An ADA-compliant concrete ramp in Greenville SC has hard limits the inspector will measure on day one: maximum 1:12 (8.33%) running slope, maximum 2% cross-slope, minimum 60-inch landing at the top and bottom, detectable warning panels at every curb cut where the ramp meets the vehicular path, and proper handrails at every rise over 6 inches. Davis Concrete sets the form, grades the sub-base, and pours every ramp inside those limits the first time so the building owner is not chasing a code-correction list after the pour.
The most common ADA ramp inspection failures in Greenville SC are slope errors (the ramp is poured at 1:10 instead of 1:12), cross-slope errors (the run drains more than 2% to one side), and missing detectable warning panels. Davis Concrete pre-checks the slope with a digital level before pour, sets detectable warning panel forms in the wet concrete, and provides the inspector with a slope report at completion.
The most common ADA ramp failures the inspector catches in Greenville SC commercial concrete construction are predictable. First, slope errors: the ramp gets poured at 1:10 or 1:8 instead of the maximum 1:12, usually because the form set was not pre-checked with a digital level. Second, cross-slope errors: the run drains more than 2% to one side, which fails inspection even if the running slope is correct. Third, missing or incorrectly-placed detectable warning panels: panels at curb cuts have to be cast in the wet concrete at the right depth, with the right truncated dome pattern, and aligned to the direction of pedestrian travel. Fourth, landing pad failures: the 60-inch landing at the top and bottom of the ramp has to be level within 2% in any direction, and a sloped landing reads as a continuation of the ramp itself. Davis Concrete pre-checks every ramp with a digital level, sets the detectable warning panels in the wet pour, and verifies the landing pads with the inspector at completion.
Any ADA-compliant concrete ramp with a vertical rise greater than 6 inches requires handrails on both sides of the ramp run. The handrails have to be continuous through the run, between 34 and 38 inches above the ramp surface, with rounded grip cross-sections of 1.25 to 2 inches in diameter, and 12-inch horizontal extensions at the top and bottom of each run. Anchor the handrail posts in the concrete during pour with engineered anchor bolts so the handrail can resist 200 pounds of horizontal force at any point. Davis Concrete sets the anchor bolt pattern in the wet pour to the handrail spec, then coordinates with a steel or aluminum handrail fabricator for the rail itself. The result is an ADA ramp that passes inspection on the first walk-through.
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