DESIGN OF ISOLATED FOUNDATION / FOOTING UNDER
BI-AXIAL MOMENTS AS PER IS 456-2000
(Actual Program is Available in BRAW Software)
FOUNDATION DESIGNATION
FOUNDATION DEPTH BELOW GROUND LEVEL [M]
NET SAFE BEARING CAPACITY
@
ABOVE DEPTH [T/M2]
FOUNDATION WIDTH [M] { SHORTER DIMENSION }
FOUNDATION LENGTH [M] { LONGER DIMENSION }
FOUNDATION THICKNESS [MMS]
NATURE OF FOOTING THICKNESS
UNIFORM
APPLIED BM ON FOUND. [T-M] {without load factor}
(Along Longer Footing Dimension)
APPLIED BM ON FOUND. [T-M] {without load factor}
(Along Shorter Footing Dimension)
DESIGN AXIAL FORCE [TONS]{ without load factor }
SELECT NATURE OF AXIAL LOAD
COMPRESSIVE
INPUT LOAD FACTOR
COLUMN SIZE [MMS]
{ ALONG SHORTER FOOTING DIR }
COLUMN SIZE [MMS]
{ ALONG LONGER FOOTING DIR
}
SELECT CONCRETE GRADE
M20
M25
M30
M35
M40
SELECT DIA OF BARS ALONG LONGER FTG DIRECTION
8 MM
10 MM
12 MM
16 MM
20 MM
25 MM
28 MM
32 MM
36 MM
40 MM
SELECT DIA OF BARS ALONG SHORTER FTG DIRECTION
8 MM
10 MM
12 MM
16 MM
20 MM
25 MM
28 MM
32 MM
36 MM
40 MM
SELECT EXPOSURE CONDITION OF FOUNDATION
MILD
MODERATE
SEVERE
VERY SEVERE
E X T R E M E
CHARACTERISTIC STRENGTH OF REINFORCEMENT (f y )
[N/mm2]
DESIGN RESULT
Design Of R C Isolated Foundation As Per IS-456-2000 ------------------------------------------------------------------------ Footing Designation = F1 Foundation Depth [m] = 1 SBC [t/m2] = 20 Foundation Width [m] = 2 Foundation Length [m] = 2 Applied Bending Moment [t-m] (Along Longer Footing Dimension) = Applied Bending Moment [t-m] (Along Shorter Footing Dimension) = Applied Load [tons] = 75 Nature of Axial Load = COMPRESSIVE Column Size Along Longer FTG dir. [mm] = 300 Column Size Along Shorter FTG dir. [mm] = 300 Applied Load Factor = 1.5 Exposure Condition = MILD Concrete Grade Required = M 20 Char. Reinforcement Strength (fy) = 415 N/mm2 Clear Cover to Longer Bars [mm] = 50 Minimum Cement content Required in Concrete [kg/m3] = 300 Maximum Water to Cement Ratio = 0.55 FOS against Over Turning = 834000 > 1.2 : OK Uniform Thickness of Foundation [mm] = 500 TOTAL QUANTITY OF CONC. IN FTG. IN M3 = 2 Maximum Soil Pressure [T/M2] = 20.75 Minimum Soil Pressure [T/M2] = 20.74 Design Soil Pressure @ Longer [T/M2] = 20.75 Design Soil Pressure @ Shorter [T/M2] = 20.75 Reinforcement Required Along Longer Dir @ Bottom = 6.51 CM2/M Reinforcement Required along Shorter Dir @ Bottom = 6.51 CM2/M Reinforcement Spacing Along Longer Dir @ Bottom = Ø 10 @ 121 mm c/c Reinforcement Spacing Along Shorter Dir @ Bottom = Ø 10 @ 121 mm c/c Concrete Quantity [m3] = 2