What type of I-beam should be used for span 8m? Beam load is mainly 10cm thick concrete floor
The span 8m should be made of 20# I-beam @1000, and the ends should be solid. The main load is 10cm thick concrete floor.
I-beam is also called steel girder (English name Universal Beam). It is a strip of steel with an I-shaped section. I-beam is made of ordinary I-beam and light i-beam. It is a section steel with an I-shaped section.
20# I-beam @1000, both ends should be solid.Floor maintenance and dismantling requirements:The concrete strength of the 1, in the span of 8 meters above is more than 100%, 8 meters and 8 meters above 75% can tear open mode; the concrete strength is not less than 1.2MPa on the floor can be people and construction. (usually in the water after 24 hours of strength can reach more than 1.2MPa, spring, summer and autumn winter days under normal maintenance of 7~9; 10~15 in normal curing days to open mode).2, under normal maintenance, not less than 2 times a day, each time to ensure that the floor has 11~16 minutes of water.3, concrete moisture maintenance for its strength growth and performance improvement is very important, especially early proper maintenance can avoid surface dehydration, and greatly reduce the initial expansion of concrete cracks. So, the necessary maintenance of concrete placement after the floor (generally not less than 24 hours) must be guaranteed, such as in the actual construction, the rush to catch the time and watering will affect the elastic line and construction personnel, construction must adhere to the coverage of straw sacks or wet curing properly maintained for a week or so.4, to the floor to the top of demolding strength reached 75%.
