The first point to recognize with resurfacing work is the importance of having the base surface in the proper condition to recieve the topping. Scarify or abrade all areas that show any signs of scaling, lamination, crumbling or excessive laitance. All material that is suspected of being weak should be removed to expose sound clean concrete. Immediately prior to the acid etching it is worthwhile to make a final check to see that the surface is throughly clean. For concreting, some jobs have adjacent sound paving which may provide the boundaries for the work, otherwise, wood forms will have to be used. In bonded concrete resurfacing it is essential to match exactly the joints in the old pavement. Longitudinal and transverse expansion joints can be readily formed in place using wood or fiberboard strips. Grouting should be placed just prior to the placing of the topping.