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Archive for September, 2008

Arc Length of a Segmental Arch

In my article on building a sunburst I described how to find the circumference of a circle given a specific radius. I then divided that circumference in half, because I was working with a half-round arch. This gave me the length measured along the arches curve, otherwise known as the arc length. Finding the arc length of a segmental arch is a little more difficult, but a construction calculator makes it incredibly easy. Read the full article…

Moisture Content & Wood Movement – Toolbox

Wood is hygroscopic, which means its moisture content (MC) will fluctuate based on the relative humidity (RH) of the surrounding air. As humidity increases, the MC increases, and the wood expands, and as the humidity decreases, MC decreases, and the wood shrinks. This relationship is referred to as equilibrium moisture content (EMC), and can be accurately predicted. Read the full article…