Manhole Cover construction
2023-09-04 10:44:35
At present, the manhole cover lifting during asphalt paving generally adopts the post-paving removal method or the device lifting method.
1. Breaking method after paving: Before paving the first layer of asphalt, cover the pre-lifted wellhead with a steel plate. After the first layer of asphalt is paved, cut out the water stabilizing layer above the steel plate and lift the manhole cover. Or make a mark, wait for the second and third layers of asphalt paving to be completed, and then dig out the manhole cover above the steel plate to steadily lift the manhole cover.
2. Device lifting: Before paving the first layer of asphalt, install a lifting device above the wellhead. After the first layer of asphalt is paved, take out the lifting device and lift the manhole cover. When paving the second layer of asphalt, lift the manhole cover with the same steps as above.