Anchor Fastening Technical Guide , Edition 22
Table 68 — Hilti HIT-HY 200 A / R V3 adhesive design information with CA rebar in hammer drilled holes in accordance with CSA A23.3 Annex D 1
Rebar size |
Ref |
Design parameter |
Symbol |
Units |
10M |
15M |
20M |
25M |
30M |
A23.3-14 |
Rebar diameter |
d a
|
mm |
11.3 |
16.0 |
19.5 |
25.2 |
29.9 |
Effective minimum embedment 2
|
h ef , min
|
mm |
70 |
80 |
90 |
101 |
120 |
Effective maximum embedment 2
|
h ef , max
|
mm |
226 |
320 |
390 |
504 |
598 |
3.2.2
Minimum concrete thickness 2 h min mm h ef
+ 30 h ef + 2d o
Critical edge distance |
c ac
|
– |
|
|
2h ef
|
|
|
Minimum edge distance 3
|
c min
|
mm |
57 |
80 |
98 |
126 |
150 |
Minimum rebar spacing s min mm 57 80 98 126 150
Coeff . for factored conc . breakout resistance , uncracked concrete 4 k c , uncr – 10 D . 6.2.2
Coeff . for factored conc . breakout resistance , cracked concrete 4 k c , cr – 7 D . 6.2.2
Concrete material resistance factor A se , N – 0.65 8.4.2
Resistance modification factor for tension and shear , concrete failure modes , Condition B 5 ф s
– 1.00 D . 5.3 ( c )
Temp range A 6
Temp range B 6
Temp range C 6 psi 1,075 1,085 1,095 840 850
Characteristic bond stress in cracked concrete 7 , 8 τ cr ( MPa ) ( 7.4 ) ( 7.5 ) ( 7.6 ) ( 5.8 ) ( 5.9 ) psi 1,560 1,560 1,560 1,560 1,560
Characteristic bond stress in uncracked concrete 7 , 8 τ uncr
( MPa ) ( 10.8 ) ( 10.8 ) ( 10.8 ) ( 10.8 ) ( 10.8 ) psi 990 995 1,005 775 780
Characteristic bond stress in cracked concrete 7 , 8 τ cr
( MPa ) ( 6.8 ) ( 6.9 ) ( 6.9 ) ( 5.3 ) ( 5.4 ) psi 1,435 1,435 1,435 1,435 1,435
Characteristic bond stress in uncracked concrete 7 , 8 τ uncr
( MPa ) ( 9.9 ) ( 9.9 ) ( 9.9 ) ( 9.9 ) ( 9.9 ) psi 845 850 860 660 670
Characteristic bond stress in cracked concrete 7 , 8 τ cr
( MPa ) ( 5.8 ) ( 5.9 ) ( 5.9 ) ( 4.6 ) ( 4.6 ) psi 1,230 1,230 1,230 1,230 1,230
Characteristic bond stress in uncracked concrete 7 , 8 τ uncr ( MPa ) ( 8.5 ) ( 8.5 ) ( 8.5 ) ( 8.5 ) ( 8.5 )
Reduction for seismic tension α N , seis
– 0.80 0.85 0.97
Permissible installation conditions 5
Resistance modification factor tension & shear , bond failure dry and water saturated concrete
Resistance modification factor tension & shear , bond failure water-filled concrete
Anchor category
– 1
R dry
, R ws – 1.00
Anchor category
– 3
R wf
– 0.75
1 Design information in this table is taken from ELC-4868 , tables 16 and 17 , for use with CSA A23.3 Annex D . 2 See figure 8 of this section . 3 Minimum edge distance may be reduced to 45mm provided rebar remains untorqued . See ELC-4868 Installation Torque Subject to Edge Distance section . 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 For use with the load combinations of CSA A23.3 chapter 8 . Condition B applies where supplementary reinforcement in conformance with CSA A23.3 section D . 5.3 is not provided , or where pullout or pryout strength governs . For cases where the presence of supplementary reinforcement can be verified , the resistance modification 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 ). Temperature range B : Max . short term temperature = 176 ° F ( 80 ° C ), max . long term temperature = 110 ° F ( 43 ° C ). Temperature range C : Max . short term temperature = 248 ° F ( 120 ° C ), max . long term temperature = 162 ° F ( 72 ° 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 ƒ ' c = 2,500 psi ( 17.2 MPa ). For concrete compressive strength , ƒ ' 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 ( ƒ ' c / 2,500 ) 0 . 1 [ for SI : ( ƒ ' c
/ 17.2 ) 0 . 1 ].
8 For water-filled holes , multiply characteristic bond stress by 0.97 .
D . 6.5.2
D . 6.5.2
D . 6.5.2
D . 6.5.2
D . 6.5.2
D . 6.5.2
D . 5.3 ( c )
D . 5.3 ( c )
Anchor Fastening Technical Guide Edition 22 | 3.0 ANCHORING SYSTEMS | 3.2.2 HILTI HIT-HY 200 A / R V3 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
75