nap171

Please specify you SDL, LL, number of span, and your concrete strength. thks, Nap سازه 30 طبقه با سیستم لوله ای بتن با مقاومت 500 Dear friend, Still do not know about the info needed earlier, nonetheless if you are considering a flat slab, you need a 16 to 18in (heavy partitions) thick slab assuming the slab panel would be a square shape (16X16m), in addition to this you need a column with a good size capital at the interior bays, my estimate will be a 24inX24in col with 84inX84in capital to overcome the required shear and no need of capital portion at the exterior columns, the P/T forces will be a bit higher than normal, you may need to stress the slab as high as 390-400 psi to maintain the required moments (188-1/2" diameter 270ksi strands), as you see this option is a bit heavy, your best bet will be a two way slab with beams or drop panels. thks

Please specify you SDL, LL, number of span, and your concrete strength. thks, Nap