For general industry working at a 4 foot height or a low sloped roof osha requires.
Solar distance from edge of roof.
However roof mounted solar installations must also be more than 30cm away from the external edge of the roof meaning that actually you will need an even larger space so this needs to be factored in to any roof sizing calculations.
The international fire code 605 11 3 2 4 that states panels modules installed shall be located no higher than 3 ft below the ridge to allow for fire department ventilation operations significantly decreases the attractiveness of residential solar pv because it applies to both sides of a peaked roof.
The minimum distance from the chimney is 60cm.
Source i do a lot of inspections for solar.
Conventional fall protection guardrail fall restraint or fall arrest system is required.
Roof mounting clearance solar panels you want to mount on a roof must have at least 3 inches but 4 to 6 inches is better distance between the roof and solar panels frame.
60mm gap 120mm from roof edge 70mm gap 140 mm from roof edge etc.
Answer background in 29 cfr part 1926 subpart m fall protection 1926 501 b 1 states.
6 feet from the edge.
Five times the distance between the modules and the roof surface.
Each employee on a.
The fire code which is partially enforced by building code is dictating these days that yes you need 36 inches from edge to panel to allow walking space for firemen.
Employers are to ensure that each employee is protected from falling by using fall protection systems such as non penetrating guardrails safety net system fall restraint or fall arrest systems.
Where either axis of the building is 250 feet 76 200 mm or less there shall be a minimum 4 foot wide 1290 mm clear perimeter around the edges of the roof.
Conventional fall protection guardrail fall restraint or fall arrest system is required.
Hope this helps steve.
Unprotected sides and edges.
The reason for this clearance is that it allows air flow under the solar panels for cooling them.
So if you have a 50mm high gap between panel and roof 100mm minimum distance panel from the roof edge.
Between 6 feet and 15 feet from the roof edge.
There shall be a minimum 6 foot wide 1829 mm clear perimeter around the edges of the roof.
Is there a safe distance from the edge of a roof for construction workers doing work while on a roof but not engaged in roofing residential pre cast erection or leading edge work.