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立柱纵向位置的确定:先在路缘石上用红铅笔根据立柱间距划出横线。
determination of the vertical position of the column: first, draw a horizontal line on the curb with a red pencil according to the column spacing.
再用线绳和钉子顺路方向上放出一条线,反复调整线形。
then use the rope&nail to set out a line along the road&adjust the alignment repeatedly.
然后用红铅笔在这条线上划出与横线垂直的纵线,形成十字线。
then use a red pencil to draw a vertical line perpendicular to the horizontal line to form a cross.
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推荐关键词:
冲孔板围挡,
道路护栏,
围墙护栏,
广州护栏厂,
围栏