Final answer:
The maximum slope of a ramp used for egress with no site constraints depends on accessibility requirements and guidelines. A commonly suggested maximum slope for wheelchair accessibility is 1:12.
Step-by-step explanation:
The maximum slope of a ramp used for egress with no site constraints depends on the accessibility requirements and guidelines set by various organizations. In general, a commonly suggested maximum slope for ramps used for wheelchair accessibility is 1:12, which means for every 12 units of horizontal distance, the ramp should rise by 1 unit vertically. However, it is important to note that different countries and jurisdictions may have their own specific regulations and guidelines for maximum ramp slope.