ACI-349 Approval for KB-TZ2 Expansion Anchor

Applicability of the KB-TZ2 Anchor
12
August 2021
Table 6 - Minimum edge distance, spacing and concrete thickness for KB-TZ2
Setting
information
Symbol Units
Nominal anchor diameter (in)
1/4 3/8 1/2 5/8 3/4 1
Effective min.
embedment
h
ef
in. 1-1/ 2 1-1/2 2 2-1/2 1-1/2 2 2-1/2 3-1/4 2-3/4 3-1/4 4 3-1/4 3-3/4 4-3/4 4 5-3/4
(mm) (38) (38) (51) (64) (38) (51) (64) (83) (70) (83) (102) (83) (95) (121) (102) (146)
Min. member
thickness
h
min
in. 3 -1/4 3-1/4 4 5 3-1/ 2 4 5 5-1/ 2 5 5-1/ 2 6 5-1/2 6 8 8 10
(mm) (83) (83) (102) (127) (89) (102) (127) (140) (127) (140) (152) (140) (152) (203) (203) (254)
Carbon steel
Min. edge
distance
c
min
in. 1-1/ 2 5 2-1/2 2-1/2 8 2-3/4 2-3/4 2-1/4 4-1/2 3-1/2 2-3/4 5 4 3-1/2 8 3
(mm) (38) (127) (64) (64) (203) (70) (70) (57) (114) (89) (70) (127) (102) (89) (203) (76)
for s ≥
in. 1-1/ 2 8 6 5 12 5 -1/2 9-3/4 5-1/4 6-1/ 2 5-1/2 7-1/4 10 5-3/4 5-1/2 8 6-3/4
(mm) (38) (203) (152) (127) (305) (140) (248) (133) (165) (140) (184) (254) (146) (140) (203) (171)
Min. anchor
spacing
s
min
in. 1-1/ 2 5 2-1/4 2 12 3-1/ 2 3 2 4-1/2 2-3/4 2-1/4 4-1/ 2 3-3/4 3-3/4 8 4-3/4
(mm) (38) (127) (57) (51) (305) (89) (76) (51) (114) (70) (57) (114) (95) (95) (203) (121)
for c ≥
In. 1-1/2 8 3-1/ 2 4 8 10 8 4-3/4 5 -1/ 2 7 4-1/4 6 7-1/4 4-3/4 8 3-3/4
(mm) (38) (203) (89) (102) (203) (254) (203) (121) (140) (178) (108) (152) (184) (121) (203) (95)
Stainless steel
Min. edge
distance
c
min
in. 1-1/ 2 5 2-1/2 2-1/2 2-3/4 2-1/2 2-1/4 4 3-1/4 2-1/4 5 4 3-3/4 3-3/4 3
(mm) (38) (127) (64) (64) (70) (64) (57) (102) (83) (57) (127) (102) (95) (95) (76)
for s ≥
in. 1-1/ 2 8 5 5 5-1/2 4-1/2 5-1/4 7 5-1/2 7 11 7-1/2 5-3/4 10 6-3/4
(mm) (38) (203) (127) (127) (140) (114) (133) (178) (140) (178) (279) (191) (146) (254) (171)
Min. anchor
spacing
s
min
in. 1-1/ 2 5 2-1/4 2-1/4 2-3/4 2-1/2 2 5-1/2 2-3/4 3 5 4 4 5 4-3/4
(mm) (38) (127) (57) (57) (70) (64) (51) (140) (70) (76) (127) (102) (102) (127) (121)
for c ≥
In. 1-1/2 8 4 3-1/ 2 4-1/8 4 -1/ 2 4-1/ 2 5-1/2 4 4-1/4 8 6 5-1/4 4-1/4 3-3/4
(mm) (38) (203) (102) (89) (105) (114) (114) (140) (102) (108) (203) (152) (133) (108) (95)
For SI: 1 inch = 25.4 mm
s
c
h ≥ h
min
c
min
at s ≥
s
min
at c ≥
c
s
edge distance (c)
spacing (s)
Figure 3 — Interpolation of minimum edge distance and anchor spacing