JLC ??MAY 1992 Careful detailing and an innovative single-ply membrane solved a common construction problem by Bill MacCurdy Recently I was in my booth at a local home show when a couple approached me about building a house for them on top of a mountain. After showing them some of my work and visiting the steeply sloped site, I was given the job. The plans called for the foundation to be excavated, for block walls to be layed and the cores filled, and then for the entire excavation to be backfilled and compacted, with concrete slabs poured on top. There were eight level changes in the house, and the owners had decided to use hardwood floors throughout.