【Weekly Topic】【Civil Engineering Version 20170609】
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Participation reward: 2 Wealth. Correct reward: 6 Wealth. For ceiling installation in building decoration projects, the correct construction methods are as follows: A. The main rafters should be arranged parallel to the shorter side of the room. B. The distance between the suspension rods and the ends of the main rafters should not exceed 300 mm. C. Gypsum boards should be fixed in their natural state, with fixing starting from the edges of the board and moving towards the center. D. The long sides of the gypsum boards should be installed parallel to the main rafters, while the short sides should be aligned parallel to the secondary rafters. E. When the length of the suspension rods exceeds 1500 mm, reverse supports should be installed. 【Answer】BE
For building decoration and ceiling installation projects, the correct construction methods are (BE). A. The main joists should be arranged parallel to the shorter side of the room. B. The distance between the suspension rods and the ends of the main joists should not exceed 300 mm. C. Gypsum boards should be fixed in their natural state, with fixing being carried out from the edges of the board toward the center. D. The long sides of the gypsum boards should be installed parallel to the main joists, while the short sides should be aligned parallel to the secondary joists. E. When the length of the suspension rods exceeds 1500 mm, reverse supports should be installed