钢结构工程施工验收规范第4·4·8条规定:设计要求顶紧的节点,相接触的两个平面必须保证有70%紧贴,用0.3毫米的塞尺检查,插入深度的面积之和不得大于总面积的30%。边缘最大间隙不得大于0.8毫米。最近,我单位施工的一个1.7万平方米的工业厂房中,设计采用了12米钢托架G513,15米钢屋架 Rules and regulations for construction acceptance of steel structures Article 4.4 and Article 8: Design requirements for the tightest joints, the contact between the two planes must be guaranteed to have 70% close, check with a 0.3 mm feeler gauge, the sum of the depth of the insertion depth Must not exceed 30% of the total area. The maximum clearance at the edge must not exceed 0.8 mm. Recently, a 17,000-square-meter industrial plant built by our company was designed with 12-meter steel bracket G513 and 15-meter steel roof frame.