In the installation of the top of the steel structure workshop, the gutter (colored steel or stainless steel) is usually placed on the eaves to form an outer gutter. The distance between the eaves and the column distance is taken, that is, the eaves are part of the main frame, and the typical eaves structure is connected by C-type steel purlin between the eaves. The coating that has made up should not be placed too long, coating should be made up that day. The use of thickeners shall be carried out in accordance with the rules specified in the written notice and shall not be arbitrarily increased.
The environmental measurement and absolute humidity of the top coating should be in accordance with the requirements of the coating product indication. When the product indication does not require, the environmental measurement should be between 6 ℃ and 39℃, and the absolute humidity should not be greater than 86%. There should be no condensation when painting components; Cover from rain within 4 hours after painting. The parts that are not coated as shown in the steel structure installation drawing shall not be coated. Welding seam and high-strength bolt conflict surface, temporary coating, to be completed after the site construction, and then the welding seam and high-strength bolt joint brush anti-corrosion coating.
The roof of the steel structure workshop is installed, and the eave column bears the vertical load and wind load of the light wall transmitted by the C-type steel wall beam, and the eave beam mainly bears the load of the gutter water or snow load. The section of each eave component (eave column, eave beam) is usually made of rolled I-steel or high-frequency H-beam, and the section size is determined by the calculation of bearing capacity. The eave column and eave beam are shown as a whole, and the end is fixedly connected with the rigid frame column, which is calculated as a cantilever member. Under normal circumstances, the eaves of light steel plant structure bear less load, and the section of 200 high frequency welding H beam is mostly selected.
