Resturant Patio
Looking at getting a quote in for a resturant but would like some input. Resturant is looking for a 37x20 patio, with a 3ft high retaining wall. There is a concrete side walk right at the walk out 4 or 5 inches below the walk out, the sidewalk runs along the building and sticks out about 4 ft and then there is the pavement driveway about 5 to 7 inches below the concrete sidewalk. What would you guys recomend? The owner just want to pour the concrete over top of the existing concrete and pavement to save money, Any suggestios?
ill try get some pictures.
Thanks
Thanks Lindy, I also think the same, if your going to do it, do it right. Do you have an idea on what a good price would be to do this job?
I don't know what the going rate is in your area for demolition (removing the concrete sidewalk and asphalt), necessary dirt work, or pouring concrete slabs in your area/region ...therefore, I can't really shed any light on cost (going rate) associated with doing so.
If the plan is to pour 4" to 5" of concrete over the existing concrete sidewalk, you could do so; however, it will have an active stress point (bringing about the issue of cracking) where the existing concrete of the sidewalk meets the pavement driveway (two different sub-surfaces moving/expanding-contracting at independent rates, with one large 37'x20' patio poured over them). Could drill holes and insert rebar down into existing substrates to tie old slab into the others; however, doing so will NOT eliminated the potential for cracking where the exisitng concrete sidewalk and pavment driveway meet. For these reason (and more), I would remove the existing concrete, next being usual/typical dirt work/base, finally pouing a new concrete slab for the 37'x20' patio incorporating control joints as per industry standard. If it was one solid concrete exisitng slab that was to be overlaid with 4-5" of newconcrete, in lieu of one sub-surface being concrete and the other asphalt, than I might reconsider and lay4-5" of new concrete over it following standards for doing so; however that is not the case as to statement.
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You can tell the restaurant owner that there is a very real potential for cracking where existing concrete sidewalk meets the asphalt, even have them sign off on this issue not holding you responsible if/when it does, but they will have a convenient lapse of memory (attempting to make you the villan) when cracking occurs that were brought about by pouring the new concrete over these old/separate types of surfaces (be it from ground settlement under them, stress/movement at old/different types of sub-surfaces due to different expansion/contraction rates, etc.). Then is the fact that the existing concrete may be firm/stable/strong; but asphalt paved driveway is never going to to be as firm/stable/strong as concrete is which brings about more issues/concerns.
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Just remove the concrete and and asphalt from the area, perform necessary dirt work, and pour a new 37'x30' patio.