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住户在二次装修中的错误作法主要有以下几个方面。1.在预制多孔板上凿洞打眼,这是不行的,因为多孔板的孔与孔之间只有40mm 厚的肋,如果在多孔板上凿洞至少要破坏一个肋,若多孔板宽50cm,一块板的荷载就只能由31.6 cm 宽的板来承担,这就造成了板的超载。2.在原有的地面上再做找平层,粘贴大理石、花岗岩,若粘结层厚度为3cm,石材厚度为2 cm,每平方米地面的自重增加了1.25kN/m~2,大大超过未经房屋安全鉴定的、其装饰材料自重不得超过400N/m~2的规定。
Households in the second decoration in the wrong approach mainly in the following areas. 1. Drilling a hole in a prefabricated perforated plate does not work because it has only 40 mm of ribs between the hole and the hole in the perforated plate. If at least one rib is to be bored in the perforated plate, if the perforated plate is 50 cm wide, The load on one board can only be borne by a 31.6 cm wide board, which results in overloading of the board. 2 in the original floor leveling layer, paste marble, granite, if the bonding layer thickness of 3cm, the stone thickness of 2 cm, the weight per square meter of the ground increased by 1.25kN / m ~ 2, greatly exceeded without Housing safety appraisal, the weight of their decorative materials shall not exceed the provisions of 400N / m ~ 2.