In the 1950's, 60's, and 70's a lot of new homes where built with basement access via a steel stair casing and an overhead lift up door.
Over the past 50-70 years the steel has corroded. It may be rusted and leaking. The overhead doors may not stay open anymore and you have to prop it up with a hockey stick. You are now left with a rusty dangerous basement access.
We dig all around the steel units and remove the entire casing. We then replace the it with a new set of steel stairs, attach it to your basement wall and backfill. A new top is installed with 2 doors.