Basement Entrance Brochure Basement Entrance Sizes How To Measure Consisting of a pre-cast concrete stairwell and a Bilco basement door, a pre-cast Basement Entrance is the fastest and most economical way to add convenient, direct basement access to any home. Ideal for both new home construction and older home renovations. Means Pre-Cast can deliver and install your new Basement Entrance in just a few hours. Pre-cast in one piece 5,000 P.S.I. Concrete Strength Ideal for Below Grade Reliability and Durability Perfect for poured concrete foundation walls 1st choice for new construction 1st choice for replacing existing structures on older homes Thousands installed to date