Non-metallic rigid pipes for building; non-metallic structures or buildings, namely temporary, permanent or transportable structures or buildings for transportable housing in the nature of prefabricated housing and building units; non-metallic access platforms, work platforms, and scaffolding; access platforms, work platforms, and scaffolding made principally of wood or rubber; support structures made principally of wood or rubber; non-metallic cargo retention structures (dunnage); non-metall...