Central television, pole and wire, and switching station antennas, as well as satellite dishes, are also included within this category code. A raised, double wood member attached to a properly flashed wood base plate that is anchored to the roof deck. It is used to relieve the stresses of thermal expansion and contraction in a roof mebrane where no expansion joints have been provided. Argon Inert, nontoxic gas used in insulating windows to reduce heat transfer. A class of relatively strong organic solvents which contain an unsaturated ring of carbon atoms.
Examples are benzene, toluene and xylene.
The ashlar units are properly bonded, having sawed, dressed or squared beds, and joints laid in mortar. Often the unit size varies to provide a random pattern, random ashlar. It is used as a waterproofing agent, sealant or pavement. ASTM American Society for Testing and Materials. Please click here to enter the article Environmental loads and construction degradation .