Featured Research

from universities, journals, and other organizations

Do And Don't Of Building In Hurricane-prone Areas

Date:
June 16, 2009
Source:
New Jersey Institute of Technology
Summary:
Experts have evaluated the best building design and construction practices to reduce wind pressures on building surfaces and to resist high winds and hurricanes in residential or commercial construction.

Better building practices for structures in hurricane-prone regions will be the focus of a paper next month in Caribbean Construction Magazine by NJIT architecture professor Rima Taher, PhD. Taher has written extensively about best building design and construction practices to reduce wind pressures on building surfaces and to resist high winds and hurricanes in residential or commercial construction.

She is a civil/structural engineer who teaches at NJIT's College of Architecture and Design. Her courses include topics related to wind and earthquakes with guidelines and recommendations for better design and construction in hurricane and earthquake prone areas. Taher also helps prepare architecture graduates for the certifying exam and has authored a book on the topic. In 2007, her article about the design of low-rise buildings for extreme wind events appeared in the Journal of Architectural Engineering.

"Certain home shapes and roof types can make a big difference," is a common refrain in all her work.

Her recommendations in the forthcoming article should be heeded by anyone building in high wind regions. They include the following.

Design buildings with square, hexagonal or even octagonal floor plans with roofs of multiple slopes such as a four-sloped hip roof. These roofs perform better under wind forces than the gable roofs with two slopes. Gable roofs are common only because they are cheaper to build. Research and testing demonstrate that a 30-degree roof slope will have the best results.

Wind forces on a roof tend to uplift it. "This explains why roofs blow off during extreme wind events," Taher said. To combat uplift, she advises connecting roofs to walls strongly with nails, not staples. Stapled roofs were banned in Florida after Hurricane Andrew. The use of hurricane clips is recommended. The choice of roofing is important. Different roofing systems perform differently under hurricane conditions. In tile roofs, loose tiles often become wind-borne debris threatening other structures.

Aim for strong connections between the structure and foundation. Structural failure-- one structural element triggering the collapse of another—can be progressive.

Hurricane shutters can protect glazing from wind-borne debris. Various designs are available.

Roof overhangs are subject to wind uplift forces which could trigger a roof failure. In the design of the hurricane-resistant home, the length of these overhangs should be limited to about 20 inches.

The design of the researched cyclonic home includes simple systems to reduce the local wind stresses at the roof's lower edges such as a notched frieze or a horizontal grid. Install the latter at the level of the gutters along the homes' perimeter.

An elevated structure on an open foundation reduces the risk of damage from flooding and storm-driven water. All foundation piles must be strengthened by bracing and should penetrate deep enough into the soil to reduce the risk of scour.


Story Source:

The above story is based on materials provided by New Jersey Institute of Technology. Note: Materials may be edited for content and length.


Cite This Page:

New Jersey Institute of Technology. "Do And Don't Of Building In Hurricane-prone Areas." ScienceDaily. ScienceDaily, 16 June 2009. <www.sciencedaily.com/releases/2009/06/090615144213.htm>.
New Jersey Institute of Technology. (2009, June 16). Do And Don't Of Building In Hurricane-prone Areas. ScienceDaily. Retrieved August 20, 2014 from www.sciencedaily.com/releases/2009/06/090615144213.htm
New Jersey Institute of Technology. "Do And Don't Of Building In Hurricane-prone Areas." ScienceDaily. www.sciencedaily.com/releases/2009/06/090615144213.htm (accessed August 20, 2014).

Share This




More Matter & Energy News

Wednesday, August 20, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Flower Power! Dandelions Make Car Tires?

Flower Power! Dandelions Make Car Tires?

Reuters - Business Video Online (Aug. 20, 2014) Forget rolling on rubber, could car drivers soon be traveling on tires made from dandelions? Teams of scientists are racing to breed a type of the yellow flower whose taproot has a milky fluid with tire-grade rubber particles in it. As Joanna Partridge reports, global tire makers are investing millions in research into a new tire source. Video provided by Reuters
Powered by NewsLook.com
Awesome New Camouflage Sheet Was Inspired By Octopus Skin

Awesome New Camouflage Sheet Was Inspired By Octopus Skin

Newsy (Aug. 19, 2014) Scientists have developed a new device that mimics the way octopuses blend in with their surroundings to hide from dangerous predators. Video provided by Newsy
Powered by NewsLook.com
Researcher Testing on-Field Concussion Scanners

Researcher Testing on-Field Concussion Scanners

AP (Aug. 19, 2014) Four Texas high school football programs are trying out an experimental system designed to diagnose concussions on the field. The technology is in response to growing concern over head trauma in America's most watched sport. (Aug. 19) Video provided by AP
Powered by NewsLook.com
Green Power Blooms as Japan Unveils 'hydrangea Solar Cell'

Green Power Blooms as Japan Unveils 'hydrangea Solar Cell'

AFP (Aug. 19, 2014) A solar cell that resembles a flower is offering a new take on green energy in Japan, where one scientist is searching for renewables that look good. Duration: 01:29 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins