STRUCTURAL ANALYSIS TOOL
Structural Analysis Calculator
Use the Structural Analysis Calculator to understand beam reactions, shear force, bending moment, SFD, BMD, loading conditions and structural behavior. This guide is useful for civil engineering students, structural engineers, site engineers and exam preparation.
Quick Answer
A structural analysis calculator helps calculate support reactions, shear force, bending moment, SFD and BMD for beams under different loads such as point load, UDL and moment load. It is mainly used to understand how loads travel through a structure.
What is Structural Analysis?
Structural analysis is the process of calculating the effect of loads on beams, columns, slabs, frames and other structural members. It helps engineers find support reactions, shear force, bending moment, deflection and internal forces so that a structure can be designed safely.
What Can This Calculator Help With?
Support reaction calculation
Shear Force Diagram (SFD)
Bending Moment Diagram (BMD)
Maximum bending moment
Point load analysis
UDL load analysis
Simply supported beam analysis
Cantilever beam analysis
Common Structural Analysis Outputs
| Output | Meaning | Use |
|---|---|---|
| Support Reaction | Force developed at beam supports | Used for support and foundation design |
| Shear Force | Internal vertical force in the beam | Used to check shear capacity |
| Bending Moment | Internal moment causing bending | Used for flexural design |
| SFD / BMD | Diagram of shear force and bending moment | Used to locate critical points in the beam |
Simply Supported Beam Analysis
A simply supported beam usually has a pin support at one end and a roller support at the other end. Structural analysis helps calculate reactions, shear force and bending moment for point loads, UDL and combined loads.
Cantilever Beam Analysis
A cantilever beam is fixed at one end and free at the other end. It is commonly used in balconies, projections and brackets. Analysis helps calculate fixed-end reaction, shear force and bending moment.
Basic Example
Suppose a simply supported beam carries a point load at the center. In this case, the load is shared equally by both supports.
Total load = W
Left reaction = W / 2
Right reaction = W / 2
After finding reactions, shear force and bending moment values are calculated along the beam to prepare SFD and BMD.
Frequently Asked Questions
What is a structural analysis calculator?
A structural analysis calculator helps calculate reactions, shear force, bending moment, SFD and BMD for structural members such as beams.
What is SFD?
SFD means Shear Force Diagram. It shows how shear force varies along the length of a beam.
What is BMD?
BMD means Bending Moment Diagram. It shows how bending moment changes along the beam length.
Is structural analysis important for civil engineering?
Yes, structural analysis is important because it helps engineers understand load transfer, internal forces and critical points in a structure.