electrical engineering calculator self made

The sagging can be calculated by modifying eq.1 to The horizontal forces in the supports can be calculated as The vertical forces in the supports can be calculated as

= 38.9 m Example - Known Tension at the Supports - Calculate Sagging and Length of Cableįor a 30 m long cable with uniform load 4 kN/m the resulting tension in the cable at the end supports are 100 kN. The resultant force acting in the supports can be calculated as The vertical support forces can be calculated as The horizontal supports and mid-span cable forces can be calculated as = 124 ft Example - Uniform Cable Load, SI unitsĪ cable with length 30 m and a sag 10 m has a uniform load of 4 kN/m. The resultant forces acting in the supports can be calculated as The vertical forces at the supports can be calculated as S (m, ft): Example - Uniform Cable Load, Imperial unitsĪ cable with length 100 ft and a sag 30 ft has a uniform load 850 lb/ft. Uniformly Loaded Cables with Horizontal Loads - Calculator Note that the equation is not valid when h > L / 4. The length of the sagged cable can be approximated to R 1,2 = resultant force at the support (lb, N) The resultant forces acting in the end supports - and in the direction of the cable close to the supports - can be calculated as R 1y = R 2y = vertical support forces (lb, N) The vertical support forces at the end of the cable can be calculated as Q = unit load ( weight) on the cable (lb/ft, N/m) R 1x = R 2x = horizontal support forces (lb, N) (equal to midspan lowest point tension in cable) The cable follows the shape of a parable and the horizontal support forces can be calculated as Uniformly Loaded Cables with Horizontal Loads The equations below can also be used for cables only loaded with their own weight as long as the sagging height (h) vs.

Electrical engineering calculator self made