Bending moment
A bending moment (BM) is a measure of the bending effect that can occur when an external force (or moment) is applied to a structural element. This concept is important in structural engineering as it is can be used to calculate where, and how much bending may occur when forces are applied.
The most common structural element that is subject to bending moments is the beam, which may bend when loaded at any point along its length.
Failure can occur due to bending when the tensile stress exerted by a force is equivalent to or greater than the ultimate strength (or yield stress) of the element. However, although the mechanisms are different, a beam may fail due to shear forces before failure in bending.
If a beam is not well-restrained, a bending force may cause it to rotate about a pivot point.
To calculate the bending moment, the magnitude of the force is multiplied by the distance of the force from the point of support.
[edit] Related articles on Designing Buildings Wiki
Featured articles and news
Statement of health and early intervention.
The importance of regular check-ups
And related links on DB.
Sustainable urban drainage systems SUDS
Rooflights, skylights, roof windows and Part L
Shedding some light on the new Building Regulations.
Interview with historic built environment surveyor.
Upgraded membership category now requires assessment.
The average kinetic energy of molecules
Temperature in buildings, explained on DB
Women and unequal pay in project management
Main barrier to entering the profession, new study reveals.
IHBC’s response to Parliamentary Committee
On Levelling-Up and Regeneration Bill.
Finalists for 2022 CIOB Awards revealed
Over 70 managers and organisations shortlisted for the 14 awards.
Types of building sensors on BD
From biometric to electrical current, chemical and more.
Government mandates detectors in rented homes
Changes are due to come into force on 1st October 2022.
80% of major government projects are rated red or amber
Heed advice and insight of this report IPA tells the government.
The end of the games but continued calls for action
From the Commonwealth Association of Architects.
Sustainable urban drainage systems SUDS
Comments
This happened to my roof which is sagging now. What is the outcome, will it collapse? It is 2 years old.
If you are concerned about your roof, you should get a structural engineer to inspect it as soon as possible.