Are there any buildings blocking available sun? For a successful garden, you want a minimum of 6 1/2 hrs of sun exposure. There are many crops that can grow in lower light, but the minimum light available needs to be more than 4 1/2hrs.
Weight capacity (rooftops)
Vegetable garden beds add an additional 75-100lbs per sqft to the roof.
Is there a way to get up to the roof or to the garden area easily? If a stairwell goes up to the roof directly, that is the easiest. Is there a service elevator that could bring the GCG installation crew as close as possible when we are installing the garden? Moving soil up stairs can be time consuming and costly (unless there are a lot of volunteers, then we can do it bucket brigade-style). Also, will a maintenance farmer be able to access the roof on a weekly basis?
Is there a water source available on the roof, or will it be easy to move water from the restaurant to the roof (similar issue as access)?
We recommend a minimum 100sqft available space for it to be worth it for you to do the garden installation. If there is less than this available, it may not be the best option. We can do smaller beds spread out around the roof, so the 100sqft does not need to be in one place, but the total available space on the rooftop or garden area.