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一、为什么一般要求道路底层宽度要大于面层宽度? 目前我们修筑城市主要街道,大都是采用多层式路面。面层、底层(包括垫层)有时可达四、五层之多。设计图纸对面层宽度有明确要求,但对以下各层宽度则不加规定。施工技术规程中对道路底层的质量要求,有一条对宽度的具体规定,那就是不小于设计宽度(指面层宽度)。但是究竟是等
First, why the general requirements of the road bottom width is greater than the width of the surface? At present, we build the city’s main streets, mostly using multi-layer pavement. Surface, bottom (including the cushion) sometimes up to four or five layers. Design drawings on the width of the surface has a clear requirement, but the width of the following layers are not specified. Construction of technical requirements of the road bottom of the quality requirements, there is a specific provisions of the width, that is not less than the width of the design (referring to the width of the surface). But what exactly is