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What requirements should be paid attention to before manhole cover installation

编辑:123木头人 时间:2017-03-26 Source: Unknown Editor: 123 Woodman Time: 2017-03-26
What requirements should be paid attention to before manhole cover installation

First, before installing the manhole cover, first confirm the well ring and manhole cover to be installed according to the use requirements, load levels, markings, etc., so as to avoid incorrect installation and unnecessary losses.
What requirements should be paid attention to before manhole cover installation
2. The manhole cover of ultra-polymer composite material is directly injection-molded by using polymer composite material through advanced flat twin-screw plasticization and mixing. The well ring is designed with its use characteristics and material cost in mind. At the connection part of the well ring, the thickness of the well ring is only 20mm. Therefore, when installing the well ring, it is strongly required that the inner opening of the well cover and the wellhead must be the same size, and the inner opening of the well ring and the wellhead must be aligned. When it is suspended, the well cover is broken when the well cover is under heavy pressure. The well cover sinks, cannot be used, or causes a traffic accident. Therefore, when the well ring is installed, if the well ring and wellhead are found to be offset, Correct in time; after the well circle is aligned with the wellhead, cover the well cover, and spread 1 cm thick fine sand on the well cover. The well circle is compacted with beads, fixed and leveled, and then concrete is poured to make the surface of the concrete and the well circle level with the road surface. Qi. After the concrete is poured, open the manhole cover, clean the surface of the manhole cover and the sand and sand that fell into the seams of the manhole cover, and then cover the manhole cover. A prohibition sign is placed around the manhole cover. The concrete or asphalt pavement is allowed to be constructed after the concrete is cured.