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Normal ConditionProject ID :SD - KIOSK-MYNLDANGEL LAZARO & ASSOCIATES INTERNATIONALCal'c byA.H. Sinconiegue(Consulting Engineer & Architects)DateJul-21-2014Checked byRhonda Divina A. RapirapDate :Jul-21-2014DateJul-21-2014Client :MAYNILADAprroved byAngel Lazaro III. Ph.DSubject :Design of Basement Retaining WallDateJul-21-2014REFERENCEProject Title :PROPOSED FOOD KIOSKREMARKSA. WALL PARAMETERS

Total height of retaining wall, H 3300mmHeight of the soil at the back of the wall, h13300mmHeight of the soil at the exposed face of the wall, h21200mmStem thickness, t250mmTotal length of footing, L2500mmFooting thickness, h400mmSurcharge Height, Sh =0.15mm

B. CONCRETE PARAMETERS

Compressive strength @ 28 days, f'c28MpaModulus of Elasticity, Ec = 4700f'c24870.06MpaUnit weight (normal concrete), c24KN/m3

C. STEEL PARAMETERS

MPa (Grade 40) for 12mm and smaller bars , fy276Mpa(to be used for temp. and shrinkage bars)

MPa (Grade 60) for larger bars (>12mm) , fy414Mpa(to be used for main and shear bars)

Modulus of Elasticity, Es200000MpaMain Horizontal bar size at exposed side, he10mmMainVertical bar size at exposed side, ve10mmMain Horizontal bar size at rear, hr10mmMain Vertical bar size at rear, vr16mmMain Reinforcement bar size at heel, h16mmMain Reinforcement bar size at toe, t10mmTemperature bar size, tb10mmStirrup bar size, s12mm

D. SOIL PARAMETERS

Unit Weight of Soil, s18KN/m3Allowable Bearing Capacity on Site, qall150kPaSurcharge, S2.7kPaFactor of Saefty against Overturning, FSOT2Factor of Saefty against Sliding, FSSL1.5Angle of Internal friction of soil, 30Backfill Slope angle, 0.00

E. Seismic Parameter

Importance Factor, I1Acceleration factor, A0.40Horizontal Acceleration Coefficient, 0.50*A = kh0.2Vertical Acceleration Coefficient, kv0.00Check Horizontal Acceleration, (1-kv)*TAN(-) 0.46Arc tan(kh/(1-kv)) = 11.31

F. Miscellaneous Parameters

Consider 1.0 meter strip , b1000mmMinimum Concrete Cover, Cc75mmFlexural strength reduction factor, f0.9Shear strength reduction factor, s0.75Pore water height, hw =1000mmUnit weight of water, w 9.81KN/m3

G. Design Calculation

Calculation for coefficient of active pressure, ka = (1-sin)/(1+sin)0.33Calculation for coefficient of passive pressure, kp = (1+sin)/(1-sin)3.00Consider 1.0 meter strip, b =1000mmCalculation for active soil force, Psoil = 1/2*s*(h1-h)^2*ka*cos25.23KNCalculation surcharge force, Psur = (S/s)*(s)*(h1-T)Ka(cos)7.569KNCalculation for water pore water force, Pwat = 1/2*w*(hw - h)^2*ka*cos0.589KNCalculation for passive soil force, Ppass = 1/2*s*(h2-h)^2*kp17.28KNCalculation for unfactored moment @ base, MnMn = Psoil*(h1-h)/7.5 + Psur*(h1-h)/8 + Pwat*(hw-h)/7.5 - Ppass*(h2-h)/7.5 =10.703KN.mCalculation for factore moment @ base, Mu = 1.7*Mn 18.196KN.m

Earthquake Condition