I have two questions regarding architecture
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I have two questions. 1. For a steel platform installed in a factory building with lightweight walls surrounding it, how can design measures be taken to ensure that pressure is released through the walls first, rather than through the steel platform, during pressure release? 2. On the schedules for building codes, for ordinary clay brick walls with a component thickness of 120 mm, why is the fire resistance rating 2.5 hours when used as load-bearing walls, while it is 3 hours when used as non-load-bearing walls? For aerated concrete block walls, with a component thickness of 100 mm each, there is a significant difference in fire resistance between load-bearing walls and non-load-bearing walls: the fire resistance of load-bearing walls is 2 hours, while that of non-load-bearing walls is 6 hours.
The thickness of all components is 120; why then does a load-bearing wall have a fire resistance rating of 2.5 hours, while a non-load-bearing wall has a fire resistance rating of 3 hours? Firstly, there are rebar inside load-bearing walls; these rebar have a low fire resistance rating and tend to deform. Once the load-bearing rebar deforms, the load-bearing wall loses its strength ； Secondly, load-bearing walls bear the pressure of the entire building; when exposed to the same heat and reach their limit, they are prone to deformation under such pressure
This post was last edited by hesonchang214 on 2015-12-22 at 19:41. Load-bearing walls are required to bear weight, so the requirements for them are stricter; non-load-bearing walls have a lower fire resistance rating. In terms of design, it is necessary to ensure that pressure is released first through the walls rather than through the steel platform; this is likely related to the arrangement of the equipment. The shock wave from an explosion spreads evenly in all directions; whoever is hit first has to release that pressure first, otherwise they will have to endure the effects of the explosion.