Under Mux , only those anchor bolts in red as shown below are in tension.
No of ver. rebar effective to resist tensile anchors n-Mux = number of ver.
rebar located around these anchor bolts in red within min( 0.5hef , 8" )
distance.
These rebar are considered to be effective to resist anchor bolt's tensile force.
ACI 318-11 RD.5.2.9
