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CAT NO: DIDACTICNLE-Export-056015
Basic Roof Truss Engineering Lab Training Systems.
Features
Low cost, effective teaching
Self-contained
Bench mounted
Truss angle can be varied
Direct read out of strut and tie forces by spring balances
Three year warranty
Range of Experiments
To compare experimental values of the forces in the struts and tie of a basic roof truss with theoretical predictions
To observe the effect of changing the tie bar length
Description
The
basic roof truss consists of two rafters or struts and a restraining
tie. Both rafters are pivoted at their apex. The other end of one of the
rafters is pivoted to a free standing base, whilst the remaining rafter
end runs on ball bearings along a track. When a load is hung from the
apex, the free end of the rafter moves sideways, restrained by a spring
balance tie.
Both rafters also include spring balances so that all internal loads can be directly measured.
Re-adjustment
of the geometry back to its original unloaded configuration is easily
made before taking measurements. The length of the tie can be varied to
change the angles of the truss.
This equipment is part of a range
designed to both demonstrate and experimentally confirm basic
engineering principles. Great care has been given to each item so as to
provide wide experimental scope without unduly complicating or
compromising the design. Each piece of apparatus is self-contained and
compact. Setting up time is minimal, and all measurements are made with
the simplest possible instrumentation, so that the student involvement
is purely with the engineering principles being taught. A complete
instruction manual is provided describing the apparatus, its
application, experimental procedure and typical test results.
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