HPM5/1 Stress Grading of Timber Joists

HPM5/1 Stress Grading of Timber Joists

This experiment comprises a technical manual, which contains details of the selection of a timber beam and setting up for a four point loading test. A set of three dial gauges is required to measure the curvature of the beam in the central region of constant bending moment.

Point loading is applied using the Dual hydraulic ram system (HPM3a – Not supplied). This system allows pressure to be applied simultaneously from one pump.

The HPM1 Test Frame (not supplied) is used to test the cast beam and the HPM2 accessories (not supplied) are used to mount the beam correctly within the HPM1 frame.

HPM5/1 Stress Grading of Timber Joists

HPM5/1 Stress Grading of Timber Joists

  • Comprising a detailed Instruction Sheet for the preparation of timber joists, and methods of relating stress grading and deflections.
  • Must be used in conjunction with the 300 kN Universal Testing Frame (HPM1 – not supplied) and its standard Set of Accessories.
  • Hydraulic Ram System HPM3 required (not supplied)
  • Concrete test beam deflections measured using a dial gauge, mounted on a large magnetic base (not supplied)
  • 2 year Warranty
  • Study of commercial grading of timber for structural design and construction.
  • Effect of moisture content