Within each species of wood there are two grading systems, one based on structural strength and stiffness, and the other based on appearance. Appearance is graded visually based on size and positions of knots and other defects, or by machine that flex each piece of lumber and measures the structural properties directly. Types of wood construction Because of its large member dimensions and spans, heavy timber construction is best suited to buildings with regular repetitive bays. Light-frame construction, with its small and close member spacing, adapts readily to even the most intricate spaces and architectural forms. The drying and shrinkage of wood is not uniform.
Wood shrinks very little along the length of the grain.
It shrinks even in the radial direction of a cylinder log, and it shrinks even more in the tangential direction of the log than in the radial. By Architectural Design Standards. As a result of the October floods that devastated San Antonio, approximately 135 families lost their homes in the South East part of our city. Since then, the City of San Antonio has been able to buy out some of these residential properties which were affected by the floods, which resulted in providing some relief to the flood victims. On Saturday, February 27, SADA joined the City and other housing agencies and financial institutions to host a meeting with the homeowners who lost their homes to the flood.