SafeTbag PTB Load Test Water Bags have been designed to test large and flat areas such as platforms, floors, walkways and bridges. In contrast with solid weights, these water bags are easier to use, keep and carry and reduce dependence on manpower. PTB water bags could be manufactured in different capacities like 3 m3, 5 m3 and 10 m3. Other than these, custom size water bags will also be produced upon clients’ special requirements.