Inspecting watertightness of TAI-FLEX at straight and horizontal position.
Watertightness test for straight and horizontal installation. Repeating elasticity test for DN 1200mm
Inspecting watertightness of TAI-FLEX at subsiding position.
Watertightness test at subsiding position repeating subsidence test for DN 1200mm
Inspecting retaining force of TAI-FLEX
Retaining force test
DN 900mm
Inspecting water head loss of TAI-FLEX
at each installation conditions
TAI-FLEX DN 75mm
WFF type bent 27゜
Inspecting water flow inside of TAI-FLEX
Flow speed 0.08m/sec.
DN 75mm
Purpose: Inspecting watertightness of TAI-FLEX in horizontal, straight and subsiding installation.
Test Method: Install TAI-FLEX on the test equipment horizontally at straight position.Then load water pressure at straight and susiding position.Observe for water leakage and any other possible problems.
Purpose: Inspecting watertightness of TAI-FLEX under repeating elasticity and subsidence.
Test Method: Install TAI-FLEX on the test equipment and repeat shrinkage,elongation and subsidence for prescribed times under water pressure. Then observe for water leakage and any other possible problems.
Purpose: Inspecting retaining force of TAI-FLEX.
Test Method: Install TAI-FLEX to test equipment and put tensile strength of 0.3d tonf(*) at the both ends of TAI-FLEX by hydraulic cylinder. Then watch if TAI-FLEX breaks or anything wrong causes.
* d: nominal diameter (mm)
Purpose: Inspecting water flow inside of TAI-FLEX
Test Method: Use colorless acrylic TAI-FLEX Single type DN 75mm enable to watch water flow by visual inspection. No stagnating of water was confirmed inside of TAI-FLEX at straight and bending condition.
Purpose: Inspecting earthquake resistance of underground TAI-FLEX.
Test Method: Use equipment nearly reproduced discontinuous earth, for example a boundary of earth layer and conjuction part between structures. Shaking test was conducted on condition with earthquake acceleration of over 818 gal, which is the same earthquake acceleration occured in Great Hanshin-Awaji Earthquake. And any significant strain nor leakage was observed.
Purpose: Inspecting water head loss of TAI-FLEX.
Test Method: Use TAI-FLEX DN 75mm, inspected water head loss at straight and subsiding installation.
Flow Speed 0.4m/s...at straight 0.0001MPa, at subsiding 200mm 0.0001MPa
Flow Speed 0.6m/s...at straight 0.0002MPa, at subsiding 200mm 0.0002MPa
Flow Speed 1m/s...at straight 0.0005MPa, at subsiding 200mm 0.0006MPa
It is confirmed that pressure loss of TAI-FLEX is negligible.
Study of Liquefaction for TAI-FLEX at Science and Technology Agency
Equipment used for inspecting performance of TAI-FLEX under liquefaction ground
TAI-FLEX approved performance to ground movement (after test)
Product development on sufficient data
At the design stage, we analyze and simulate using finite-element method.
TAI-FLEX
TOP OF PAGE