1 answer

Determine the required footing thickness and design the reinforcement for the combined foot ing shown in...

Question:

Determine the required footing thickness and design the reinforcement for the combined foot ing shown in Figure 10.30. Use concrete with f-3,000 lb/in, and reinforcing steel with f, = 60 k/in2. P 200 k Po=400 k 12 in square 18 in square 2.5 15 7.5 Footing Width, B = 9 ft Figure 10.30 Combined footing for Problem 10.15

Determine the required footing thickness and design the reinforcement for the combined foot ing shown in Figure 10.30. Use concrete with f-3,000 lb/in, and reinforcing steel with f, = 60 k/in2. P 200 k Po=400 k 12 in square 18 in square 2.5 15' 7.5 Footing Width, B = 9 ft Figure 10.30 Combined footing for Problem 10.15

Answers

Size of fooings ft gft Avea of footing : 26Kg : 225 ftl - 20.903 2n® 20okip 4854 uere Ci C2 Co- of foobiny 1S 4.512m 15.286 242 p 162 4.572m 2-286m 918-153 226 12.5665-d),ワ b=6.2296 + %) 서 26 822 SFD (KN) 2.1954m 622 118 52.9 1.046 01 6592 914 ,932 Soting equi red Gviical cection frs one wy sheas y frm nte of the support wi be at ditante In given case mose shear is at coluooting e same 0-3042 M 04512 Fors column CL Shea force 0:30 IR +虫)m from centre of Column CL 622 178 (11169- 03048d 2. 2. (56Punching area at cI c3+d)xd a C Runching ehess af face of clumn , Tunh 569-3641 175.24294 44 (0 30448+d)d Punching cress te ocfing eonu Hence, povide deft- 21omi Concicleing clears Coves 50 p b an size = 25 mm dia. 275-0 25 ovided Hente sechion is unProvide 朿25 @ 160mmcle longitudinally ot batねmt m CIC (贞26@ 5.5 cle) 2.0 As 2x415 = 1601-2578 mm2- -R ovide奀)6@ 115 mm cle.

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