沉箱式卫生间的施工方法是这样的：1.下沉地面先做两道防水一为刚性二为柔性。A:并且.做48小时闭水试验，B：在立管与卫生间沉箱底板最低处开直径20毫米的圆孔，用20直径管插入开孔部位4毫米深度。该疏水管道指向卫生间沉箱底板的中心位置，便于安装卫生间沉箱防水器，C：用水泥砂浆在不漏水的防水涂层上做一层保护层，要求四周高，安装防水器本体的位置最低，水泥砂浆保护层干透后---2.安装上、下水管。安装防水器本体，并在本体上覆盖鹅卵石保证沉箱积水能够通畅排向立管疏走3.填沙土堆高到比地面低5公分压实。4.铺水泥填平。5.再做好卫生间门槛处的防水。6.铺地面砖。
The construction method of caisson toilet is as follows: 1. First, make two layers of waterproof for the sinking ground, one is rigid and the other is flexible. A: And. Do 48 hours closed water test, B: open a round hole with a diameter of 20 mm at the lowest part of riser and toilet caisson bottom plate, and insert a 20 diameter pipe into the hole with a depth of 4 mm. The drain pipe points to the center of the baseplate of the toilet caisson, which is convenient for installing the waterproof device of the toilet caisson. C: make a protective layer on the watertight waterproof coating with cement mortar, which is required to be high around, with the lowest position for installing the waterproof device body. After the cement mortar protective layer dries completely -- - 2. Install the upper and lower pipes. Install the waterproof device body and cover the body with pebbles to ensure that the accumulated water in the caisson can be drained to the riser smoothly. 3. The sand filling soil pile is 5 cm higher than the ground and compacted. 4. Pave and level with cement. 5. Waterproof at the door sill of the toilet. 6. Floor tiles.