Concrete Design

1.1 TWO-WAY SLAB 1.1.2 Calculating slab thickness and the Reinforcement required: 1. narrate slab thickness [D = short clear span (Lnx) / 38] to find Self-weight S/W = D x 25 = KPa (a) find G & Q ( Assume 150mm for D if not given) (b) SERVICEABILITY: (short span) Lx = min(L, Ln + D) = in meters (long span) Ly = min(L, Ln + D) = in meters 2. Find ?L & ?s normally they atomic number 18 ?L = 0.4 ?s = 0.7 4. Assume Kcs = 2 (no compression reinforcement) 5. spirit formula on page 98 to check if (D) information is OK, alone first find (dx) dx = D cover dr/2 (Assume avert Diameter if not given.

N12 is best) (a) For the deemed to comply formula on (page 98) practise [Lef/d = Lx/dx] for both cases in vocalism b) (i) & (ii) where dx = D cover dr/2 (Assume Bar Diameter. Best whizz is N12) (b) conduct attention to K3 & K4 ! Page 99 & 100 If the slab is support on quaternity sides must check two parade conditions: The formula on page 98 has to be utilise for both (i) & (ii) they both have Different K4 values but everything else is the same. i) Two adjacent progresss discontinuous ii) whizz long edge discontinuous ----------------------If (D) is not OK estimate a untried bar Diameter and start Step 5 again-------------------- 6. If (D) is OK from step 5 use it as your depth...If you inadequacy to take down a full essay, order it on our website: BestEssayCheap.com

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