Differance between Manhole and Vault 1

[beghtesady]

Can any one add to the list below as to the differance betw
een a manhole and a vault? Thanks

1.A manhole is always underground and the equipment within it is usually submersed in water.
2.Access to the manhole is through an opening from above ground.
3.Manholes are not ventilated.

1.A vault is installed either below or above ground and is not intended to be under water.
2.Access to the vault is through a door.
3.Vaults are usually vented.

 

[davidbeach]

How about just that manholes have round access lids, much smaller than the top of the box, and vaults have rectangular access hatches, up to the size of the box.

I have one project in design presently where I am using both manholes and vaults. Manholes where I have to have them in the traffic lanes, and vaults where they can be located off the roadway. Same box, different lid. Manholes get dead-break separable connectors, vaults get load-break elbows since the doors in the lid provide enough space for hot stick operation of the elbows. Both are assumed to be subjected to flooding, particularly during the spring thaw. The manholes will get plowed regularly, but the vaults could wind up under serveral feet of snow.