Table 51 — Hilti HIT-ICE design information with Hilti HIS-N and HIS-RN internally threaded inserts in hammer drilled holes in accordance with CSA A23.3 Annex D 1
Design parameter Symbol Units
Nominal bolt / cap screw diameter ( in .)
3 / 8 1 / 2 5 / 8 3 / 4 A23.3-14 HIS insert outside diameter D mm 16.5 20.5 25.4 27.6 Effective embedment 2 h ef mm 110 125 170 205
Minimum concrete thickness 2 h min mm 150 170 230 270
Ref
Critical edge distance c min mm
Minimum edge distance s min mm 83 102 127 140
Minimum anchor spacing s min mm 83 102 127 140
Coeff . for factored concrete breakout resistance , uncracked concrete 3 k c , uncr – 10 D . 6.2.2
Coeff . for factored concrete breakout resistance , cracked concrete 3 k c , cr – 7 D . 6.2.2
Concrete material resistance factor ф c – 0.65 8.4.2
Resistance modification factor for tension and shear , concrete failure modes , Condition B 4 R conc
– 1.00 D . 5.3 ( c )
Temp . range A 5 psi 350 30 Characteristic bond stress in cracked concrete 6 τ cr
( MPa ) ( 2.4 ) ( 0.2 ) n / a n / a D . 6.5.2 psi 830 855 840 830
Characteristic bond stress in uncracked concrete 6 τ uncr ( MPa ) ( 5.7 ) ( 5.9 ) ( 5.8 ) ( 5.7 )
Reduction for seismic tension α N , seis
– n / a
Permissible installation conditions
Resistance modification factor tension & shear , bond failure dry concrete
Resistance modification factor tension & shear , bond failure water-saturated concrete
Anchor category
– 2 1 1 1
R dry
– 0.85 1.00 1.00 1.00
Anchor category
– 2 1 1 1
R ws
– 0.85 1.00 1.00 1.00
1 Design information in this table is based on testing in accordance with ACI 355.4 . 2 See figure 7 of this section . 3 Minimum edge distance may be reduced to 44mm < c min
< 5d provided T inst is reduced .
4 For all design cases , ψ c , N = 1.0 . The appropriate coefficient for breakout resistance for cracked concrete ( k c , cr
) or uncracked concrete ( k c , uncr
) must be used .
5 Values provided for post-installed anchors under Condition B without supplementary reinforcement as defined in ACI 318 17.3.3 . For cases where the presence of supplementary reinforcement can be verified , the reduction factors associated with Condition A may be used .
6 Temperature range A : Max . short term temperature = 130 ° F ( 55 ° C ), max . long term temperature = 110 ° F ( 43 ° C ).
Short term elevated concrete temperatures are those that occur over brief intervals , e . g ., as a result of diurnal cycling . Long term concrete temperatures are roughly constant over significant periods of time .
7 Bond strength values corresponding to concrete compressive strength f ' c = 2,500 psi ( 17.2 MPa ). For concrete compressive strength , f ' c
, between 2,500 psi
( 17.2 MPa ) and 8,000 psi ( 55.2 MPa ), the tabulated characteristic bond strength may be increased by a factor of ( f ' c / 2,500 ) 0 . 1 [ for SI : ( f ' c
/ 17.2 ) 0 . 1 ].
D . 6.5.2
D . 5.3 ( c )
D . 5.3 ( c )
228 Anchor Fastening Technical Guide Edition 22 | 3.0 ANCHORING SYSTEMS | 3.2.5 HIT-ICE ADHESIVE ANCHORING SYSTEM Hilti , Inc . 1-800-879-8000 | en español 1-800-879-5000 | www . hilti . com | Hilti ( Canada ) Corporation | www . hilti . ca | 1-800-363-4458