builderbill

Graphical Construction Glossary >> Roofs and roofing. >> Roof Trusses >> truncated truss

Truncated truss
In nailplate truss construction. A standard truss that has been truncated or has had it's top cut off. Usually to allow jack trusses to pass over it in hip roofs. The term girder is commonly applied as these trusses often act as a girder supporting the minor trusses abutting it.
Jack truss
In nailplate truss construction, a subsidiary truss that is fixed to a trunc-truss with its's top chord flying over it to reach the hip. Where not fixed to a trunc-truss it is fixed to a hip truss.



truncated trusses
Trunc. trusses laid out prior fixing.

truncated truss
jack truss

All the jack trusses in any one hip end have the same bottom chord and vertical member that abut the trunc. truss.

The difference is in the top chords, they come in pairs of varying lengths as do standard jack rafters.

As we go down the hip and leave the trunc. truss then the jack pairs have no vertical sections, just open ended chors and webs.

jack trusses
Jack trusses.



If you didn't find exactly what you are looking for try this search tool that will search the site and the web.


"What can be added to the happiness of a man who is in health, out of debt, and has a clear conscience?
Adam Smith 1723-1790


"When we build, let us think that we build for ever."John Ruskin 1819-1900


coates hire
Hire Equipment
hafele
Furniture Fittings - Architectural Hardware - Electronic Locking Systems - Technical Hardware
BuilderBill sponsorship

BuilderBill Books


building maths
Building Maths

Stair Design
asbestos ebook
Asbestos Book

Calculator Pages.

Concrete yardage calculator

Reader's Questions.

Questions and answers.


 

 



Please Note! The information on this site is offered as a guide only!  When we are talking about areas where building regulations or safety regulations could exist,the information here could be wrong for your area.  It could be out of date!  Regulations breed faster than rabbits!
You must check your own local conditions.
Copyright © Bill Bradley 2007-2012. All rights reserved.
Page copy protected against web site content infringement by Copyscape