Roof And Wind Load During Storm Papers

Asce sei 7 10 offers a complete update and reorganization of a metal roof system s wind load provisions to make them more understandable and easier to follow.

Roof and wind load during storm papers.

In order for a structure to be sound and secure the foundation roof and walls must be strong and wind resistant. When building a structure it is important to calculate wind load to ensure that the structure can withstand high winds especially if the building is located in an area known for inclement weather. It is very important to understand how the roofing system act during the storms. The corners the edges of the roof and the ridge line are especially susceptible to damage from high winds.

Whenever there are high winds such as in storms thin metal roofs on sheds as well as concave roofs on huts are sometimes blown away. Load and pressure requirements are contained in section r301. The 3 tab 60 mph to 70 mph wind uplift rated roof covering shingles will be ripped off and leaks will be inevitable. Finally after developing a strong understanding of the destructive nature of these storms and common caused wind failures we analyzed the effect high speed wind storms have on the economy by examining insurance.

Architectural grade shingles rated to withstand wind gusts up 130 mph are your best bet for high wind areas. The wind can get under a corner or small piece of the shingle and curl it or rip it off completely. One of the outcomes of these workshops resulted in the establishment of the roofing industry committee on weather issues ricowi. The roof has two water barriers.

Asce 7 10 provides ultimate event wind maps with corresponding reductions in load factors so that the loads on the metal roof system are not affected. Section r301 2 1 requires that roof coverings resist the c c loads listed in table r301 2 2 as a function of basic wind speed and roof slope. Another danger of high winds to your roof is lifting while the. One explanation provided to me said that the higher velocity of the air outside causes the air pressure above the roof to decrease and when it has decreased to a certain extent such that the air pressure above the roof is lesser than the air pressure beneath.

The sheathing and the other part with shingles and tiles. This can leave your roof exposed in those areas leading to leaks. Of the causes of failures and the types of products that failed was distorted 2 3. The sheathing is the fastened to the rafters it acts like a top layer of the roofing.

With all that said if we were to rank the roofing materials from best to worst for coastal living it would go like this. Roof covering systems e g asphalt shingles clay or concrete tile etc are listed in section r905. Ensuring there is a continuous load path from the roof all the way down to the foundation.