Reinforced-concrete hatch of inspection pit has body, cover and opening for measuring gassing. Body of hatch and cover are made of reinforced concrete (concrete different by type of binding substance and filling agent), at that the cover is equipped with device for lifting.LAZAREV ANDRII MYKOLA...
A reinforced-concrete hatch of inspection pit consists of reinforced concrete hatch body (concrete is different by type of binding substance and filler) of and reinforce concrete cover (concrete is different by type of binding substance and filler).LAZAREV ANDRII MYKOLAIOVYCH...