IRC:SP:105-2015 calculating tools

IRC:SP:105-2015 Concrete Bridge Design Suite

Interactive Design Modules combining Solved Examples from IRC:SP:105 & IRC:112 Limit State Design

Ex 10.1: Variable Angle Shear Truss

Concrete Grade ($f_{ck}$ MPa) M35M40M50

Steel Yield Strength ($f_{yk}$ MPa)

Web Width $b_w$ (mm)

Effective Depth $d$ (mm)

Design Shear Force $V_{Ed}$ (kN)

Strut Angle $\theta$ (deg) [Range: 21.8° - 45°]

Stirrup Leg Area $A_{sw}$ (mm²)

IRC:SP:105 Shear Results

Max Capacity $V_{Rd,max}$

-

Required Spacing $s_w$

-

Crushing Check

OK

Click 'Run Shear Check' to see step-by-step calculations.

Ex 9.1: In-Plane Membrane Element

Plate Thickness $t$ (mm)

Normal In-Plane Force $n_{Edx}$ (kN/m)

Normal In-Plane Force $n_{Edy}$ (kN/m)

In-Plane Shear Force $n_{Edxy}$ (kN/m)

Concrete Grade $f_{ck}$ (MPa)

Sandwich Model Reinforcement (Annexure B-1)

Design Steel $a_{sxd}$

-

Design Steel $a_{syd}$

-

Concrete Strut Stress

-

Click 'Design Membrane Reinforcement' to solve.

Ex 12.1: SLS Crack Width & Stress

Service Moment $M_{qp}$ (kNm)

Width $b$ (mm)

Effective Depth $d$ (mm)

Provided Steel $A_{st}$ (mm²)

Bar Diameter $\phi$ (mm)

Cover $c$ (mm)

Serviceability Verification

Steel Stress $\sigma_s$

-

Crack Width $w_k$

-

Crack Limit Check

OK (< 0.2mm)

Click 'Run SLS Checks' to view calculation.

Ex 8.3: Biaxial Column Bending

Pier $B \times D$ (mm)

Ultimate Axial Force $N_{Ed}$ (kN)

Bending Moment $M_{Edx}$ (kNm)

Bending Moment $M_{Edy}$ (kNm)

Uniaxial Moment Cap $M_{Rdx1}, M_{Rdy1}$ (kNm)

IRC:112 Eq 8.28 Biaxial Check

Exponent $\alpha_n$

-

Interaction Ratio

-

Biaxial Check

SAFE

Yogendra Gopal Borse

Civil Engineer | Assistant Engineer Grade-I, Maharashtra PWD

B.Tech (Civil) from VJTI Mumbai. Experienced in bridge design, road works, estimation, project monitoring and digital engineering tools. Creator of YogiPWD – practical technical resources for civil engineers.

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