DESIGN INFORMATION IN MASONRY
Table 30 — Allowable tension loads for Hilti KH-EZ , KH-EZ P , KH-EZ PM , KH-EZ PL , KH-EZ C and KH-EZ CRC installed in grout-filled masonry walls ( lb ) 1 , 2 , 3 , 4 , 5
Nominal anchor diameter in .
1 / 4
3 / 8
1 / 2
5 / 8
3 / 4
Embedment in . 6
Loads @
c cr and s cr
Critical - s cr in . 7
Spacing
Minimum - s min in . 7
Load reduction factor at s min
8
1-5 / 8 530 10 2 0.70 4 2-1 / 2 910 11 4 1.00
1-5 / 8 535 11 4 2 0.70 2-1 / 2 895 3-1 / 4 1,210 2-1 / 4 710 4 2
3 1,110 4-1 / 4 1,515 3-1 / 4 1,155 5 1,735 4 1,680
6-1 / 4 2,035
6 4 0.80
8 4
Edge distance
Critical - c cr Minimum- c min in . 9
4
4
0.60 4
10 4 0.60 4
12 4 0.60 4
Table 31 — Allowable shear loads for Hilti KH-EZ , KH-EZ P , KH-EZ PM , KH-EZ PL , KH-EZ C and KH-EZ CRC installed in grout-filled masonry walls ( lb ) 1 , 2 , 3 , 4 , 5
Nominal anchor diameter in .
1 / 4
3 / 8
1 / 2
5 / 8
3 / 4
Embedment in . 6
Load at c cr and s cr
Critical - s cr in . 7
Spacing
Minimum - s min in . 7
Load reduction factor at s min
8
Critical - c cr in . 9
Minimum - c min in . 9
Edge distance Load reduction factor at c min
perpendicular to edge parallel to edge
1-5 / 8 675 10 1.00 1.00
4 4 1.00 4 4 2-1 / 2 840 11 1.00 1.00
1-5 / 8 |
1,140 11
|
|
|
|
|
|
0.61 |
1.00 |
2-1 / 2 |
1,165 |
6 |
4 |
0.94 |
6 |
4 |
0.70 |
1.00 |
3-1 / 4 1,190 0.70 1.00 2-1 / 4 1,845
0.50 1.00
3 2,055 8 4 0.88 8 4
0.45 0.94 4-1 / 4 2,745 0.40 0.89 3-1 / 4 3,040
0.36 0.82
10 4 0.36 10 4 5 3,485 0.34 0.92
4 3,040 0.36 0.82
10 4 0.36 10 4 6-1 / 4 3,485 0.34 0.92
1 All values are for anchors installed in fully grouted masonry with minimum masonry prism strength of 1,500 psi . Concrete masonry units may be lightweight , medium-weight or normalweight .
2 Anchors may not be installed within one inch in any direction of a vertical joint . 3 Linear interpolation of load values between minimum spacing s min and critical spacing s cr and between minimum edge distance c min and critical edge distance c cr is permitted .
5 / 3 5 / 3
T applied
V applied
T 4 For combined loading : For 1 / 4-in . - + ≤ 1 For 3 / 8- through 3 / 4-in . - + ≤ 1
( applied
V
T allowable
) ( applied
T allowable
V allowable
V allowable
)
5 See Figure 5 on Page 21 of this document for anchor locations for anchor locations . 6 Embedment depth is measured from the outside face of the concrete masonry embedment . 7 Critical spacing s cr is the anchor spacing where full load values may be used . The minimum spacing s min is the minimum spacing for which values are available and installation is recommended . Spacing is measured from the center of one anchor to the center of the adjacent anchor .
8 Load reduction factors are multiplicative , both spacing and edge distance load reduction factors must be considered . Load values for anchors installed at less than c cr or s cr must be multiplied by the appropriate load reduction factor based on actual edge distance ( c ) or spacing ( s ). 9 The critical edge distance c cr is the edge distance where full load values may be used . The minimum edge distance c min is the minimum edge distance for which values are available and installation is recommended . For tension , c cr equals c min
. Edge distance is measured from the center of the anchor to the closest edge . 10 Load values must be reduced by 21 % for installations within 1-1 / 4 inches of the bed joint . 11 Load values must be reduced by 13 % for installations within 1-1 / 4 inches of the bed joint .
348 Anchor Fastening Technical Guide Edition 22 | 3.0 ANCHORING SYSTEMS | 3.3.6 KWIK HUS-EZ SCREW ANCHOR 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