1.0 TENSION
1.2 Concrete Breakout Failure Mode
Variables c ac
( continued )
Variables ACI 318-19 Chapter 17 Provision Comments for PROFIS Engineering
c ac
The critical edge distance c ac must be calculated according to Eq . 17.4.5.5c for ACI 318-14 or Eq . D-27a for ACI 318-11 , in lieu of ACI 318-14 17.7.6 or ACI 318-11 D . 8.6 as applicable .
c ac
= h ef т k , uncr
0.4
⁎ 3.1 – 0.7 h 1160 h ef
( Eq . 17.4.5.5c for ACI 318-14 or Eq . D-27a for ACI 318-11 ) where h
h ef need not be taken as larger than 2.4 ; and т k , uncr is the characteristic bond strength in uncracked concrete , h is the member thickness , and h ef is the embedment depth . т k , uncr need not be taken greater than : т k , uncr
= k uncr h ef ƒ ́c Eq . ( 4-1 ) π d
62 NORTH AMERICAN PROFIS ENGINEERING ANCHORING TO CONCRETE DESIGN GUIDE — ACI 318-19 Provisions