I'm going to be having a small local contractor install an extension to an existing sidewalk to wrap around to the side of my house -- approximately
65' long and 3' 4" wide so that I can add a handicapped ramp for access by a disabled relative at the side door. All of the other entrances to the house are in the incredibly-difficult-to-impossible-to-retrofit category so that is the only option. I got three estimates, all from small local contractors, and all of them came in within a 5% spread so I decided to go with the one who seemed most businesslike and experienced. Only one of the contractors asked any questions about what strength of concrete I preferred and I had never really thought about it in regards to a sidewalk. The options given were 3,000 psi or 10,000 psi. It would seem that the cheaper material would do for a seldom-used walk on a solid base in a no-frost area but I don't know much about concrete except that it is damned heavy going in and coming out so it seemed a good idea to ask. Any reason to go for the more expensive grade in a project like this? TIA