The GRC tube filler used as internal mold has prospect in small span bridge.
GRC薄壁筒芯是一种有发展前景的应用于小跨度桥梁的内模。
The internal structure demanded a higher quality wood that had to be trusted to take the specific loads and span certain distances. These materials were bought at the local second hand wood shop.
用于内部结构的木材因为需要确保具有足够的承重能力以及跨度，对材料质量的要求比较高，所以是从当地二手木材店购买的。
When actual span D-value of equal section continuous beam in designs is less 10%, equal span chart is employed to calculate internal force.
在设计中当等截面连续梁的计算跨度相差不超过10%时，可用等跨的图表来进行内力计算。
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