Class 006: steel pipe; steel highway safety accessories, namely, steel guardrails and steel sign posts; steel engineered products for use in infrastructure, mining, forestry, agricultural and municipal applications and residential, industrial and commercial building and construction, namely, pre-stressed and precast steel bridge and slab products, namely, bridge girders and beams, piles, bridge decks, slabs, double-tee slabs and hollow-core slabs; prefabricated/engineered soil-steel bridge structures; multi-plate bridge and bridge-plate bridge and/or a combination thereof comprised of the steel element of a buried soil-steel structure; steel bin retaining walls; Class 019: concrete, high density polyethylene, geosynthetic products for use in infrastructure, mining, forestry, agricultural and municipal applications and residential, industrial and commercial building and construction, namely, concrete pipe and accessories, namely, elbows, tees for use in association with fittings/pipes, beveled ends for use in association with fittings/pipes, end sections for use in association with fittings/pipes, headwalls for use in association with fittings/pipes and anchor blocks for use in association with fittings/pipes; concrete utility sheds and vaults and accessories therefore, namely, concrete bases for sheds, non-metal lids for utility vaults, concrete and high density polyethylene risers and high density polyethylene transitional rings, both for septic tank applications, namely, to create above-ground access to buried septic tanks; concrete box culverts; concrete highway safety products, namely, jersey barriers and curbs; high density polyethylene pipe for drainage purposes; high density polyethylene tubing for drainage purposes; high density polyethylene membrane for foundation protection and floor underlayment; concrete, steel and polyethylene spiral rib pipe; and geosynthetic products used for soil stabilization and soil architecture, namely, geotextiles, geogrids, geocells and erosion control blankets; Concrete engineered products for use in infrastructure, mining, forestry, agricultural and municipal applications and residential, industrial and commercial building and construction, namely, pre-stressed and precast concrete bridge and slab products, namely, bridge girders and beams, piles, decks, slabs, double-tee slabs and hollow-core slabs; corrugated non-metal structural plate mini-bridge spans; concrete arch bridges; pre-stressed and precast concrete parkade construction components, namely, concrete columns, beams, walls, stairs and slabs; pre-stressed and precast concrete marine construction components, namely, piles, beams and slabs; absorptive noise barrier walls made of cement and wood; reflective noise barrier walls made of cement, concrete and acrylic; acoustic enclosures, namely, barriers or structures to dampen noise around air conditioning units and hydro structures; concrete retaining walls; primarily non-metal storm water detention systems, comprising a corrugated steel pipe and high density corrugated polyethylene pipe system for water storage; architectural and insulated precast concrete panels; Class 020: concrete landscaping benches, picnic tables, storage lockers; non-metal ladders for use inside a utility vault; Class 021: concrete planters for flowers and plants
