Would this be appropriate for bulding a picnic table?

Hello, and thank you for your interest in Trex! Many customers use Trex decking outside of its intended use in creative applications. If doing so all supports must be made from structural material, do not use Trex for supports. For fastening use only Trex recommended fasteners to help prevent mushrooming. In addition all gapping rules still apply. Hope this helps! Thanks, Tori - Trex Customer Care Team