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某住宅小区住宅楼外墙南北两侧均设有外伸700mm,宽1000(1500)mm,高100mm,C25混凝土现浇钢筋混凝土空调板。一、具体做法(1)空调板护栏设计做法为:下部栏杆16 mm×16 mm方钢、中距200 mm左右;上部横杆为25 mm×25 mm方管焊接。查阅国标现行冷弯薄壁方钢管的规格及截面特性得出,25 mm×25 mm冷弯薄壁方钢管规格只有25 mm×25 mm×1.5 mm一种。(2)护栏防腐设计做法为:清理金属面除锈防锈漆或刮腻子磨光、调和漆两遍。
A residential area residential buildings on both sides of the outer wall are provided with 700mm, 1000 (1500) mm wide, 100mm high, C25 concrete cast-in-place reinforced concrete air conditioning panels. First, the specific approach (1) air conditioning panels fence design practices: the lower railings 16 mm × 16 mm square steel, about 200 mm in distance; the upper crossbar 25 mm × 25 mm square tube welding. According to the current GB specifications and cross-sectional properties of cold-formed thin-walled square steel pipe, 25 mm × 25 mm cold-formed thin-walled square steel pipe is only 25 mm × 25 mm × 1.5 mm. (2) guardrail corrosion design practices: clean the metal surface rust rust-proof paint or putty polishing, reconcile the paint twice.