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湾区换屋顶(2):屋顶垃圾哪里回收
申请permit时,规定屋顶的垃圾至少60%要回收,意味着你要送到取得政府license的回收站回收,然后拿到回收的证据,也就是receipt,供屋顶检查时验收,否则,会被罚款。 1.怎样找有政府认可并取...
北美各直径电缆允许通过的电流
Good question — the ampacity (current-carrying capacity) of a wire depends on: Wire gauge (AWG size) Insulation type and temperature rating (e.g. THHN, NM-B, etc.) Ambient tempera...
北美roof slope与roof pitch的区别
倾斜度和坡度都表示屋顶的倾斜度,表示为垂直与水平的比例。本文介绍了屋顶坡度和屋顶坡度,以及它们之间的区别,因为它们并不相同。由于坡度会影响屋顶系统的安装方式,包括决定可以应用哪种类...
北美电气导管英文缩写
北美电气导管(Electrical Conduit)主要分为金属和非金属(主要是PVC和HDPE)两大类,在北美电工行业中,均有标准的缩写代号。 金属导管 (Metallic Conduit)EMT (Electrical Metallic Tubing -...
Smoke & Carbon Monoxide Alarms locations
Smoke & Carbon Monoxide Alarms Minimum Requirements for Smoke Alarm Placement: In every sleeping room Outside each sleeping area in the immediate vicinity of the bedrooms On ea...
sanjose自建 加建permit申请流程,这是政府的指导视频 San Jose Building Permit Steps
sanjose自建 加建permit申请流程,这是政府的指导视频 San Jose Building Permit Steps
北美地板托梁,大梁开槽,开洞,切割要求
Cutting, Notching, and Bored Holes in Floor Joist Notching in floor joists and beams and girders. Notches located at the ends of solid lumber floor joists are permitted, provided t...





