It is designed to determine the swelling pressure developed by a soil specimen moulded to desired densities at known moisture contents, when soaked in water. The load applied to restrain the swelling is transfered to a load measuring proving ring through a perforated swell plate and a load transitor bar. The proving ring is attached to the lead screw of load frame, hand operated, designed for the purpose. The load frame has a worm gear arrangement for initial setting and for subsequent volume change compensation. A soakingtank is provided for saturating the specimen and the base of the mould has channeis and radial grooves with connecting holes.

It is designed to determine the swelling pressure developed by a soil specimen moulded to desired densities at known moisture contents, when soaked in water. The load applied to restrain the swelling is transfered to a load measuring proving ring through a perforated swell plate and a load transitor bar. The proving ring is attached to the lead screw of load frame, hand operated, designed for the purpose. The load frame has a worm gear arrangement for initial setting and for subsequent volume change compensation. A soakingtank is provided for saturating the specimen and the base of the mould has channeis and radial grooves with connecting holes.