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楼梯底板模安装前需计算其长度。据此配模、下方木料。通常施工图中不给出楼梯底面长度,只有水平和竖向尺寸,我们可用勾股定理计算这个直角三角形斜边长度。但由于这些数平方后的数值很大,尤其是还要开方,在手边缺少计算器的情况下,只好现场量测或放样。这里介绍二句可以估算甚至能较精确地得出楼梯底面长度数值的口决。第一句口诀是:“长八短六斜十”。意思是说在楼梯这个直角三角形中,将长边(即水平段)乘以8,
The length of the stair bottom plate must be calculated before installation. According to this model, below the wood. Usually the length of the bottom of the staircase is not given in the construction drawing. Only horizontal and vertical dimensions are available. We can use Pythagorean theorem to calculate the length of the hypotenuse of this right triangle. However, due to the large number of squared values, especially the lack of calculators, it is necessary to measure or stake out on the spot. Here we introduce two sentences that can be used to estimate the length of the stairs’ bottom surface. The first sentence is: “Long eight short and six oblique and ten.” This means that in the right-angled triangle of the staircase, multiply the long side (ie, the horizontal section) by 8,