 + 0,06 · l
ϕ ≥ 25
40 + 0,06 · l
ϕ < 25
50 + 0,08 · l
ϕ ≥ 25
60 + 0,08 · l
min
1)
of the post-installed rebar depending on
min
Minimum concrete cover c
With drilling aid
≥ 2 · ϕ
30 + 0,02 · l
v
≥ 2 · ϕ
40 + 0,02 · l
v
50 + 0,02 · l
v
≥ 2 · ϕ
60 + 0,02 · l
v
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1)
[mm]
min
≥ 2 · ϕ
v
≥ 2 · ϕ
v
v
≥ 2 · ϕ
v
Annex B5