Requirements for composite manhole covers during construction. During the construction operation of the composite manhole cover, in order to ensure the construction quality and use efficiency of the manhole cover, certain construction requirements are required, but many users do not understand its specific operation, and the specific requirements will be introduced next.

1. Strengthen the management and inspection mechanism of materials, resolutely return all kinds of unqualified construction materials, and inspect manhole covers and seat materials that are not used in time can only be used under the premise of ensuring strength. It is forbidden to use cement mortar to replace cement concrete or to use back plug cement mortar to level the seat grout.

2. Strengthen construction maintenance and formulation management. Short curing time, the seat grouted concrete has not reached 70% of the design strength and can be put on the vehicle, the curing is not timely after construction, and frost is encountered during the curing process, etc. are the causes of the disease.

3. Explain the installation process to the construction personnel, and strictly implement the construction technical specifications and relevant construction technical requirements for water supply and drainage pipeline projects. Strengthen the awareness of the strength of the tamped backfill soil around the inspection well, strengthen the compactness of the seat slurry of the inspection well seat, and meet the fluidity and vibration compactness requirements of the seat slurry cement concrete pouring. In rainy days, construction must be stopped when there are no rain-shielding facilities, and construction can only be carried out if the temperature on the construction site is higher than 10°C.

4. Strengthen the later maintenance work. If the settlement of the road inspection manhole cover and the occurrence of diseases on the surrounding roads are found, they should be dealt with in time to prevent further expansion of the diseases.

During the road construction process of the composite manhole cover, the elevation is strictly controlled to ensure that the inspection manhole cover and seat are consistent with the elevation of the construction design road or the longitudinal and transverse slopes of the road surface, so as to effectively prolong the service life of the manhole cover.