A concrete slab over the roof framing to overcome wind uplift forces.
Storm shelter roof.
A steel door mounted in a steel frame for a storm shelter with three deadbolts located opposite heavy duty hinges lets only people and pets into the room not door busting debris.
The plywood should extend over the.
Steel and plywood sheathing is fastened with either 3 in.
Standard on the design and construction of storm shelters icc 500.
Building an in ground or above ground storm shelter should be done by licensed professionals who follow the guidelines set by governmental organizations such as the federal emergency management administration fema.
Each pipe should extend 3 feet over the roof of the shelter after it has been covered and at least 3 feet from the roof into the shelter.
Self tapping screws or 3 in.
International code council and national storm shelter association 2008.
A storm shelter is a safe place that you can use to take refuge during a catastrophic storm event such as a tornado or a hurricane.
Design and construction guidance for community shelters fema 361.
These pipes will be the shelter s ventilation system.
Building the roof step 1 anchor 1 inch plywood to the top of the cinder block walls using 3 inch concrete screws.
Deck screws are driven through pilot holes spaced every 6 in.
Building a safe room inside your house fema 320.
Federal emergency management agency 2004.
The system is engineered and tested to resist extreme winds and debris impact as defined by the fema 361 design and construction guidance for community safe rooms for.
Storm shelter roof assembly design the perform a deck and series 300 metal roof and deck assembly sets the standard for the hurricane and tornado enhanced roofing envelope.