How high is a gas station canopy？

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Is there a standard height for the gas station canopy ?
Generally, the height of the shed area varies from 5 to 7 meters
The height of the lower shed surface of the shed from the floor is determined according to the following conditions:
The shed area is >1000m2 and the height is 7.0m;
800m2 < shed area <=1000m2, height is 6.5m;
600m2 < shed area<=800m2, height 6.0m;
400m2 < shed area <=600m2, height 5.5m;
The shed area is<=400m2 and the height is 5m.

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