Showing results 401 - 489 of 489
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Threshold Sweep Flashing protects the door and helps to keep out wind-driven rain.
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To avoid leakage if the hip or ridge shingles blow off, the underlayment should be lapped over the hip and ridge, unless there is a ridge vent.
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Types of brackets recommended for use in securing cabinets and drawers to the wall of the home.
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Typical hurricane strap to roof framing detail. Rafter or prefabricated roof truss.
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Typical installation of plywood openings protection for masonry (including CBS) building.
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Upper-floor tie to lower floor for two-story building. Floor tie anchor and nailed wall sheathing.
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Variation of maximum negative main wind force resisting system (MWFRS) pressures based on envelope procedures for low-rise buildings.
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Vertical (buoyant) flood force; buoyancy forces are drastically reduced for open foundations (piles or piers).
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Vinyl and aluminum soffit panels can blow away in high winds if not properly connected.
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Water depth versus wave height, and water depth versus breaking wave force against, a vertical wall.
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Wave scour at a single vertical foundation member (pile), with and without underlying scour-resistant stratum.
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When averaged over several years, more fatalities are caused by extreme heat than by any other weather-related hazard
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When flood waters reach living areas, the resulting mold and contamination can greatly increase clean up time and costs.
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When installing fasteners in roof sheathing, common mistakes include using the wrong size fasteners, missing the framing members, overdriving nails, and using too many or too few fasteners.
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When the EIFS siding on this house gave way in high winds, it revealed severe rotting of the sheathing beneath the windows due to long-term water leakage.
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When the lower break-away wall gave way in coastal flooding it peeled some of the EIFS siding off with it because there was no suitable break in the siding to allow it to detach cleanly.
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When the soffits blew away in 140 to 160 mph hurricane winds, wind-driven rain was allowed to enter the attic.
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With fiber cement siding, face nail rather than blind nail where the design wind speed is ≥100 mph.
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With fiber cement siding, place blind nails 3/4 to 1 inch from top edge and > 3/8 inch in from butt ends.
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Wood siding installation details to improve resistance to wind-driven rain at corners.
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Wrong - Condensation on glass could be caused by poor performing windows or leakage around windows or high levels of indoor humidity.
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Wrong - During high winds air entered the home elsewhere and pushed out the door which was inadequately anchored to the wall.
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Wrong - Framing a dormer using only toe nailing and end nailing is not acceptable in areas subjected to high winds, hurricanes, or earthquakes.
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Wrong - Glazing failed due to windborne debris during a hurricane.
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Wrong - In floodplains, the interior grade elevation should be equal to or higher than the exterior grade as shown on right.
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Wrong - Leaks in the roof sheathing can allow water to get in and wet the drywall, providing fertile ground for mold.
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Wrong - Mold can spread rapidly in flood damaged homes if materials aren't dried quickly.
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Wrong - Negative pressure from hurricane winds caused garage door to collapse inward.
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Wrong - Roof deck sheathing nails missed the trusses, potentially weakening the roof in high winds.
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Wrong - The pile foundation of this home nearly collapsed from coastal storm surges because the piles were not embedded deeply enough in the ground.
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Wrong - The window lying on the ground was protected by a shutter but the shutter was attached to the window frame, rather than directly to the wall framing.
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Wrong - This concrete roof was not adequately attached and reinforced and failed in high winds.
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Wrong - This roof failed in high winds due to lack of metal attachments to the framing.
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Wrong - Utility trim was substituted for the starter strip and the bottom lock was cut off this vinyl siding so the siding pulled loose under wind pressure.
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Wrong – Drain pipe has been cut and foundation penetration has not been properly sealed
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Wrong – For proper detailing of vinyl around windows and other obstacles, use utility trim, punch snaplocks into siding, and do not overlap directly beneath a window.
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Wrong – Garage door failure due to positive pressures from hurricane force winds.
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Wrong – If roof membrane is not fully adhered, it can flutter and fail due to negative pressure from wind above and positive pressure from air leakage through roof deck below
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Wrong – Known as a Hugel Swale, organic matter like sticks and leaves break down into compost and fill the swale full. This limits the swale’s ability to filter rainwater.
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Wrong – Misalignment of the tie reduces the embedment and enables the brick veneer to be pulled away.
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Wrong – Piers set on individual footings with inadequate anchoring to the ground were twisted and toppled by a coastal storm surge, while those anchored in the concrete pad stayed upright.
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Wrong – Roof underlayment is not fully adhered and roof deck seams are not sealed so roof is susceptible to high-wind events
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Wrong – The cabinets and drawers were not outfitted properly with mechanical or self-locking latches, causing them to swing open and spill their contents onto the floor.
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Wrong – The clips holding these metal roofing panels were set too far from the roof eave (above red line) and the panels lifted in strong winds
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Wrong – The gable end wall failed because the rigid foam sheathing was not backed up by plywood or OSB.
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Wrong – The metal panels covering this roof used snaplocks and concealed fasteners that gave way in high winds.
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Wrong – The off-ridge roof vent on the right was poorly anchored and pulled off in high winds allowing water into the home.
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Wrong – The ridge flashing fasteners were placed too far apart and came loose in high winds.
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Wrong – The ridge flashing fasteners were placed too far apart and came loose in high winds.
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Wrong – The ridge flashing fasteners were placed too far apart and did not adequately hold the flashing in place
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Wrong – The rigid sheathing seams are not taped and the gaps could cause moisture problems
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Wrong – The roof sheathing was inadequately fastened and gave way causing the gable end wall to fail
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Wrong – The underside of the first course of siding extends beyond the underlying sheathing leaving it vulnerable being pulled off by pressure from high winds.
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Wrong – The vinyl siding at this gable was installed over rigid foam instead of wood sheathing and neither had the structural strength to resist hurricane wind pressures.
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Wrong – The water-resistant barrier is not complete and the holes and gaps could cause moisture problems
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Wrong – There is not a water-resistant barrier installed underneath the exterior finish of the walls
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Wrong – There is visible light around the door because no weather stripping has been installed.
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Wrong – These clay roof tiles were dislodged by high winds due to inadequate anchorage.
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Wrong – These four ties were never embedded into the mortar joint, allowing the brick wall to be pulled away from the sheathing.
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Wrong – This brick veneer failed in high winds (107 mph) because the ties pulled out of the substrate.
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Wrong – This gable end wall failed because connectors were missing at points of support (blue circles) and the outlookers were not connected to the end truss (yellow circle)
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Wrong – This house was built on a shallow foundation instead of piers; the foundation was undermined by erosion from Hurricane Irma (Vilano Beach, FL)
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Wrong – This metal tie remained embedded in the mortar joint but the smooth-shank nail pulled out from the stud.
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Wrong – This roof has no sheathing, when the metal panels blew off there was no secondary protection
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Wrong – This roof membrane on a low slope roof is fluttering and may fail because it is not fully adhered and deck seams below are not sealed, allowing air to leak up into the assembly while the membrane is pulled up due to negative pressures from wind
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Wrong – Window not protected and failed due to windborne debris in hurricane force winds.
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Wrong-The home was pulled off its masonry pier foundation during a coastal flood due to inadequate pier-to-beam connections.
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Wrong-These masonry pier foundations were twisted and displaced by coastal storm surges in Long Beach, Mississippi.
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Wrong: The fiber-cement siding has cracked due to over-driven nails located too close to the edge of the board; these cracks provide a pathway for bulk water entry and offer little resistance to high winds.