Buckling Resistance Tester for Manhole Bases
Standards
BS EN 14830
BS EN 13598-2, Annex C
Application
Buckling Resistance Tester is used to simulate the conditions when manhole is buried underground and check its resistance to the force from underground water.
Features
High efficiency vacuum system provides a wide negative pressure range of -70kPa to 0kPa .
Specialized end caps are suitable for various of pipe samples.
Cantilever lifting structure is introduced to expand the testing space, making a wide range of manholes from Φ315mm to Φ1200mm.
Deformation sensors adjustable to different directions, are applicable to the conditions of uneven samples or reinforced sample surface.
Industrial control terminal and colorful touch screen display provide more information to operator, e.g. pressure-time and deformation-time curves, leakage detection. Once there is leakage or unstability on sample, vacuum pump will stop working automatically.
Test data can be exported through USB port.
Test data will be saved automatically in case of abnormal interruption. Test time will be continued after system up to setting pressure.
Technical Parameters
1. Manhole diameter range: 315mm～1200mm
2. 
Vacuum pressure range: -70kPa～0
3. Pressure control accuracy: 2%
4. Deflection range: 0mm to 75mm
5. Deflection measuring accuracy: 0.1mm
6. Timing range: 0 to 9999h
7. Timing accuracy: 1s
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