Follow the manufacturer's instructions carefully, as there are some restrictions on blind-nailing wider planks to prevent wind uplift
. (Wind can lift wider planks if they're only attached at the top.)
The chord bracing prevents buckling of the trusses due to wind uplift
. This design accommodates the Florida Building Code's specific requirements for the Miami-Dade and Broward counties, which are located in a High-Velocity Hurricane Zone.
"They're desirable in snowy areas [because they] shed snow easily." They also respond very well to wind uplift
In reality, the wind uplift
pressure is dynamic, and the response of the roofing structure is dynamic as well.
of resistance to wind uplift
, connecting interior floors and partitions.
All had to offer a 20-year warranty and their systems had to carry the UL Class 90 Wind Uplift
Rating, meet even tougher tests established by the Corps of Engineers' Guide Specification 07416, and satisfy other criteria established by the consultants, local code, and the roof manufacturer successfully awarded the project.
Installed roofing membrane systems shall remain watertight; and resist specified wind uplift
pressures, thermally induced movement, and exposure to weather without failure.
Protected membrane systems are vulnerable at the support board attachment to the structural deck, according to the RCI report Wind Uplift
Resistance Evaluation of Commercial Roofs With and Without Add-ons.
Each of the components of LiteEarth has been separately tested to meet their stated performance requirements as part of the overall system, for properties such as tensile strength, puncture resistance, tear resistance, methane gas permeability, seam strength, flume testing, water vapor transmission, UV resistance, wind uplift
Perhaps the problem could have been prevented if the design professional would have properly analyzed the data from wind uplift
pressures, building height, slope, type of concrete roof tile, method of attachment, moment resistance of the selected method of attachment and adjusted the design; or if the building department having jurisdiction would have reviewed and rejected the permit application for not meeting the building code requirements?
Heavy-timber flames, with or without infilling, are more resistant to trauma from earthquakes, wind uplift
and heavy snow load than light-frame construction.
-- The loads acting on the roof sheathing are wind load (suction) and dead load, consisting of weights of the roof covering and sheathing materials which counteract the wind uplift