A big box retail store is built with CMU bearing walls around its perimeter. The store measures 450 ft across the front and back and 360 ft across the sides. The walls are 28 ft tall and are reinforced horizontally with truss bars in alternate courses and vertically with #4 bars 32 in. on-center. There is an 8” tall bond beam running around the full perimeter of the building at the roof level (24 ft) to support the roof framing. The openings in the CMU walls, and the associated lintels are as follows:OpeningLocationQuantitySize(H X W)LintelLintel RebarDoorFront wall28’-0” x 10’-0”16” tall CMU2, #4DoorSide wall2 eachside8’-0” x 4’-0”8” tall CMU1, #4DoorBack wall38’-0” x 9’-0”16” tall CMU2, #4WindowSide wall24’-0” x 3’-0”8” tall CMU1, #4Note: each lintel should be a multiple of 8” long and have 8” of bearing on each side of the opening. Opening sizes are listed as height x width.a.Determine the national average bare cost for the lintels using RSMeans 04 22 10.(30 pts)
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