Product Technical Guides : US-EN Anchor Fastening - August 2021 | Page 367

DESIGN INFORMATION IN MASONRY

Anchor Fastening Technical Guide , Edition 22

Table 16 — Allowable tension loads for Hilti KH-EZ SS316 and KH-EZ C SS316 installed in grout-filled masonry walls walls ( lb ) ^{1 , 2 , 3 , 4 , 5}

Nominal anchor diameter in .

1 / 4

3 / 8

1 / 2

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

Critical - C _cr in . ⁹

Edge distance

Minimum - C _min in . ⁹

Load reduction factor at c _min

8

1-5 / 8 125 1.00

1.00 4 4

4 4 2-1 / 2 194 1.00 1.00

2 332 0.74

0.71 6 4

6 4 3-1 / 4 629 0.62 0.86

2-1 / 4 331 0.56

0.91 8 4

8 4 4-1 / 4 874 0.56 0.75

Table 17 — Allowable Shear loads for Hilti KH-EZ SS316 and KH-EZ C SS316 installed in grout-filled masonry walls ( lb ) ^{1 , 2 , 3 , 4 , 5}

Nominal anchor diameter in .

1 / 4

3 / 8

1 / 2

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 / 8 468 1.00 1.00

4 4

4 4 2-1 / 2 574 1.00 1.00

2 742 0.90 1.00

6 4 0.95

6 4 3-1 / 4 1,006 0.98 0.99

2-1 / 4 1,039 0.82 0.97

8 4 8 4 4-1 / 4 1,787 0.48 0.94

3.3.7

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 .

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 . Edge distance is measured from the center of the anchor to the closest edge .

Table 18 — Hilti KH-EZ SS316 allowable loads installed in top of grout-filled concrete masonry walls ^{1 , 2 , 3}

Nominal anchor diameter in .

Minimum embedment depth in .

Edge distance ⁴ in .

Critical spacing ⁵ in .

Minimum end distance ⁶ in .

Tension lb

Parallel to edge of masonry wall

Shear lb Load direction

Perpendicular to edge of masonry wall

1 / 2 4 1 / 4 1 3 / 4 8 8 614 809 200

1 All values are for anchors installed in fully grouted concrete masonry with minimum masonry prism strength of 1,500 psi . Concrete masonry units may be lightweight , medium-weight or normal-weight conforming to ASTM C90 . Allowable loads are calculated using safety factor of 5 .

2 See figure 6 and 7 for allowable anchor installation locations on the top of grout-filled concrete masonry walls . Anchors may not be installed within 1-1 / 4 inch of a vertical joint . 3 Anchors may not be installed within 1-1 / 4 " in any direction of a head joint . 4 For load values at edge distances between listed values linear interpolation is permitted . 5 Critical spacing equals minimum spacing . 6 Minimum end distance applicable to top-of-wall and end-of-wall and does not apply for wall openings such as windows .

Anchor Fastening Technical Guide Edition 22 | 3.0 ANCHORING SYSTEMS | 3.3.7 KWIK HUS-EZ SS316 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

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