请教各位建筑大师，用150的PURLIN建一个7.5X7.5的车棚单边两个立柱还是三个立柱？

cantonese

RT

cantonese

http://www.spanman.net/Members/purlin-single-span#

zhanglei555

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 engage a structural engineer to design for you?:

cantonese

zhanglei555 发表于 2018-5-25 22:11
150Cee purlin is struggling to do the job. Also, you need a edge beam to pick up the purling. Sugges ...

您是说建议用200的purlin？我见过学校用purlin做柱子。

zhanglei555

cantonese 发表于 2018-5-25 22:15
您是说建议用200的purlin？我见过学校用purlin做柱子。

PFC 和轻钢你能分得清吧。7.5m purlin, you need to check the wind load up and down pressure. I do not think the table you attached is correct for you to use.

cantonese

zhanglei555 发表于 2018-5-25 22:18
PFC 和轻钢你能分得清吧。7.5m purlin, you need to check the wind load up and down pressure. I do no ...

这个真不懂，还请赐教

https://www.stratco.com.au/custo ... ns-girts-design.pdf

zhanglei555

cantonese 发表于 2018-5-25 22:30
这个真不懂，还请赐教

https://www.stratco.com.au/custom/files/docs/stratco-steel-framing-purlins-g ...

这个没法教你的。PFC 又称channel,是结构槽钢。轻钢就是Cee purlin or Z purlin,主要用在房顶的rafter 上。这个purlin的间距大概1.2米左右。尺寸大小和间距主要看风载。一句话两句话是说不清楚的。我们干了20多年工程师都不敢乱说的。

cantonese

zhanglei555 发表于 2018-5-25 22:36
这个没法教你的。PFC 又称channel,是结构槽钢。轻钢就是Cee purlin or Z purlin,主要用在房顶的rafter 上 ...

感谢分享！是轻钢，比这种结实

https://www.bunnings.com.au/absc ... le-carport_p3310291