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Rebuilding Haiti will be a tough haul. Major institutions—the national cathedral, the presidential palace—lie toppled. Countless other homes, stores, office buildings and more churches have been reduced to rubble. Debris will need to be cleared before new structures can take their place.

Those buildings still standing will need to be tested for safety. Indeed, two-thirds of the buildings in Port-au-Prince were unsafe before the Jan. Victoria Harris, CEO of Article 25, a nonprofit architectural consulting firm whose name derives from the United Nations charter construciton the built environment as a human right, discussed the opportunity for Haiti to build a truly modern city on the ruins of what came before.

After the tsunami in Indonesia, recent parasis,ique in Columbia, earthquakes in Mexico, in rural China and in Nicaragua—not to mention the devastation of Hurricane Katrina on the Gulf Coast of the United States—a template for rebuilding in poor countries has begun to take shape.

But the bureaucratic silos that plagued the immediate efforts to save lives in New Orleans appear to be present in the Haitian relief effort as well. The State Department has yet to reach out.

Pafasismique experts in the field of urban planning are already thinking about ways to build a better Port-au-Prince. Habitat for Humanity will soon be on the ground, and Earthspark, a company promoting solar power in developing countries, plans to send over 50, solar lamps, mobile chargers, and flashlights to help in the rescue effort and lay tracks for a renewable energy revolution in Haiti.

Peterson, of Global Green, would like to see an effort at reforestation accompany the new city blueprint. Davis believes urban planners must focus on social factors as well. John McAslan, a partner for the architecture firm sponsoring the competition, said: Follow her on Twitter. Il y a aussi de bons ouvrages. Mais ils nous disaient, c’est pire chez eux! The Consfruction York Times To scientists who study seismic hazards in the Caribbean, there was no surprise in the magnitude 7 earthquake that devastated the Haitian capital, Port-au-Prince, two weeks ago.

Except, perhaps, in where on the island of Hispaniola it occurred. The fault that ruptured violently on Jan. Calais and others had warned in that a quake could occur along that segment, part of what is called the Enriquillo-Plantain Garden fault zone, although they could not predict when. But about miles to the northeast is a long segment of a similar fault, the Septentrional, that has not had a quake in years. Researchers have estimated that a rupture along that segment — and again, they ves no idea when one might occur — could result in a magnitude 7.


Earthquakes and landslides along the Puerto Rico Trench, an undersea fault zone, have the potential to cause tsunamis.

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The Haitian quake itself might have added to the risks, researchers say. Although the results are preliminary, the work shows that stresses have increased just west of the segment and just east, within three miles of Port-au-Prince.

The Haitian quake has produced a large number of aftershocks, about three times as many as quakes of similar magnitude in California and elsewhere, Dr. But the intensity and frequency of those aftershocks have followed the patterns of other earthquakes, he said. Last Thursday, the geological survey issued a statement estimating that there was a 3 percent likelihood of a 7 magnitude aftershock in the next 30 days, and a 25 percent chance of one of magnitude 6.

On Wednesday, the area experienced a strong aftershock that was initially rated at 6.

Of some concern, researchers said, was that none of the aftershocks have occurred in the area of increased stress nearer to Port-au-Prince, where ordinarily some might have been expected. Along the boundaries, the relative eastward movement of the Caribbean plate, at the rate of less than an inch a year, creates strike-slip construxtion, shallow fissures whose sides slide in relation to one another in an earthquake.

On the island of Hispaniola, which comprises the Dominican Republic and Haiti, the Caribbean-North American boundary stresses are expressed in numerous strike-slip faults, including the Enriquillo and Septentrional, which are relatively long and roughly parallel.

This is a subduction zone — where the North American plate is sliding under the Caribbean, creating the potential for earthquakes and undersea landslides that can set off tsunamis.

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But in other places around the Caribbean, research money has been hard to come by. Haiti, for example, has no seismometers, meaning there has been no way to measure all the small tremors that might help parasidmique the Enriquillo fault. Researchers have relied on a parasiwmique of 35 benchmarks to measure fault movement. Mann and others were planning a trip to Haiti to make more accurate measurements for their stress calculations, and to install devices to monitor the fault zone continuously for a year or more.

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Much of what is known about the seismic activity around Port-au-Prince has been gleaned from historical accounts of previous quakes. That raises the possibility that the Jan. Prentice, a geologist with the geological survey in Menlo Park. Such sequences have been observed on other faults, including the North Anatolian in Turkey. Prentice and others have constructtion basic research on a segment in the Dominican Republic.


The study involved digging trenches across the fault and looking for rupture lines in the sediments.

By finding higher sediments that are unruptured, the dates of quakes can be determined. Researchers said that more study was needed on the Septentrional and Enriquillo faults and elsewhere in the Caribbean, and that governments needed to prepare better for the inevitable. There are already signs that the Haitian quake has prompted concern elsewhere in the region, at least among the general population.

Maisnos said he was on Jamaican radio programs in the past two weeks to discuss the hazards. All those things have put the whole country on edge.

Note from the author. January 27, An article on Tuesday about seismic hazards in the Caribbean referred incorrectly individelles the Septentrional fault, where some experts had thought an earthquake might first occur on the island of Hispaniola.

A long segment in the Dominican Republic, not the entire fault, has gone without a quake for years. Liens vers cet article Envoyer par e-mail BlogThis! Il fait pages.

Solution en matière d’habitation. Du sur mesure à votre mesure.

La taille du fichier pdf est de 58 Meg. Construction de la Tour Pearl River. Wikipedia Commons12 mars Ces abris parasiskique pourraient recevoir chacun, je l’imagine, plusieurs dizaines de familles Si vous voulez allez consttuction au but, cliquez sur: Par Michel CorbeilLe Soleil.

There are several outer buildings that seemed to have suffered minor damages, with one new building under construction pictured that appeared intact. A second MOE building near the waterfront appeared intact was unable to gain access. Stress to joints, window and door frames were effected and cracking on walls on lower floor. Unable to gain access because of rubble to egress areas. While there were workers on the premise egress into the building was limited.

Additionally, there are more than one thousand internally displaced persons camped on the property. They were alternately conducted by Mess. Greg Hall, and SGT. The following bureaus, offices, and ministries were surveyed: Of the 22 structures surveyed: And one building, the Ministry for Youth and Sport appeared to have suffered only minimal damages.

Et je fais mienne cette affirmation de Jean Rostand: