Insulated reinforced concrete roof decks.
Reinforced concrete roof deck tornado proof.
In general a minimum fall of 1 in 80 will help to prevent ponding of water.
Ridge and valley beams.
A concrete roof is exactly what it sounds like.
Exact specifications vary but most concrete roofs are several inches thick.
This concrete dome house in blanchard ok took a direct hit from an ef4 tornado in 2014.
The icf home in nearby newcastle also lost most of the roof.
Tornado resistant houses with insulated concrete walls.
A concrete tornado room is only as good as its weakest point making the door to the room an important factor.
A solid slab of concrete capping the top of your house.
It boasts excellent thermal mass which reduces energy spent on heating and cooling takes less energy to produce compared to other materials and boasts low co2 emissions.
Because concrete doors would weigh too much for people to maneuver when they need to access the room fabricated or store bought missile resistant steel doors work best according to texas tech university s wind science engineering research center.
Disaster resistant concrete shell variations.
Beneath the roof cover structural concrete roof decks are commonly topside insulated using adhered insulation panels or cast in place lightweight insulating concrete.
Sample structural analysis for a concrete shell.
In this case the hurricane straps held the roof in place but the tornado pulled off the plywood roof sheathing which left the inside exposed.
While the windows were blown out and there was significant damage the structure survived.
This is one of the common causes of flat roof waterproofing failure.
The only known roof systems that have consistently survived high category hurricane and tornado velocity winds have been built with structural reinforced concrete decks securely and sufficiently connected to structural reinforced concrete or reinforced concrete block walls.
A robust building material concrete can withstand extreme weather conditions and requires little maintenance as a non porous substance.
Would cause a breakdown on the roof surface.
Structural concrete deck a cast in place concrete deck serves as an integral part of the structure and is designed to carry heavy loads normal weight concrete is typically used for cast in place construction.
For example the florida based company hurricane proof systems offers a 7 inch 18 centimeter slab of concrete in three layers.
Insulated reinforced concrete roof decks.