Labels:dialog box | hakham | monitor | stairs | web site OCR: Development of the Bell Footing Overview Shortly after the previous method was adopted Mr History of footings Simpson worked with Mr Duderstadt on developing Bell Development of ithe loading by bearing Footing method of obtaining full support of pile Pre-molded bell on the soil at the bottom of the pile by belling out the shaft footings 45 degree angle This was accomplished with Review larger shaft diameter and lowe ering man to the bottom of References the shaft T hand dig the bells. Horses and mules soon TEST replaced men turn the capstan used to drill the holes In 1938 the drill rig was adapted to use ste am engine Later truck-mounted rig was developed by Mr. August Beck of San Antonio PREY 24 NEXT> tootnas lowering PREV
