Week 5 Challenge
Aim:- Calculate loads manually acting on pier foundation and design as per IRC 6,78 and 112, difference between free and fix pier and how it impacts the foundation size Also add the calculation of loading in both the cases AndDetailing of the foundation reinforcement And List all RCC design checks to be done in the ultimate state and serviceability state for a cracked section as per IRC codes and mention clauses.
1 Basic dasign data:-
1.1 Span and Cross section Data
C/C of expansion gap (Left Span) = 13.30 m (Sq.)
C/C of bearing (Left Span) = 12.30 m (Sq.)
Girder overhang beyond bearing (Left Span) = 0.35 m (Sq.)
Distance of bearing to expansion gap (Left span) = 0.5 m (Sq.)
C/C of expansion gap (Right Span) = 13.30 m (Sq.)
C/C of bearing (Right Span) = 12.30 m (Sq.)
Girder overhang beyond bearing (Left Span) = 0.35 m (Sq.)
Distance of bearing to expansion gap (Right span) = 0.5 m (Sq.)
Carriageway width = 11.00 m
Total width = 12.00 m
2 Superstructural details
No of longitudinal girders = 4
C/c spacing of longitudinal girders = 3.00
Footpath Width (Left side) = 0.00 m
Footpath Width (Right side) = 0.00 m
Crash Barrier Width (Left side) = 0.50 m
Crash Barrier Width (Right side) = 0.50 m
CG of crash barrier = 0.373 m
Handrail Width (Left side) = 0.00 m
Handrail Width (Right side) = 0.00 m
Wearing Coat Thickness = 0.065 m
Depth of superstructure (Left Span) = 1.320 m
Depth of superstructure (Right Span) = 1.320 m
CG of superstructure from bottom (Left Span) = 0.88 m
CG of superstructure from bottom (Right Span) = 0.88 m
Height of crash barrier = 0.90 m
Bearing thickness (Max) = 0.07 m
Height of pedestal = 0.25 m (Min.)
Expansion joint = 0.04 m
Superelevation/camber = 2.50%
Type of superstructure = RCC Girder and Dec+$AH$19k
Skew Angle = 0.00 o 0.000 radians
3. Salient Levels For design purpose only
Height of Substructures = 10 m
Finished Road Level FRL = 230.115 m
Bearing Level (Avg) BRL = 228.458 m
Pier Cap Top Level CTL = 2227.393 m
Footing top Level FTL = 217.262 m
Footing bottom Level FBL = 216.262 m
Lowest Bed Level LBL = 224.178 m
Maximum Scour Level MSL = 218.262 m
Highest Flood Level HFL = 227.105 m
Lowest Water Level LWL = 224.178 m
Founding Level (Actual) FL = 216.262 m
Founding Level (Design) FL = 216.262 m
Clear cover for foundation = 75 mm
4.Water Current Data
Max. mean velocity = 0.98 m/s
Constant "K" for pier in transverse dirn. = 0.66
Constant "K" for pier in longitudinal dirn. = 1.5 (Cl. 210.2, IRC:6-2014)
% of Uplift Considered = 100 %
5.Material Data
For Pier cap, pier and Footing
Grade of concrete fck = M35
Design strength of concrete fcd 15.63 MPa
Modulus of Elasticity of steel Es = 2.0E+05 MPa
Modulus of Elasticity of concrete Ec = 3.2E+04 MPa
Mean tensile strength of concrete fctm = 2.8 MPa
Grade of steel fyk = Fe500
Design strength of steel fyd 434.8 MPa
Density of concrete (RCC & PCC) conc_dens = 2.5 t/m3 (Cl.203 (6), IRC 6 2010)
Density of wearing course = 2.2 t/m3
Coefficient of Thermal Expansion of concrete = 1.2E-05 /oC (Cl.215.4, IRC 6 2010)
Shrinkage strain for concrete = 2.0E-04 (Cl.217.3, IRC 6 2010)
6.Soil Data
Density of soil = 2.0 t/m3
Submerged Density of soil = 1.0 t/m3
Type of soil = Medium Soil
Net safe bearing capacity at founding level = 25 t/m2
Gross SBS seicmic case (LWL) = 33.92 t/m3
Gross SBS seicmic case (HFL) = 27 t/m3
Refer attached Word file sheet