What is the allowable deviation from straightness for a 40 foot long primary truss member?

对40英寸长的主珩架构件允许的直线度偏差是多少？

youdao

In order to avoid a singular solution, we keep the dimension of the truss for a given topology unchanged by giving the truss member to be removed a tiny cross-sectional area.

为了避免结果奇异，在优化过程中，给被删去的构件一个微小的截面积，使一个给定的拓扑组的结构维数保持不变。

youdao

Light wood truss is a common structural member in light wood frame constructions, whose bearing capacity has a close relation with the safety performance of the whole structure.

轻型木桁架是轻型木结构中用得很多的结构件，其承载能力关系着整个结构的安全性能。

youdao