04 05 19 Masonry Anchorage and Reinforcing

04 05 19 Masonry Anchorage and Reinforcing

Masonry Reinforcing Bars

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Masonry reinforcing bars are used where imposed stresses exceed those allowed for unreinforced masonry. A structural engineer calculates the number, size and placement of the steel bars required to meet design loads. The loads are figured without consideration of the flexural resistance of the masonry itself, relying completely on the steel for tensile strength. Steel reinforcing bars may be located in the cavity of multi-wythe construction or be placed in cores of hollow units and grouted in place. Reinforcing bars fully embedded in high-strength grout do not usually require corrosion protection because they have sufficient grout cover to protect them from moisture.

Masonry Anchors

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Masonry anchors secure masonry to structural framing or supporting construction, such as a wall, floor, beam, or column. Individual ties, anchors, and inserts are available in galvanized steel, stainless steel and epoxy-coated steel. Building codes may determine the forces that need to be accommodated and the spacing of anchors.

Masonry Anchorage and Reinforcing

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Masonry anchorage and reinforcing perform the critical function of adding strength to masonry, either by transferring forces to the structure or by directly contributing resistance to applied loads. These systems are usually concealed within the masonry and therefore must be selected to resist corrosion, which could lead to catastrophic failure. Replacement of materials built into or embedded in masonry work is a very expensive and disruptive process.