Composite manhole cover 850x850 with recessed frame and round cover is designed with a popular size and is widely used in bridge and road projects, residential areas, and urban areas.
Structure of composite manhole cover 850x850 with recessed frame and round cover
Composite manhole cover 850x850 has 2 main parts: the cover and the frame, which are manufactured at Viet A Composite factory using 2 popular technologies today: manual casting and machine pressing.
Cover
The cover is designed in a circular shape to help distribute force evenly, fixed to the frame with 2 bolts or using a hinge on one end and a bolt on the other end
The cover can be removed or opened thanks to the hinge for cleaning or checking the manhole
The surface of the manhole cover is patterned with anti-slip or with the customer's logo
The cover is the main load-bearing part of the manhole cover set, so the bottom surface is designed with ribs to withstand the load depending on the required load.
Frame
The frame is designed in a square shape, with a lip to support the cover
The main function of the manhole cover frame is to fix the cover, avoiding displacement during use
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The composite manhole cover's dual-hinge design and ribbed load-bearing structure demonstrate thoughtful engineering for urban infrastructure. For more insights on material innovations in civil engineering (and their cultural impacts), explore - my project examining technology through interdisciplinary lenses.
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