Supplementary Document
ADHESIVES
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TECH MANUAL – ADHESIVES ©2016 POWERS VOLUME 1 – REV. M
REFERENCE DATA (ASD)
Allowable Load Capacities for Threaded Rod Installed with AC100+ Gold into Grout
Filled Concrete Masonry (Based on Bond Strength/Masonry Strength)
1,2,3,7,9,12,17
Anchor
Diameter
d
(inch)
Minimum
Embedment
hnom
(inch)
Critical Spacing
Distance
scr
(inch)
Minimum Edge
Distance
cmin
(inch)
Minimum End
Distance
cmin
(inch)
Tension Load
(lbs)
Direction of Shear
Loading
Shear Load
(lbs)
Anchor Installed Into Grouted Masonry Wall Faces
4,5,6,8,10,11,13
3/8 3
6 3 3 615 Towards Edge/End 275
6 3 3 615 Away From Edge/End 340
6 3 4 735
17
Any 490
17
6 12 12 960
17
Any 855
17
1/2 4
8 3 3 720 Towards Edge/End 429
8 3 3 720 Away From Edge/End 1320
8 4 4 985
17
Any 655
17
8 12 12 960 Towards Edge/End 1430
8 12 12 960 Away From Edge/End 1760
8 7-3/4 (Bed Joint) 3 935 Load To Edge 460
5/8 5
10 3 3 712 Towards Edge/End 459
10 3 3 712 Away From Edge/End 1410
10 12 12 1095 Towards Edge/End 1530
10 12 12 1095 Away From Edge/End 1880
10 7-3/4 (Bed Joint) 3 1030
17
Load To Edge 590
17
3/4 6
12 4 4 754 Towards Edge/End 628
12 4 4 754 Away From Edge/End 1448
12 12 12 1160 Towards Edge/End 1570
12 12 12 1160 Away From Edge/End 1930
12 7-3/4 (Bed Joint) 4 945 Load To Edge 565
Anchor Installed Into Tops of Grouted Masonry Walls
14,15
Anchor
Diameter
d
(inch)
Minimum
Embedment
hnom
(inch)
Minimum Spacing
Distance
Minimum Edge
Distance
cmin
(inch)
Minimum End
Distance
cmin
(inch)
Tension Load
(lbs)
Direction of Shear
Loading
Shear Load
(lbs)
1/2
2.75 1 anchor per cell 1.75 4 595
17
Any 300
17
4 1 anchor per cell 1.75 3 520 Load To Edge 190
4 1 anchor per cell 1.75 3 520 Load To End 300
10 1 anchor per block
16
1.75 10.5 1670 Load To Edge 190
10 1 anchor per block
16
1.75 10.5 1670 Load To End 300
5/8
5 1 anchor per cell 1.75 3 745 Load To Edge 240
5 1 anchor per cell 1.75 3 745 Load To End 300
12.5 1 anchor per block
16
2.75 10.5 2095 Load To Edge 240
12.5 1 anchor per block
16
2.75 10.5 2095 Load To End 300
3/4
6 1 anchor per cell 2.75 4 1260 Load To Edge 410
6 1 anchor per cell 2.75 4 1260 Load To End 490
1. Tabulated load values are for anchors installed in nominal 8-inch wide (203 mm) Grade N, Type II, lightweight, medium-weight or normal-weight grout filled concrete masonry units with
a minimum masonry strength, f’m, of 1,500 psi (10.3 MPa) conforming to ASTM C 90. If the specified compressive strength of the masonry, f’m, is 2,000 psi (13.8 MPa) minimum the
tabulated values may be increased by 4 percent (multiplied by 1.04).
2. Allowable bond or masonry strengths in tension and shear are calculated using a safety factor of 5.0 and must be checked against the allowable tension and shear capacities for threaded
rod based on steel strength to determine the controlling factor. See allowable load table based on steel strength.
3. Embedment is measured from the outside surface of the concrete masonry unit to the embedded end of the anchor.
4. Anchors may be installed in the grouted cells, cell webs and bed joints not closer than 1-1/2-inch from the vertical mortar joint (head joint) provided the minimum edge and end distances
are maintained. Anchors may be placed in the head joint if the vertical joint is mortared full-depth.
5. A maximum of two anchors may be installed in a single masonry cell in accordance with the spacing and edge or end distance requirements.
6. The critical spacing, s
cr
, for use with the anchor values shown in this table is 16 anchor diameters. The critical spacing, s
cr
, distance is the distance where the full load values in the table
may be used. The minimum spacing distance, s
min
, is the minimum anchor spacing for which values are available and installation is permitted. For 3/8-inch diameter anchors, the spacing
may be reduced to 8 anchor diameters when using a tension reduction factor of 0.70 and a shear reduction factor of 0.45. For ½ - and 5/8 – inch diameter anchors, the spacing may
be reduced to 8 anchor diameters when using a tension reduction factor of 0.85 and a shear reduction factor of 0.45. For 3/4-inch diameter anchors, the spacing may be reduced to 8
anchor diameters when using a tension reduction factor of 1.00 and a shear reduction factor of 0.45.
7. Spacing distance is measured from the centerline to centerline between two anchors.
8. The critical edge or end distance, c
cr
, is the distance where full load values in the table may be used. The minimum edge or end distance, c
min
, is the minimum distance for which values
are available and installation is permitted.
9. Edge or end distance is measured from anchor centerline to the closest unrestrained edge.
10. Linear interpolation of load values between the minimum spacing, s
min
, and critical spacing, s
cr
, distances and between minimum edge or end distance, c
min
, and critical edge or end
distance, c
cr
, is permitted.
11. The tabulated values are applicable for anchors in the ends of grout-filled concrete masonry units where minimum edge and end distances are maintained.
12. The tabulated values must be adjusted for increased in-service base material temperatures in accordance with the In-Service Temperature chart, as applicable.
13. Concrete masonry width (wall thickness) must be equal to or greater than 1.5 times the anchor embedment depth (e.g. 3/8-inch and 1/2-inch diameter anchors are permitted in nominally
6-inch-thick concrete masonry). The 5/8-inch and 3/4-inch diameter anchors must be installed in minimum nominally 8-inch-thck concrete masonry.
14. Anchors must be installed into the grouted cell; anchors are not permitted to be installed in a head joint, flange or wen of the concrete masonry unit.
15. Allowable shear loads parallel or perpendicular to the edge of a masonry wall may be applied in or out of plane.
16. Anchors with minimum spacing distance of one anchor per block may not be installed in adjacent cells (i.e. one cell must separate the anchor locations).
17. Tabulated values not included in ESR-3200.