Structural Beam Calculations, Structural Design Analysis for Beam

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Structural beam plays crucial role in the overall stability and safety
of the building or structure. The process of determining the
sufficiency of steel, wood or even a concrete beam is more or less the
same.

Once you choose a beam, the process of structural analysis is as
follows:
• Identify the live and dead loads
• Calculate the stresses
• Compare the allowable stresses against the actual stresses

Determine the Loads

First step in the structural beam analysis is identify the amount of
load or weight the beam is going to support. There are two types of
loads:

Dead Loads – this kind of loads are permanently attached to a
structure such as weight of building materials, fixtures, etc. Many
times loads of materials are exactly known and can be considered
together to find out the total dead load. Sometimes the dead load is
barely assumed and is added with an approximate weight.

Live Loads – this kind of load is temporarily placed on a structure
such as loads from wind, vehicles, etc. The amount of live loads is
referenced in regional building codes.

Calculating the Stresses
While designing or analyzing a beam, two types of stresses are
calculated: bending stress and shear stress. A more comprehensive
knowledge of both shear tress and bending stress is required for beam
analysis. In order to calculate the bending and shear stresses it is
necessary to calculate the maximum shear and maximum bending moment
that take place within the beam.

The maximum shear and moment will most commonly take place at various
locations and the process used to identify their value is critical for
overall stability of structure. The other two pieces of information
needed to identify the stresses is the section modulus and cross
sectional area of the beam. The section modulus and cross sectional
area can be calculated, or in most cases can be found out in tables
(like AISC Steel Manual for steel beams and the National Design
Specification for wood).

Allowable Stress vs. Actual Stress

For most structures the allowable stresses are mentioned in a design
manual of some sorts (such as AISC Steel Manual for steel and the NDS
for wood).

While carrying beam design analysis, one must choose right structural
design software and cad techniques. Various engineering design
software are available in the market for beams, columns, sections and
foundation design. AutoCAD, StaddPro and Tekla are most sought after
structural design software by structural engineers and designers.

Email us at in...@cadoutsourcingservices.com to help you in best
possible way for structural beam design and analysis related
requirements.

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