Manhole Covers, Problems and Solutions

Document Type : Original Article

Authors

1 , M.Sc., Student, School of Civil Engineering, College of Engineering, University of Tehran, Iran.

2 Assistant Professor, School of Civil Engineering, College of Engineering, University of Tehran, Iran

3 CEO, Tehran Engineering and Technical Consulting Organization, Municipality of Tehran, Iran

Abstract

Manhole covers are one of the basic needs for a city which are used to protect our underground facilities from external dangers and also protect our citizens from the probable hazards related to these facilities. These covers are located in paths like sidewalks and streets in a city. Their presence in such places may create specific problems and hazards, which ignoring them and not trying to solve or prevent such hazards, may result in monetary loss and citizens’ injury or death in some cases. Some of these problems come from the cover itself, such as noisy manhole covers or cover’s removal because of inappropriate installation. Some others are related to the facilities, like the bad smell coming from sewer manholes or explosion in a manhole because of intolerable pressure coming from the gases and vapors resulting cover’s shooting out to the street or sidewalk. There are also some problems which are made because of an external matter like iron covers being stolen and a deep hole remains which is a great danger for a pedestrian or cyclist. In this paper we’ve tried to describe covers and illustrate their loading conditions, also we’ve analyzed common materials used to produce covers and finally common problems and hazards related to these covers are discussed and appropriate solutions, which are taken from different countries experiences, are presented for each.
 
 
 

Keywords

References

 
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