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这位朋友,给您做个修正:ZERO point is the coincident point of the centre axis of the post and the horizontal plane cutting the post. When taking a measurement between the two posts, distance is calculated from one centre line of the post to the other.
另外,围墙材料:1. 如果是木质的,木材的宽度不是只有一种规格(即木板宽度不定,例如:20mm,30mm,50mm等等);2. 如果是铁质的,一般是colorbond with top reinforcing channel,材料的宽度也不是只有一种规格。具体宽度请查阅colorbond各种形状的宽度(网上有)。
掌柜的解答: 详实,客观,专业,有货,值得信赖! |
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