Class 2 water-reactive solids and liquids shall not be stored in basements unless such materials are stored in closed water-tight containers or tanks. Proposal Pages. Items.Resources and Experience of Bidder. Hi-Lifts, Extra Long Trailers, Semi-Pole Trailers, Double. Apply to Laborer, Installer, Foreman and more! Most trailers are designed for conventional lumber, with out ripping. I would assume that solid wood PT boards would be stronger and last longer but I'm getting conflicting evidence online as a lot of people recommend plywood.