Prefabricated Structures And Scaffolding

includes prefabricated panels; inflatable shelters; metal screens and metal windows.

includes expandable and nonexpandable shelters.

includes special bridge erection equipment; bridge floats and pontoons; tramways; trestles.

includes assembled and unassembled tanks for storage only; enclosures for pressure and vacuum tanks; petroleum bulk storage tanks.

includes prefabricated concrete placing forms; builders' ladders and stepladders; suspension stages.

includes power transmission towers; radar towers; searchlight towers; control towers; prefabricated tower components, such as anchor rails, tie rods, braces, steps, guy assemblies; specialized tower hardware.

includes bleachers; grandstands.