DATEPAGE NO. 1 OF 2DOC. NO.

Type-1 foundation( DESIGN):vertical load = 57 twt. of soil: 35.70 twt. of base: 23.63 tpedestal wt.: 10 tFoundation F1 (ends):total vertical load : 126.33 tcorrection to vertical load for water table:deduct for uplift: 0 tnet load: 126.3298 t

ped size along x and y resp. = 3.1 0.8

provide 5500 x 3500 x 700 thk footingFx= 3.609 t Mx= 6.63 t-mFy= 3.605 t My= 6.63 t-m

Moments at the bottom of the footing:Mxb =area = 19.25 sq.m 5.5 3.5 total load= 126.3298 tZx= 17.65 cu.m Mx= 17.99 t-mZy= 11.22917 cu.m My= 18.00 t-mPmax= P/A + Mx/Zx + My/Zy = 9.19 t/sq.mP2= P/A - Mx/Zx + My/Zy 7.15 t/sq.mP3= P/A - Mx/Zx - My/Zy 3.94 t/sq.mP4= P/A + Mx/Zx - My/Zy 5.98 t/sq.m

neutral axis intercept on x-axis : neutral axis intercept on y-axis:10.03 m 15.77 m

Design for bending along X for bottom steel:distance between pedestal face & footing edge : 1.35 mmax. pressure at footing edge: 9.19 t/sq.m < 10 t/sq.mmin. pressure = 5.98 t/sq.m < 10 t/sq.mmax. pressure at bending critical secn.: 7.95 t/sq.mmin. pressure = 5.91 t/sq.m < 10 t/sq.mavg. max. pressure = 7.58 t/sq.m < 10 t/sq.mavg. min. pressure = 6.93 t/sq.m < 10 t/sq.meffective depth = 625 mmupward BM due to soil pressure = 6.71 t-mdownward BM due to soil pressure and slab weight: 3.73 t-mnet BM= 2.98Mu/bd2= 0.11 pt = 0.171 Ast reqd.= 10.69 sq.cmProvide 16 dia. @150 C-C. Ast prov.is 16.09 sq.cm

CANAP ENGINEERING PVT LTD24-03-15

FOUNDATION DESIGN CALCULATION for 100 M3 BUFFER VESSEL

"each leg supports half of hydrotest weight of vessel"

DATEPAGE NO. 2 OF 2DOC. NO.

Check for shear along X for bottom steel:Distance between shear critical secn. & footing edge : 0.575max. pressure at footing edge: 9.19 t/sq.mmin. pressure = 5.98 0.575max. pressure at shear critical secn. 8.66min. pressure = 6.62avg. max. pressure = 7.58avg. min. pressure = 7.64 effective depth = 625 mmupward SF due to soil pressure = 4.38downward SF due to soil wt. & footing slab: 2.06Net SF= 2.31 pt = 0.26Tv = 0.06From table 61 of SP 16, shear = 0.37 Hence O.K.Design for bending along x for top steel:Distance between pedestal face & footing edge : 1.35 mmax. pressure at bending critical secn.: 5.45min. pressure = 3.41max. pressure at footing edge: 4.15min. pressure = 2.11avg. max. pressure = 4.43avg. min. pressure = 3.13effective depth = 625 mmUpward BM due to soil pressure = 3.25downward BM due to soil pressure and slab weight: 3.73Net BM = -0.48Mu/bd2= -0.02 pt = 0.084 Ast reqd.= 5.25Provide 20 dia. @140 C-C. Ast prov.is 11.31 sq.cmFOS against overturning along X:d/2e= 19.30 >2.0 Hence O.K.FOS against sliding along X:UP/H= 18.05 >1.5 Hence O.K.

FOUNDATION DESIGN CALCULATION for 100 M3 BUFFER VESSEL

CANAP ENGINEERING PVT LTD24-03-15