The Architecture Puzzler
Created by Dave Guadagni
Solution to Last Week's Puzzler
Architecture Puzzler #95
Sand is a common abrasive used for removing lead paint from steel framing and interior brickwork. In recent years, a second organic material has been gaining favor as an abrasive for this use. What is this alternative abrasive and why is it gaining favor?
Crushed walnut shells are sometimes used as an abrasive because they weigh less than sand and therefore cost less at hazardous waste disposal sites.
Dave Guadagni, AIA, is an architect with Robertson/Sherwood/Architects
Quizzical Pursuit is Copyright 2002, Dave Guadagni.
Paint once desirable, no longer welcome.