Product Technical Guide Excerpt for HIT-ICE Cold Weather Adhesive Anchoring System

34
03/2018
Table 51 - Hilti HIT-ICE design information with Hilti HIS-N and HIS-RN internally threaded inserts c
in hammer drilled holes in accordance with CSA A23.3-14 Annex D
1
Design parameter Symbol Units
Nominal bolt/cap screw diameter (in.) Ref
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
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
k
c,uncr
3
– 10 D.6.2.2
Coeff. for factored concrete breakout resistance, cracked concrete
k
c,cr
3
– 7 D.6.2.2
Concrete material resistance factor
ф
c
– 0.65 8.4.2
Resistancemodicationfactorfortensionandshear,concretefailure
modes, Condition B
4
R
conc
– 1.00 D.5.3(c)
Temp.
range A
5
Characteristic bond stress in cracked concrete
6
τ
cr
psi 350 30
n/a n/a D.6.5.2
(MPa) (2.4) (0.2)
Characteristic bond stress in uncracked concrete
6
τ
uncr
psi 830 855 840 830
D.6.5.2
(MPa) (5.7) (5.9) (5.8) (5.7)
Reduction for seismic tension
α
N,seis
– n/a
Permissible
installation
conditions
Resistancemodicationfactortension&shear,bondfailure
dry concrete
Anchor
category
– 2 1 1 1
D.5.3(c)
R
dry
– 0.85 1.00 1.00 1.00
Resistancemodicationfactortension&shear,bondfailure
water-saturated concrete
Anchor
category
– 2 1 1 1
D.5.3(c)
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gure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coefcient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denedinACI318-1417.3.3.Forcaseswherethepresence
ofsupplementaryreinforcementcanbeveried,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signicant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
].
8 d
0
= drilled hole diameter.