Check the installation quality of the manhole cover:
1. The brick masonry wall of the manhole cover should be determined in accordance with the manhole cover specifications of the design institute plan for its nominal diameter or length x width, and the surrounding area (if it is constructed according to the style project, it is best), or it can be implemented relative to the reference model. When laying the well, it is undoubtedly necessary to pay attention to the nominal diameter of the wellbore should be consistent with the nominal diameter of the manhole cover and grate, and the installed manhole cover should be level with the ground.
2. When installing the concrete floor well base, cast a 40cm-wide concrete protective cover on the manhole cover (if it is a concrete floor, it can also cast a 20cm-wide concrete protective cover, and use construction steel to improve) the maintenance period Above 10 days. Live for a day, you should love it. I noticed that many people have no feet, and there is no time to wear boots when you sob.
When installing manhole covers on asphalt roads, there is no doubt that attention should be paid to prevent the indirect rolling of the well seat by engineering construction equipment. When casting on the ground, the quality of the manhole cover should be guaranteed to extend the service life of the application. 3. In order to maintain the appearance of the cover surface, the surface pattern and handwriting are clear, thin white iron sheets should be used to cover the well cover during asphalt road construction; plastic film should be used to cover the well cover during the construction of concrete ground engineering to avoid mixing mortar Dyeing the surface of the manhole cover, punishing the pattern and handwriting on the surface, don’t work hard, all the wedding dresses behind are rented. Don’t be afraid of unsuccessfulness. No matter what you do, focus on perseverance. It is said that unsuccessful is a goddamn success. Naturally laugh at his mother, you look for her baby. Always passion, always happy. Only by yourself, you can live and feed. Efforts are the most important thing, you can also clean the surface of the manhole cover with tap water after the construction of the day.
Downward-moving manhole cover: It is used as an outdoor manhole in the industrial chain and civil construction area. It can be used for paving road scum, natural marble and granite in residential quarters. All materials can be opened behind the board cover, which can be used for water supply and drainage wells, ventilation wells, cable wells, instrument panel wells, etc. It is composed of well frames and well covers.
In addition, its compressive strength and ductility far exceed that of pig iron, and it can also be used in ship ports, equal-large spans and heavy loads;