Product Technical Guide Excerpt for HSL-3 Heavy Duty Expansion Anchor
272
Anchor Fastening Technical Guide Edition 19 | 3.0 ANCHORING SYSTEMS | 3.3.2 HSL-3 HEAVY-DUTY EXPANSION ANCHORS
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(s
min,1
– s
min,2
)
s ≥ s
min,2
+
___________
(c – c
min,2
)
(c
min,1
– c
min,2
)
For a specific edge distance, the permitted
spacing is calculated as follows:
c
design
edge distance c
c
min,1
at s
min,1
c
min,2
at s
min,2
s
design
spacing s
Figure 2
Concrete
Edge
Anchors not permitted
in shaded area
s
min,2
s
min,1
c
min,1
c
min,2
Case 1
Case 2
Table 5 — Edge distance, spacing and member thickness requirements
1
Condition Dimensional parameter Symbol Units
Nominal anchor diameter
M8 M10 M12 M16 M20 M24
A
Minimum concrete thickness h
min
in. 4-3/4 5-1/2 6-1/4 7-7/8 9-7/8 11-7/8
(mm) (120) (140) (160) (200) (250) (300)
Critical edge distance c
ac
in. 4-3/8 4-3/8 4-3/4 5-7/8 8-7/8 8-7/8
(mm) (110) (110) (120) (150) (225) (225)
Case 1
Minimum edge distance c
min,1
in. 2-3/8 2-3/4 3-1/2 4-3/4 5 5-7/8
(mm) (60) (70) (90) (120) (125) (150)
Minimum anchor spacing s
min,1
in. 5-1/2 9-1/2 11 12-5/8 13-3/4 11-7/8
(mm) (140) (240) (280) (320) (350) (300)
Case 2
Minimum edge distance c
min,2
in. 3-3/8 5 6-1/8 7-7/8 8-1/4 8-1/4
(mm) (85) (125) (155) (200) (210) (210)
Minimum anchor spacing s
min,2
in. 2-3/8 2-3/4 3-1/8 4 5 5-7/8
(mm) (60) (70) (80) (100) (125) (150)
B
Minimum concrete thickness h
min
in. 4-3/8 4-3/4 5-3/8 6-1/4 7-1/2 8-7/8
(mm) (110) (120) (135) (160) (190) (225)
Critical edge distance c
ac
in. 5-7/8 6-7/8 7-7/8 9-7/8 12-3/8 14-3/4
(mm) (150) (175) (200) (250) (312.5) (375)
Case 1
Minimum edge distance c
min,1
in. 2-3/8 3-1/2 4-3/8 6-1/4 7-7/8 8-7/8
(mm) (60) (90) (110) (160) (200) (225)
Minimum anchor spacing s
min,1
in. 7 10-1/4 12-5/8 15 15-3/4 15
(mm) (180) (260) (320) (380) (400) (380)
Case 2
Minimum edge distance c
min,2
in. 4 6-1/4 7-7/8 10-5/8 11-7/8 12-5/8
(mm) (100) (160) (200) (270) (300) (320)
Minimum anchor spacing s
min,2
in. 2-3/8 2-3/4 3-1/8 4 5 5-7/8
(mm) (60) (70) (80) (100) (125) (150)
1 Linear interpolation is permitted to establish an edge distance and spacing combination between Case 1 and Case 2.
Linear interpolation for a specic edge distance c, where c
min,1
< c < c
min,2
will determine the permissible spacing s as follows: