ULS Check

1. Refer Annexure-A2 - Cl A2.9, Page 242,
Overall Depth of Section 1400 mm
Width of section 7500 mm
35 MPa
Factor to account long term effect with effect of size of Structural member, a 0.67
Safety factor for Concrete = 1.5 for Basic & Seismic Comb. & 1.2 for Accidental Comb., gm 1.5
Design value for concrete compressive strength (fcd = a*fck / gm) 15.63 MPa
500 MPa
Safety factor for Reinforcement = 1.15 for Basic & Seis. Comb. & 1.0 for Accid.Comb. , gm 1.15
Design Yield Strength of Reinforcement, fyd 434.78 MPa
Elastic Modulus Of steel Es 200000 Mpa
87 mm
Applied Moment due to Ultimate Loads, M 14515 kN-m
Factor defining the effective height of the compression zone, l 0.80
Factor defining the effective Strength, h 1.00
Compressive Force Fc = 93800 *(x)
Area of Steel Provided As = 434.29 cm2
32 137 54 434.29 1297
Force in Steel Fs = 18882322 N 0 0 0 0.00 1281
For Equillibrium Fc = Fs 0 0 0 0.00 1281
Therefore, 0 0 0 0.00 1281
Depth of concrete in compression (x) = 201 mm 434.29 1297
Design Yielding strain in steel = 0.0022
Maximum Strain in concrete, ecu3 = 0.0035
Strain in steel = 0.0191
Strain in steel > Design Yielding Strain of Steel
x / d = 0.1552
xu,max / d = 0.6169
Lever Arm = 1216 mm
Ultimate Moment Capacity Mu = 22970 kN-m
M/Mu = 0.63 < 1 HENCE, OK
Total Area & Average ' d '
Under-Reinforced Section
Dia. (mm)
Spacing
(mm)
No.
Area
(cm2
)
d (mm)
INPUT PARAMETERS
Characteristic Compressive cube Strength of concrete at 28 days , fck
Characteristic Yield Strength of Reinforcement, fyk
Clear Cover to main dia bar (Including Stirrups, if any)
ULTIMATE MOMENT CAPACITY CHECK
ULS CHECK OF RECTANGULAR BEAM ACCORDING TO IRC:112-2011