Use=93 N/mm 2 Made Date Sheet AMY 29-Oct-14 1 OK T16 -150 Active pressure ' Ka' For Water 1 Surcharge CASE 1 : SOIL - + Material Properties Weight of reinforced concrete "γ rc " 24 kN/m 3 Weight of soil "γ soil " % of seel (ρ) minmum mm mm2 mm mm mm ACI 350-01, R10.6.4 GERGELY LUTZ EXPRSSION ACI 350-01 section 14.3.2 Minimum ratio of vertical reinforcement area to gross concrete area shall be 0.003 PROJECT TITLE: PRINCE MAJED PALACE DESIGN OF UNDERGROUND WATER TANK Check Date Rev. MMA 29-Oct-14 0 1) Negative moment at abase : =37 Load Weight of water "γ water " 10 kN/m 3 =.541 d =332 % of seel (ρ) =.00132 Area of steel Provided =1206 Space Between Two Bar's " S " =167 Area of steel = ρ x b x h Provided " S " =150 Angle of friction "j " 33 18 Thickness of bottom slab " t s " Geometrical Properties 400 mm Shrinkage &Temp. Steel Dia 10 mm Strength of concrete " f ' c " Strength of steel "f y " mm 10 N/mm 2 20 Diameter of stirrups N/mm 2 415 Degree 50 mm kN/m 3 Thickness of wall " t wall " 400 mm Surcharge " q " 10 kN/m 2 kN.m Hight of tank " h " 4.4 m 0.2948 Active pressure ' Ka' Clear cover to concrete =60 kN.m Moment Earth Pressure =1200 mm 2 No. of bar =( As/Abar) =6 Bar's FS= (Mu/As x d) =.10272 3)Crack widht check : M service = =37 kN.m dc =58 W=0.011 x Fs x (dc +A)^1/3/1000 M ultimate = M servic x 1.6 Diameter of bar 16 mm PLEASE CHOOSE DIAMETER OF BAR 2) Negative moment Steel (vertical wall) : mm c/c =.00300 mm A= 2x dc x Space =17400 mm 2 − = × × + × × = − Made Date Sheet AMY 29-Oct-14 1 PROJECT TITLE: PRINCE MAJED PALACE DESIGN OF UNDERGROUND WATER TANK Check Date Rev. MMA 29-Oct-14 0 Use -150 For one face Use Use Area of steel Provided mm c/c Diameter of bar 20 mm PLEASE CHOOSE DIAMETER OF BAR d =340 mm d =344 mm Provided " S " =175 mm T12 -175 =2 Bar's ACI 350-01 section 14.3.2 Minimum ratio of horizontal reinforcement area to groos concrete area shall be 0.003 mm c/c T20 -200 Provided " S " =150 T16 Diameter of bar 12 mm PLEASE CHOOSE DIAMETER OF BAR Area of steel =0.003x b x h =1200 mm 2 Provided " S " =436 mm water pressure on the base slab and weight of the base will directly counteracted by the ground pressure .The pressure of water can be safely resisted by the soil under the floor . Hence : The floor slab or base slab will only requier normal rienforcement ,so as the enable if to span over any possible weak pathes at ground . Diameter of bar 16 mm PLEASE CHOOSE DIAMETER OF BAR d =342 mm No. of bar =( As/Abar) =.00117 =1200 =6 =1200 =167 7) Base slab : Area of steel =0.0018x b x h =720 mm 2 No. of bar =( As/Abar) =.481 No. of bar =( As/Abar) =5 Bar's Space Between Two Bar's " S " =188 mm Space Between Two Bar's " S " 6) Horizontal moment Steel : mm c/c kN.m 5) Positve moment Steel : % of seel (ρ) ACI 350-01 section 14.3.2 Minimum ratio of vertical reinforcement area to gross concrete area shall be 0.003 % of seel (ρ) minmum =.00300 Area of steel = ρ x b x h 4) Positive moment in R.C wall : M ultimate = M servic x1.6 =56 =35 kN.m =600 mm 2 + = × × . + × × × = − Made Date Sheet AMY 29-Oct-14 1 PROJECT TITLE: PRINCE MAJED PALACE DESIGN OF UNDERGROUND WATER TANK Check Date Rev. MMA 29-Oct-14 0 Use Use Use T20 - 425 Provided " S " =150 mm PLEASE CHOOSE DIAMETER OF BAR d =340 mm ACI 350-01, R10.6.4 GERGELY LUTZ EXPRSSION 344 mm Provided " S " =175 mm T12 -175 Diameter of bar 12 mm PLEASE CHOOSE DIAMETER OF BAR 4) Positive moment in R.C wall : =25 kN.m mm 2 No. of bar =( As/Abar) =2 Bar's =58 mm kN.m dc Ultimate Moment " Mu" = 1.6 x M service =91 kN.m =.824 % of seel (ρ) % of seel (ρ) minmum =.0020 =.0030 Space Between Two Bar's " S " =1200 =6 =1200 =167 mm Diameter of bar 20 =57 T16 -150 2) Negative moment Steel (vertical wall) : Diameter of bar 16 mm PLEASE CHOOSE DIAMETER OF BAR d =342 mm =720 water pressure on the base slab and weight of the base will directly counteracted by the ground pressure .The pressure of water can be safely resisted by the soil under the floor . Hence : The floor slab or base slab will only requier normal rienforcement ,so as the enable if to span over any possible weak pathes at ground . ACI 350-01 section 14.3.2 Minimum ratio of horizontal reinforcement area to groos concrete area shall be 0.003 mm c/c d ACI 350-01 section 14.3.2 Minimum ratio of vertical reinforcement area to groos concrete area shall be 0.003 mm c/c 5) Horizontal moment Steel : Area of steel (As) minmum =1200 mm 2 For One Face =600 mm 2 No .Of Bar For One face =5 Bars Area of steel Provided =436 mm 3)Crack widht check : M service mm Area of steel = ρ x b x h No. of bar =( As/Abar) Area of steel Provided = NO.OF BAR x Area Of Bar =57 kN.m mm c/c Both 2- WAY OK A= 2x dc x Space FS= (Mu/As x d) W=0.011 x Fs x (dc +A)^1/3/1000 =21854 mm 2 =138 N/mm 2 =.165 mm Space Between Two Bar's " S " =188 mm 6) Base slab : Area of steel =0.0018x b x h mm 2 Bars mm 2 CASE 2 : WATER 1) Negative moment at abase : − = × × − = × . = − T12 -175 T16 -150 T16 -150 T20 -200 GRAVEL FILL (1"-6" SIZE) (TYP) 1000mm DEEP EMPTY TANK TWO LAYERS OF APPROVED WATERPROOFING MEMBERANE (TYP) TWO LAYERS OF APPROVED WATER PROOFING MEMBRANE WITH PROTECTION BOARD (TYP) EMPTY WATER 50 THK. PROTECTION SCREED (TYP) 50 THK. BLINDING CONCRETE (TYP) T16 -150 T12 -175 T20 -425 Water Level HYDRAULIC TEST STAGE 50 THK. BLINDING CONCRETE (TYP) TWO LAYERS OF APPROVED WATERPROOFING MEMBERANE (TYP) TWO LAYERS OF APPROVED WATER PROOFING MEMBRANE WITH PROTECTION BOARD (TYP) GRAVEL FILL (1"-6" SIZE) (TYP) 1000mm DEEP 50 THK. PROTECTION SCREED (TYP) WATER IN SIDE