This presentation addresses the proper application of empirical crack control measures into concrete masonry wall systems as presented in NCMA TEK 10-2C. It includes causes of cracking, use of control joints and horizontal reinforcement to minimize cracking, details and banding (mixing courses of clay and concrete masonry).
(C205Da– 61 slides – 1 hr. LU/HSW)
Causes of cracking in concrete masonry
How to minimize cracking potential
How to control cracking through the use of reinforcement and control joints
How to maintain the fire resistance rating of a concrete masonry wall at a control joint
Keywords: banding, bond beams, carbonation, concrete masonry, construction details, control joints, crack control, expansion joints, joint reinforcement, movement, reinforcing steel, shrinkage, thermal movement, wall movement