Precast concrete structural unit and composite wall structure

Details Precast concrete structural unit and composite wall structure Precast concrete structural unit and composite wall structure

E - Fixed Constructions

04

B

72/17, 72/54

E04B 2/46 (2006.01) E04B 1/04 (2006.01) E04B 2/02 (2006.01)

Patent

CA 1127859

IMPROVED PRECAST CONCRETE STRUCTURAL UNIT AND COMPOSITE WALL STRUCTURE ABSTRACT OF THE DISCLOSURE Precast concrete structural units and a composite wall structure comprising a plurality of the units stacked vertically in staggered horizontal rows. Each unit com- prises a pair of laterally spaced longitudinally extending side panels. A pair of laterally extending connecting arms are formed integrally with the panels at their respective inner surfaces whereby to secure the panels in relatively fixed position. A mortise-tendon connection between super- posed units is provided for with a vertically recessed mortise at the bottom of each connecting arm and a comple- mentary vertically projecting tendon at the top of each arm. Each of the mortises and tendons defines a pair of laterally spaced oppositely facing generally vertical bearing surfaces and each mortise and tendon is approxi- mately 1/3 the total width of the associated structural unit. Longitudinal spacing of the connecting arms from each other is approximately twice the longitudinal spacing of each arm from the adjacent end of the side panels. Thus the units may be stacked vertically in horizontally staggered rows with horizontal displacement between units in adjacent rows approximately one half the length of a unit. The connecting arms are thus aligned vertically to provide columnar openings which may be filled for added structural integrity of a composite wall. A composite wall may include rows of wider units at the bottom with rows of narrow units thereabove and conversion units may be employ- ed at the interface between wider and narrower units. A bearing wall may include vertical tie rods for rows of wider units with foundation slabs therebeneath and beam slabs thereabove. A bearing slab may also be employed atop narrower upper units. Bearing material may be emplo- yed in joints between units and a filter and trim material may be employed in bearing and other walls. A shingle effect may also be provided to conceal horizontal joint lines.

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