A pipe, usually of structural clay, for carrying water from a drainage tile to a drain or sewer.

A small valve used to drain fluid from a pipe, radiator, vessel, etc.

Wood from trees tapped for resin. Although appearance may be affected, strength is usually not.

A blister or small bubble in a fluid or in a material (such as glass) that has solidified.

A chemical or photochemical reaction which whitens or removes color from a surface.

A stand of tiered planks providing undivided space for seating.

A steel door which has been fabricated to resist dynamic stresses caused by blast pressures up to 3,000 lb per

A heavy, flexible covering (usually made of woven-wire rope or cordage); covers an area during blasting, to prevent rock or