chimney raft design

Unit :- KN, Metre Project : Building:

Total Load 747556.4 kN Outside Pop Pip InsideNet safe Bearing capacity 500 kN/sqmWall thickness 1.1 mOuter Pedestal width 'Pop' 19.10 mInnerr Pedestal width 'Pip' 18.50 mRadius of wall centreline 'R' 18 mRequired Area of foundation 1495.1 sqmRequired radius 'Ro' 21.82 mTaken radius 'Ro' 24.00 mActual Bearing Pressure 'p' 413 kN/sqmR/Ro 0.75Location for Moments f y2, y6 y3, y7 y4, y8 r Mr MtAt outer edge of raft 'f1 ' 1 3.82 -4.50 -8.00 24.0 2 3162Centre of outer edge and pedestal 'f2' 1.28 3.82 -4.50 -8.00 30.8 -7709 675At Outer pedestal face 'f3' 1.57 3.82 -4.50 -8.00 37.7 -29194 -5981At Outer Wall face 'f4' 0.77 3.82 -4.50 -8.00 18.6 -8343 3806At centre of wall 'f5' 0.75 -1.88 0.00 0.00 18.0 -10245 3977At inner wall face 'f6' 0.73 -1.88 0.00 0.00 17.5 -8659 4707At inner pedestal face 'f7' -0.04 -1.88 0.00 0.00 -1.1 #NUM! #NUM!Centre of inner edge and pedestal 'f8' -0.02 -1.88 0.00 0.00 -0.5 #NUM! #NUM!At centre of raft 'f9' 0.00 -1.88 0.00 0.00 0.0 16107 16107Designed by RKY Date: 14-Jun-15Mr = ((p*(R0^2))/64)*((-12.6*f^2)-(2.3*Y2,Y6)+(0.85*Y3,Y7/f^2)-(Y4,Y8*(3.15+2.3*LN(f)))) kNmMt = ((p*R0^2)/64)*((-5.8*f^2)-(2.3*y2,y6)-(0.85*y3,y7/(f^2))-(y4,y8*(1.45+2.3*(LN(f))))) kNm

Analysis of Full Circular Raft for Axial Loads.

Note : Enter data in yellow cells only.

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-7709

-29194

-8343-10245 -8659

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16107

3162675

-5981

3806 3977 4707

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16107

-35000

-30000

-25000

-20000

-15000

-10000

-5000

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5000

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15000

20000

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