Column grid layout has a significant impact on steel consumption of portal frame light steel structure, and housing cost is directly relat-ed. Through different column grid layout and different models builded by PKPM software, this article gets the economic impact of portal frame steel structure column grid layout.%基于柱网布置对门式刚架轻型钢结构房屋的用钢量有明显的影响，和房屋造价直接相关，通过不同的柱网布置，分别用PKPM软件进行建模，得出了在门式刚架厂房设计中柱距对其经济性的影响。
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