A timber beam in an existing building is 200 mm wide and 380 mm deep and is simply supported at the ends of 4 6 m span. A) Calculate the safe uniformly distributed load for the timber alone if the bending stress must not exceed 7 N/mm2. B) It is proposed to strengthen the beam to enable it to carry a uniformly distributed load of 150 kN by bolting two steel plates to the beam as shown below. Calculate the required thickness t of the plates if the plates if the maximum permissible stress for the steel is 140 N/mm2 and the modular ration is 24
Extracted text: A timber beam in an existing building is 200 mm wide and 380 mm deep and is simply 1) supported at the ends of 4 6 m span. A) Calculate the safe uniformly distributed load for the timber alone if the bending stress must not exceed 7 N/mm2. B) It is proposed to strengthen the beam to enable it to carry a uniformly distributed load of 150 kN by bolting two steel plates to the beam as shown below. Calculate the required thickness t of the plates if the plates if the maximum permissible stress for the steel is 140 N/mm² and the modular ration is 24 200 mm 300 mm 380 mm