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1. #International residential code lap splice install#
2. #International residential code lap splice crack#

Reflecting its multiple purposes in masonry walls, joint reinforcement comes in several configurations.

#International residential code lap splice install#

Joint reinforcement of this thickness may be difficult to install however, if a uniform mortar joint thickness of ⅜ in. 4) limits the size of joint reinforcement to one half the joint thickness, the practical limit for wire diameter is W2.8, ( 3/ 16 in., MW17) for a ⅜ in. Wire for masonry is plain, except side wires for joint reinforcement are deformed by means of knurling wheels.īecause Building Code Requirements for Masonry Structures (ref. diameter MW7 to MW32), the most popular size being W1.7 (9 gage, MW11). Cold-drawn wire for joint reinforcement varies from W1.1 to W4.9 (11 gage to ¼ in. 2), if the joint reinforcement is stainless steel according to the Specification for Masonry Structures (ref. 1), or Standard Specification for Stainless Steel Wire, ASTM A580/A580M Type 304 or Type 316 (ref. Joint reinforcement is governed by Standard Specification for Masonry Joint Reinforcement, ASTM A951 (ref. Reinforcement types used in masonry principally are reinforcing bars and cold-drawn wire products. Detailed information on additional uses for joint reinforcement can be found in other TEK as referenced throughout this publication. This TEK discusses the code and specification requirements for joint reinforcement and presents a general discussion of the function of joint reinforcement in concrete masonry walls. In some instances, it may be used in design for flexural resistance or to meet prescriptive seismic requirements. Joint reinforcement also increases a wall’s resistance to horizontal bending, but is not widely recognized by the model building codes for structural purposes.

#International residential code lap splice crack#

See Crack Control in Concrete Masonry Walls, TEK 10-1A (ref. Note that horizontal steel requirements for crack control can be met using joint reinforcement or reinforcing bars. It was initially conceived primarily to control wall cracking associated with thermal or moisture shrinkage or expansion and as an alternative to masonry headers when tying masonry wythes together. Standard joint reinforcement for concrete masonry is a factory-fabricated welded wire assembly consisting of two or more longitudinal wires connected with cross wires forming a truss or ladder configuration.