Uncracked Concrete |
Hammer drilling with carbide-tipped drill bit |
Dry concrete
Water-filled holes
|
Water-saturated concrete
Submerged ( underwater )
|
Cracked concrete |
Hilti TE-CD or TE-YD hollow drill bit and Hilti VC vacuum
Diamond core drill bit with Hilti TE-YRT roughening tool
|
Dry concrete |
Water-saturated concrete |
Uncracked concrete |
Diamond core drill bit |
Dry concrete |
Water-saturated concrete |
Minimum |
h ef , min |
in .
( mm )
|
2-3 / 8
( 60 )
|
2-3 / 4
( 70 )
|
3-1 / 8
( 79 )
|
3-1 / 2
( 89 )
|
15
( 381 )
|
3-1 / 2
( 89 )
|
17-1 / 2
( 445 )
|
4
( 102 )
|
20
( 508 )
|
4-1 / 2
( 114 )
|
5
( 127 )
|
5-1 / 2
( 140 )
|
Maximum 2 |
h ef , max |
in .
( mm )
|
22-1 / 2
( 572 )
|
30
( 762 )
|
37-1 / 2
( 953 )
|
15
( 381 )
|
45
( 1143 )
|
17-1 / 2
( 445 )
|
52-1 / 2
( 1334 )
|
20
( 508 )
|
60
( 1524 )
|
67-1 / 2
( 1715 )
|
75
( 1905 )
|
82-1 / 2
( 2096 )
|
Nominal bit diameter |
d o |
in . |
9 / 16 |
3 / 4 |
1 |
1-1 / 4 |
1-1 / 2 |
|
Effective |
Minimum |
h ef , min |
mm |
70 |
80 |
90 |
101 |
120 |
embedment |
Maximum 2 |
h ef , max |
mm |
678 |
960 |
1170 |
1512 |
1794 |
Minimum concrete member thickness |
h min |
mm |
h ef
+ 30
|
h ef
+ 2d o
|