NCC Aluminum Decking/Shoring Beams are manufactured from heat treated 6061-T6 aluminum which provides the best strength-to-weight ratio. The heads or end fittings have all-steel construction with tapered ends for ease of operation and zinc plating for corrosion resistance. The heads also possess a steel trigger and spring mechanism for a long-lasting positive lock control. NCC Beams, in Decking/Shoring applications, are designed to have a 2,000 lbs. uniformly distributed working load limit. Series E or A Aluminum Beams for 96 in. Wide Trailers.