heavy duty ground access mats 1.8mx 0.9m for nstruction 12mm thick red ground access mats 100 tons load capacity-HDPE Independent testing shows CrossLam Access Mats are more than twice the strength of bolted mats. During testing the CrossLam mat llapsed with a weight of 58,411 lbs, while the Fir bolted mat crumbled at just 25,550 lbs.