请教各位建筑大师，用150的PURLIN建一个
RT 评论 http://www.spanman.net/Members/purlin-single-span# 评论 150Cee purlin is struggling to do the job. Also, you need a edge beam to pick up the purling. Suggest you to install three post and use 200Cee purlin for 7.5m span. Have u e...澳洲华人论坛