The equipment allows measurement of deflections and axial forces in pin-jointed truss members when a redundant member is added.
A wall mounted truss frame has a pinned upper joint and the lower joint a roller bearing on a support. There are 7 truss members and an extra member with an adjustable length. Load is applied by a load hanger and weights. Deflection is measured by an indicator. Each truss member has a strain gauge which is wired to form a full bridge with temperature compensation and zero adjustment in the strain indicator.
|Member approximate cross-section||:||42 mm2.|
|Members with strain gauge bridge||:||8 ea.|
|ST 131 Dial Indicator||:||1 ea.|
|ST 152 Strain Indicator||:||1 ea.|
|Weights||:||1 lot, total 50 N.|
|Power supply||:||220V 1Ph 50Hz or as required.|
Dummy member with strain gauge : 1 ea.