Mechanical Systems

A Difference Between Structural and Systems Technology

That’s a picture I took in a church attic some time ago. The wood members in deep shadow are the purlins and plank deck of the roof, and are fairly ordinary structure for a building constructed circa 1900. The brightly-lit piece of wood is a support for the electric wiring, and the wiring is of …

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Thousands of Years of Western Architecture

The management is redoing the hallways in our apartment house. They’ve decided to hide the cable TV co-axial cables within a plastic crown molding. The installation is, as seen above, in progress. The original wood crown moldings were based on classical forms and were a way to hide the cracks that often develop in plaster-covered …

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