Pedestals & Decking
Design Considerations
Detailing
- Detailing of roof joints, edge restraints, and expansion materials. As well as detailing for vehicular applications.
Weight
- The advice of a structural engineer should be sought to assess the capacity of the roof and tolerable deflections from paving-related loads.
Resistance to Wind Uplift
- Some high wind regions may have local building codes with additional weight requirements for paving units, especially on high-rise buildings.
Slope for Drainage
- Use deck systems that enable construction of a minimum 2% slope as some toppings are not waterproof and flat roofs will eventually leak.
Slopes for Pedestrians and Vehicles
- Maximum percentage is typically 8% for pedestrians, 20% for vehicles.
Roof Drains
Raising Elevations
