RCC Underground Water Tank Plan With 18x18 Column And 6 Inch Slab

RCC underground water tank drawing showing complete structural layout with tank plan, tank bottom, and tank top arrangement. The design includes column sizes 18 inches x 18 inches for C1 to C4 and column C5 size 12 inches x 12 inches with footing layouts. Excavation marking is provided as 28 x 28 with PCC thickness 6 inches and footing sizes such as 5 feet 6 inches x 5 feet 6 inches and 3 feet 6 inches x 3 feet 6 inches. The drawing also illustrates the RCC raft thickness of 9 inches, top slab thickness of 6 inches, and beam size 12 inches x 24 inches. Detailed schedules of RCC beams, columns, and slab reinforcement are provided, including bar diameters such as 20 mm, 16 mm, and 12 m,m with stirrup spacing of 8 mm at 100 mm and 150 mm intervals for proper structural stability.