Features
Tesca Roof Truss Apparatus is used to measure the deformation in elements of  roof truss. Whenever a load is applied to a roof truss, its members undergo a strain.  

This unit consists of a base structure which provides the support locations for the roof truss. Three  metallic elements form a roof truss in a triangular shape. Load is applied from the top of the roof truss  structure via a hanger. Each member has a dial gauge connected to it which shows the deformation  produced due to applied load in each member.  

This apparatus is used to measure the deformation in elements of roof truss. Whenever a load is  applied to a roof truss, its members undergo a strain.  

Tesca Roof Truss Apparatus consists of a base structure which provides the  support locations for the roof truss. Three metallic elements form a roof truss in a triangular shape.  Load is applied from the top of the roof truss structure via a hanger. Each member has a dial gauge  connected to it which shows the deformation produced due to applied load in each member.  

Specifications
Evaluation of co-planar forces in the struts and tie of a basic roof truss  
Effect of changing tie bar length 
The apparatus consists of two rafter struts and a restraining tie mounted on a self contained,   bench top base  
Both struts and tie incorporate linear, direct reading spring balances to measure forces  
Loading at the hinged apex by load hanger  
The tie length, and hence angle of truss, variable  
Struts and tie re-adjustable to original lengths  
An instruction manual for student and lecturer provided  
Set of weights 

Experiments

1. To compare experimental values of the forces in the struts and tie of a basic roof truss with   theoretical predictions  
2. To observe the effect of changing the tie bar length