Water Screw or Archimedean screw
The water screw, popularly known as the Archimedes' screw and also known as the screw pump, Archimedean screw, or Egyptian screw, is a machine used for transferring water from a low-lying body of water into irrigation ditches.
A layer of clay 10 m thick is overlain by a deposit of sand 15.2 m thick to the ground surface. When the water table is at ground surface level, the saturated unit weight of the sand is 21.2 kN/m3, and its dry unit weight is 18.2 kN/m3....
2.7 The Howe truss shown carries the following loads:
Roof dead load and live load Po = 18 kN Ceiling and fixtures dead load P = 6 KN
Given: S = 1.8 m, H = 2.7 m
a) Solve for the force (kN) in the member FG due to the combined loads P and Po.