【Daily Discussion】Utilities - Civil Engineering - 20210408

A. Remove the rear support first. B. Remove the formwork first and then the support formwork. Explanation: The order of removing formwork is as follows – those that were installed later should be removed first, while those installed earlier should be removed last. Non-load-bearing elements should be removed first, followed by the load-bearing elements

②Order of removing formwork: The order for removing formwork is generally to remove the non-load-bearing formwork first, followed by the load-bearing formwork； Side panel first, then bottom panel. Follow the principle of removing components after the structure is supported: first remove the non-load-bearing parts, then the load-bearing parts, and work from top to bottom. When removing formwork, it is strictly prohibited to use hammers or crowbars to force removal. When removing the formwork, workers should stand in a safe location to avoid accidents; only after all of the formwork for that section has been removed may the formwork, accessories, supports, etc. be taken out and stacked. Removed formwork, accessories, etc. must not be thrown; they should be passed on by someone else and stacked in designated areas. It is also necessary to clean them up promptly, repair them, and apply a sealant to them so that they can be used again. When removing the vertical formwork, it should be done from top to bottom ； When removing the supports under beams with a large span, it should be started from the middle of the span and removed towards both ends. When removing the formwork under beams and floor slabs, loosen the wooden wedges or lower the supports first, then remove it piece by piece or in sections. The removed formwork should be lowered to the ground using ropes; it must not be thrown from a height. The removal of support columns for multi-story floor slabs shall be carried out in accordance with the following requirements: while concrete is being poured for the upper floor slab, the formwork support columns for the lower floor slab must not be removed; only a portion of the support columns for the even lower floor slab may be removed. Support columns must be retained under beams with a span of 4 meters or more, and the spacing between these columns shall not exceed 3 meters. During the removal of formwork, if it is found that the concrete poses any issues affecting the structural quality, the removal process should be temporarily halted. It can be removed only after treatment. The sequence for removing the formwork from the staircase is step slabs – side panels of the steps – and the bottom slab of the steps. Home – Lifestyle Guide – Fashion, Home & Decor: Things to Consider When Demolishing a House. After purchasing an old house, it is often necessary to carry out renovations. If the layout of a house changes, demolition becomes inevitable. Many people think it’s a very simple job that doesn’t require any specialized skills. This is a very wrong idea.