Instructions / Assembly

92
Anchor Fastening Technical Guide Edition 22 | 3.0 ANCHORING SYSTEMS | 3.2.2 HILTI HIT-HY 200 A/R V3
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Table 92 — Suggested embedment and edge distance (see figure below) based on ACI 318 Chapter 17 to develop 125% of
f
y
in Grade 60 wall/column starter bars in a linear array with bar spacing = 18 inches - SDC A and B only
1,2,3,4,5,6
Rebar
size
Linear
spacing
s
in.
ƒ'
c
= 2,500 psi ƒ'
c
= 3,000 psi ƒ'
c
= 4,000 psi ƒ'
c
= 6,000 psi
Effective
embed.
h
ef
in.
Minimum
edge dist
c
a,min
in.
Effective
embed.
h
ef
in.
Minimum
edge dist
c
a,min
in.
Effective
embed.
h
ef
in.
Minimum
edge dist
c
a,min
in.
Effective
embed.
h
ef
in.
Minimum
edge dist
c
a,min
in.
Cond.
I
Cond.
II
Cond.
I
Cond.
II
Cond.
I
Cond.
II
Cond.
I
Cond.
II
#3
18
7188 7187 7187 7176
#4 10 25 14 10 25 13 9 24 12 9 24 10
#5 18 47 27 16 41 24 13 34 19 11 29 15
1 h
ef
is the calculated bar embedment based on uncracked bond and concrete breakout strengths using equations in section 3.1.14 to develop 125% of nominal bar yield. Shaded embedment
values exceed 20 bar diameters. For non-tabulated rebar sizes, design per development length provisions is recommended. The particular assumptions used for the application of
anchor theory to bar development (e.g., bar yield and bond strength values) are a matter of engineering judgment and will in part depend on the specific circumstances of the design. For
embedments corresponding to nominal yield (i.e., no overstrength) multiply the tabulated h
ef
values by 0.86.
2 c
a
is the minimum edge distance (from bar centerline) associated with the tabulated embedments and s = 18 in. Refer to sec. 3.1.14 for applicability of edge distance “Condition I” and
“Condition II.”
3 Applicable for hammer-drilled holes. For rock-drilled and core-drilled holes, contact Hilti.
4 Values determined with bond stresses, k-factors and strength reduction factors taken from ESR-4868, Tables 12 and 13 assuming dry, uncracked concrete conditions where concrete
temperatures will not exceed a maximum short-term temperature of 130°F (55°C) and long-term temperature of 110°F (43°C). Bond stresses are for static (non-seismic) loading conditions.
5 Values are for normal weight concrete. For lightweight concrete contact Hilti.
6 Refer to the Hilti North America Post-Installed Reinforcing Bar Guide for detailed explanation, background information, and design examples. See Hilti Instructions for Use (IFU) for specific
installation requirements.
SECTION
(E)
h
ef
(N)
≥ c
a,min
PLANSECTION
≥ c
a,min
s = 18 in. s = 18 in.
Bars in linear array
Illustration of Table 92 dimensions