改建老路,应该按照规定的技术标准进行测设。在测设中首先要解决的一个问题,是怎样才能使改建以后的老路既能符合规定的技术标准,又能最合理地利用老路上已有的各项工程。因为老路改建的测设,比起新路来,虽然有许多有利条件,但也存在着许多特殊问题,特别是在路面设计方面,要比新路复杂得多。下面介绍我们在工作中的一些作法和看法: Reconstruction of the old road, should be in accordance with the provisions of the technical standards for measuring. One of the first problems to be solved in surveying and mapping is how to make the old road after reconstruction not only meet the required technical standards but also make the most reasonable use of the existing projects on the old roads. Because the measurement of the old road reconstruction, compared with the new road, although there are many favorable conditions, but there are many special problems, especially in the pavement design, much more complex than the new road. Here are some of our practices and opinions at work: