Table 96 — Suggested embedment and edge distance ( see figure below ) based on CSA A23.3 Annex D to develop 125 % of f y in Canadian 400 MPa wall / column starter bars in a linear array with bar spacing = 600 millimeters - non-seismic design only 1 , 2 , 3 , 4 , 5 , 6
Rebar size 10M
Linear spacing s mm
Effective embed .
h ef mm ƒ ' c = 20 MPa ƒ ' c
= 25 MPa ƒ ' c = 30 MPa ƒ ' c
= 40 MPa
Cond . I
Minimum edge dist
c a , min mm
Cond . II
Effective embed .
h ef mm
Cond . I
Minimum edge dist
c a , min mm
Cond . II
Effective embed .
h ef mm
Cond . I
Minimum edge dist
c a , min mm
Cond . II
Effective embed .
h ef mm
Cond . I
Minimum edge dist
c a , min mm
200 520 220 200 510 200 200 510 190 190 500 180 15M 600 280 740 420 280 730 350 270 720 300 270 710 280 20M 510 1,340 760 430 1,150 650 380 1,010 570 320 870 460
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 = 600 mm . 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 further explanation , background information , and design examples . See Hilti Instructions for Use ( IFU ) for specific installation requirements .
≥ c a , min s = 600 mm s = 600 mm
Cond . II
( N ) ≥ c a , min h ef
SECTION ( E )
Bars in linear array
SECTION Illustration of Table 96 dimensions
PLAN
96 Anchor Fastening Technical Guide Edition 22 | 3.0 ANCHORING SYSTEMS | 3.2.2 HILTI HIT-HY 200 A / R V3 Hilti , Inc . 1-800-879-8000 | en español 1-800-879-5000 | www . hilti . com | Hilti ( Canada ) Corporation | www . hilti . ca | 1-800-363-4458