Cut Sheet

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3
TECH MANUAL – MECHANICAL ANCHORS ©2016 POWERS – REV. D
DESIGN CRITERIA
Mechanical anchors
design criteriA
Combined Loading
For anchors loaded in both shear and tension, the combination of loads should be proportioned as follows:
N
u
N
n
( )
V
u
V
n
( )
+
≤ 1
Where: N
u
= Applied Service Tension Load
N
n
= Allowable Tension Load
V
u
= Applied Service Shear Load
V
n
= Allowable Shear Load
Load Adjustment Factors for Spacing and Edge Distances in Normal-Weight Concrete
1
Anchor
Dimension
Load Type
Critical Distance
(Full Anchor Capacity)
Critical
Load Factor
Minimum Distance
(Reduced Capacity)
Minimum
Load Factor
Spacing (s) Tension and Shear s
cr
= 10d F
NS
= F
VS
= 1.0 s
min
= 5d F
NS
= F
VS
= 0.50
Edge Distnace (c)
Tension c
cr
= 12d F
NC
= 1.0 c
min
= 6d F
NC
= 0.80
Shear c
cr
= 12d F
VC
= 1.0 c
min
= 6d F
VC
= 0.50
1. Allowable load values found in the performance data tables are multiplied by reduction factors when anchor spacing or edge distances are less than critical distances. Linear interpolation
is allowed for intermediate anchor spacing and edge distances between critical and minimum distances. When an anchor is affected by both reduced spacing and edge distance, the
spacing and edge reduction factors must be combined (multiplied). Multiple reduction factors for anchor spacing and edge distance may be required depending on the anchor group
configuration.
ordering inforMAtion
Mushroom Head Zamac Nailin with Carbon Steel Nail
Catalog
Number
Anchor Size
Drill
Diameter
Standard
Box
Standard
Carton
Wt./
100
2802 3/16" x 7/8" 3/16" 100 500 3/4
2806 1/4" x 3/4" 1/4" 100 500 1-1/2
2808 1/4" x 1" 1/4" 100 500 1-3/4
2814 1/4" x 1-1/4" 1/4" 100 500 2-1/4
2820 1/4" x 1-1/2" 1/4" 100 500 2-1/2
2826 1/4" x 2" 1/4" 100 500 3
2804 1/4" x 3" 1/4" 100 500 4
The published size includes the diameter and length of the anchor measured from under the shoulder of the anchor body.
Master Pack Mushroom Head Zamac Nailin with Carbon Steel Nail
Catalog
Number
Anchor Size
Drill
Diameter
Standard
Box
Standard
Carton
Wt./
100
2803 3/16" x 7/8" 3/16" – 1,000 3/4
2807 1/4" x 3/4" 1/4" – 1,000 1-1/2
2809 1/4" x 1" 1/4" – 1,000 1-3/4
2815 1/4" x 1-1/4" 1/4" – 1,000 2-1/4
2821 1/4" x 1-1/2" 1/4" – 1,000 2-1/2
2827 1/4" x 2" 1/4" – 1,000 3
2805 1/4" x 3" 1/4" – 1,000 4
The published size includes the diameter and length of the anchor measured from under the shoulder of the anchor body.
Flat Head Zamac Nailin with Carbon Steel Nailin
Catalog
Number
Anchor Size
Drill
Diameter
Standard
Box
Standard
Carton
Wt./
100
2836 1/4" x 1-1/2" 1/4" 100 500 2-1/2
2838 1/4" x 2" 1/4" 100 500 3
The published size includes the diameter and length of the anchor measured from under the shoulder of the anchor body.
Mushroom Head Zamac Nailin with Stainless Steel Nailin
Catalog
Number
Anchor Size
Drill
Diameter
Standard
Box
Standard
Carton
Wt./
100
2858 1/4" x 1" 1/4" 100 500 1-3/4
2864 1/4" x 1-1/4" 1/4" 100 500 2-1/4
2870 1/4’ x 1-1/2" 1/4" 100 500 2-1/2
2876 1/4" x 2" 1/4" 100 500 3
The published size includes the diameter and length of the anchor measured from under the shoulder of the anchor body.