Or, the town engineer can simply add it in to the contracts. An example from the Project Gutenberg copy of [The Municipal and Sanitary Engineer's Handbook](http

Or, the town engineer can simply add it in to the contracts. An example from the Project Gutenberg copy of [The Municipal and Sanitary Engineer's Handbook](http://www.gutenberg.org/files/55935/55935-h/55935-h.htm#Page34 http://www.gutenberg.org/files/55935/55935-h/55935-h.htm#Pag...), page 35, there's a considerable discussion of how to specify a road paving contract. And later on page 57 or thereabouts there's talk about specifying the machinery needed to break the stones for a roadway (some produce much better road stones than others). And page 163 (about) has a super interesting diversion on how awful most companies are about replacing the road surface after ripping it up: