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WO2007044675A1 - Systeme de protection contre le vent et module de ballast de toit - Google Patents

Systeme de protection contre le vent et module de ballast de toit Download PDF

Info

Publication number
WO2007044675A1
WO2007044675A1 PCT/US2006/039411 US2006039411W WO2007044675A1 WO 2007044675 A1 WO2007044675 A1 WO 2007044675A1 US 2006039411 W US2006039411 W US 2006039411W WO 2007044675 A1 WO2007044675 A1 WO 2007044675A1
Authority
WO
WIPO (PCT)
Prior art keywords
roof
bladders
protection system
modules
bladder
Prior art date
Application number
PCT/US2006/039411
Other languages
English (en)
Inventor
Charles D. Hess
Original Assignee
Tricord Hurricane Products, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tricord Hurricane Products, Inc. filed Critical Tricord Hurricane Products, Inc.
Publication of WO2007044675A1 publication Critical patent/WO2007044675A1/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
    • E04H9/14—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate against other dangerous influences, e.g. tornadoes, floods
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather

Definitions

  • the present invention relates to apparatuses and methods to secure and protects buildings and rigid roofs from high winds, and more particularly to a wind protection system and a roof ballast module to protect a building from high winds, such as hurricane winds.
  • hurricane force winds present additional problems compared to other types of wind storms.
  • hurricane winds are more turbulent and sustained than other wind storms.
  • Hurricane winds can last hours at a time while permitting gusts that are 25%-50% higher than the maximum sustained winds.
  • gusts can exceed 200 mph.
  • hurricane winds generate a larger quantity of debris than other wind storms.
  • the debris is carried by the strong winds, which multiply the potential damage that can be caused by the debris. For example, in a 100 mph wind, a 4 ft. by 8 ft. sheet of plywood could be thrown with up to 1100 lbs. of force.
  • the wind protection system includes a plurality of roof ballast modules disposed across a planar section of a rigid roof.
  • the roof ballast modules have a plurality of elongate liquid impermeable bladders.
  • the bladders have a port on one end permitting the interior of the bladder to be filled with a liquid, such as water. Channels may be provided between the bladders permitting fluid communication therebetween.
  • the wind protection system of one embodiment includes a protective shield to protect the building from airborne objects carried by high winds.
  • the protective shield may be secured to roof ballast modules or to the building itself, for example extending from a fascia below the roof.
  • the protective shield may be secured to the ground by an anchor system or one or more anchors.
  • the anchors may include ground screws, weighted bladders, and/or ground pillars, among other devices that may be used to secure the protective shield against high winds.
  • a roof ballast module according to one embodiment of the invention may include a plurality of elongate liquid impermeable bladders.
  • the roof ballast module may include a first port on a top end of one of the bladders permitting the interior of the bladder to be filled with a liquid.
  • An example of one type of port used in the invention may be a valve.
  • Several channels may be provided between the bladders to permit fluid communication between the bladders.
  • Embodiments of the roof ballast module may include a drain valve disposed at the bottom end of a bladder.
  • a second port may be disposed near the top end of another of the elongate bladders to permit fluid spillover from the interior of the bladder to another roof ballast module. In this way several roof ballast modules may be connected and filled through the spillover from the adjacent roof ballast modules.
  • the roof ballast modules and bladders may be formed from first and second panels sealed to one another along a common periphery. Additionally, grommets may be disposed about a periphery of the roof ballast modules for securing the roof ballast modules to one another or the roof. Furthermore, the ports may include threaded water hose connectors in order to facilitate connection to common water hose sources. [0011] With respect to a method of protecting a building from high wind, one embodiment of the invention includes placing a plurality of water impermeable bladder panels on a rigid roof to ballast the roof. The impermeable bladders are filled with a liquid, such as water. Embodiments of the method may also include attaching a protective shield to a periphery of a building. The protective shield is anchored to the ground to secure the protective shield in place against high winds.
  • a new wind protection system and roof ballast module is provided to more effectively protect a roof and a building from high winds, such as hurricane and other storm force winds.
  • the roof ballasts may be filled with a liquid over a large area of the roof to add substantial mass to the roof. The added mass overcomes the lifting forces applied to the roof by high winds to maintain the integrity of roof and the building.
  • FIG. 1 is perspective view of a building having a wind protection system including roof ballast modules and a wind screen according to one embodiment of the invention
  • FIG. 2 is a plan view of a rigid roof depicting several roof ballast modules distributed about a roofing surface according to one embodiment of the invention
  • FIG. 3 is a plan view of a roof ballast module according to one embodiment of the invention.
  • FIG. 4 is an end view of a roof ballast module according to the FIG. 3 embodiment of the invention.
  • FIG. 5 is a perspective view of bladder for securing a protective shield according to one embodiment of the invention.
  • the wind protection system includes a plurality of roof ballast modules 20 distributed about the surface of a planar section of a rigid roof 22. As shown in FIG. 1, other planar sections 24 of the roof may include additional ballast modules 20.
  • the ballast modules are modules of liquid impermeable bladders filled with a liquid, such as water. The ballasts are therefore secure to the roof by the weight of the liquid in the bladders. Although any mass of liquid may be used according to embodiments of the inventions described herein, water is a prevalent and readily available source. Water is therefore described throughout this description for filling the bladders by way of illustration and not limitation.
  • FIG. 2 illustrates the distribution of various shapes and sizes of roof ballast modules 20 distributed about several sloping planar surfaces of a rigid roof 22, 24.
  • the modules include various sizes so that they may be distributed across substantially the entire planar area of the roof surface.
  • the roof ballast modules may comprise 4 ft. by 8 ft. ' modules 20, which may be comprised of five approximately 8 ft. elongate bladders.
  • 4 ft. by 4 ft. square roof ballast modules 25, and 2 ft. by 8 ft. roof ballast modules 21, 2 ft. by 4 ft. roof ballast modules 27, and triangular 2 ft. roof ballast modules 23 are depicted in FIG. 2.
  • the roof is ballasted to protect from the different types of lifting forces on the roof, including negative pressure from wind shear above the roof, positive pressure from wind under the eaves of the building, and wind forces that may penetrate the building and create positive pressure from inside the building.
  • the 4 ft. by 8 ft. embodiment of the roof ballast modules may be expected to hold up to 1,100 - 1 ,200 lbs. of water, thus securing it to the rigid roof by its weight by way of static friction.
  • a protective shield 30 is also provided to protect the building from airborne objects carried by storm winds.
  • the protective shield may be attached to the ballast modules or may be attached to the building, such as at the fascia below the roof.
  • the protective shield may be secured to the ground by way of any of various types of anchors 36 that will hold the protective shield in place against expected high winds.
  • a protective shield must be sufficiently strong to repel flying objects at speeds generated by storm force and hurricane force winds.
  • a protective shield 30 may be made of a light weight and flexible material, typically a net or mesh.
  • the protective shield may be cinched down to the anchors 32, 34, 36. Such attachment may be by way of latches 35, ratcheting devices, bolts, swivels (not shown), and other devices known to those of ordinary skill for securing objects.
  • the protective shield may comprise nylon, blended composites of nylon, rubber, plastic, carbon fiber, or natural materials such as high strength weaves of cotton, wool, jute, etc.
  • a protective shields for this purpose includes polypropylene netting having a mesh size of about 3/8 ⁇ inch square. As the protective shield netting protects the exterior of a building, it may be desirable to employ UV stabilized material to avoid degradation from ultraviolet light.
  • the protective shield 30 may have a series of protective panels 38 at places near windows, doors, etc.
  • one type of anchor illustrated includes ground pillars 34 such as cement/concrete pillars disposed under the ground and including a fastener or latch 35 to connect the protective shield 30 to the ground pillars 34.
  • Another embodiment of the anchor illustrated includes ground screws 36 including a latch 35 to attach the protective shield to the anchor.
  • a third embodiment of the anchors includes liquid bladders 32 (described in more detail below) that hold large masses of water or other mass such as sand, gravel, etc., or combinations of sand, gravel, water, or other mass.
  • FIGS. 3 and 4 illustrate one particular embodiment of a roof ballast module 20.
  • the roof ballast modules 20 includes five elongate bladders 54 disposed parallel to one another.
  • the bladders 54 are in fluid communication with one another by way of communication channels 64 between each of the adjacent bladders.
  • the communication channels 64 are disposed near one end, which is referred to herein as the top end 58 of the bladders 54.
  • first and second valves 50, 52 Disposed just above the communication channels (nearer the top end), are first and second valves 50, 52 which are ports that permit connecting the interior of the bladders.
  • the ports described herein are valves, other ports are within the scope of the invention, for example, capped tubes or sealable fittings may be employed as ports within the scope of the invention.
  • the first valve 50 generally permits filling the interior of the bladder with water.
  • the valve (by way of a hose [not shown] and threaded connector 51, if desired) allows the first bladder to be filled, while water spills over to the next bladder through the communication channel 64.
  • the communication channels 64 allow each bladder to spillover to fill the next until the last bladder is filled.
  • the second valve 52 (when open) permits water to flow out of the last bladder upon completion of the filling all of the bladders through the first valve 50.
  • the second valve 52 may be connected to a first valve (not shown) of another similar roof ballast module (such as shown in FIG. 2) allowing the spillover to fill successive roof ballasts.
  • several roof ballasts 20 FIG.
  • ballast modules 20 may be daisy-chained about the planar surface of a roof 22, and filled though a single liquid supply to one or more of the roof ballast modules 20.
  • the first and second valves may include threaded male 51 and female 53 couplings for connecting to one another and to a water source.
  • the ballast modules may be used on sloping roofs (as shown in FIG.
  • the roof ballast modules 20 may be disposed about the planar surface of a sloping roof such the top end 58 of the bladders is higher than the lower end 60 the bladders. In this way, liquid filling first bladder fills the bladder up to the communication channel first, then spilling over to the next bladder.
  • the first and second valve 50, 52 may be disposed nearer the top end of the roof ballast than the communication channels 64 to permit gravity drain from the first valve 52 through the communication channels.
  • the plurality of elongate bladders 54 may be disposed such that the axial length of the bladders proceeds from a higher elevation to a lower elevation on the roof.
  • the weight of the water mass in the interior of each bladder is distributed at different elevations to reduce the moment of inertia of water at the lower elevation of the bladders.
  • the plurality of elongate bladders 54 were distributed horizontally, the moment of inertia would be higher due to a larger mass in a single bladder being at the at the lower elevation of the bladder.
  • the bladder would be more likely to rotate and roll the roof ballast modules down the roof.
  • Distributing the bladders axially from a higher elevation to a lower elevation therefore redistributes the water mass to overcome the rolling effect, and is a preferred arrangement.
  • other arrangements, including horizontal arrangements are also within the scope of the invention.
  • roof ballast may include grommets 70 disposed about the periphery of the roof ballast module.
  • Grommets permit securing the roof ballast modules to one another, or to the roof itself.
  • any or all of the adjacent modules shown in FIG. 2 may be secured to one another.
  • Some examples of securing the modules to one another includes the use of zip-ties between grommets, while locks, looped wire, ring latches, and other methods of connection are known to those of ordinary skill.
  • the modules could be designed to have interlocking surfaces that permit mating one module to another without additional connectors.
  • modules on either side of a rood line may be secured together, which can assist in keeping the modules in place.
  • each elongate bladder 54 may also include a drain valve 72 disposed at the lower end of the bladders. The drain valve 72 therefore permits gravity drain of water effluent when the roof ballasts are no longer needed for wind protection.
  • a bladder For a flexible bladder, one particular method known to those of ordinary skill includes radio frequency (RF) sealing and heat sealing of thermoplastic sheets of liquid impermeable materials.
  • RF radio frequency
  • two panels 76, 78 may be sealed about the periphery 56 of the module and lengthwise through the inner part of the module to form the plurality of elongate bladders 54 of the roof ballast modules.
  • the communication channels 64 may also be formed by the absence of sealing the panels together between bladders.
  • a material having liquid water impermeability and high strength properties for this application includes UV stabilized polyvinylchloride (PVC) coated nylon mesh.
  • a coating of 24 mil and a weave of about 0.6mm square has high strength properties for holding the mass of water as described in the above embodiments of 4 ft. by 8 ft. modules of five elongate bladders.
  • Other bladders, both rigid and flexible, are known to those of skill in the art, such as plastic tubing, containers, and PVC pipes.
  • potable water as the liquid for filling the roof ballast modules so that adequate supplies of water remain after storms, hurricanes, etc., when regular water supplies may be limited.
  • materials that may be used can include thermoplastics that are approved by the Food and Drug Administration for contact with food substances.
  • Other materials and embodiments of bladders and construction of liquid impermeable bladders are known and may be used, and these examples are given without limitation.
  • valves for filling and draining the bladders may include valves with threaded fittings to attach to common household water hoses or other water supply systems.
  • the valves may include plugs, ball valves, check valves, etc. (not shown), to permit filling and retaining water in modules.
  • the modules may support various attachments for ancillary uses of the water. For example, a shower head attachment can be provided to permit showering water after a storm in the event that regular water supplies are not available.
  • a liquid bladder for use as an anchor for the protective shield 30 is illustrated. Similar to the roof ballast modules, the liquid bladder may comprise thermoplastic panels that are RF or heat sealed.
  • the liquid bladder may also employ thermoplastic materials that are approved by the Food and Drug Administration for contact with food substances so that potable water may be used to fill the liquid bladders.
  • a single fill and drain valve 42 may be included for filling the bladder.
  • the fill and drain valve may include male or female threaded 43 connections for compatibility with regular water hoses.
  • a latch or connector 46 is included to attach the protective shield to the bladder.
  • a wind protection system in accordance with an embodiment of the invention may be installed relatively simply by placing the unfilled ballast modules on the roof and, is desired, securing them together. Then, once in place on the roof, the ballast modules can be filled with water. Filling may be accomplished, for example, with regular water hoses, thus, the system can be installed at low weight and filled to the desired weight once in place.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Environmental & Geological Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)

Abstract

L'invention décrit un système de protection contre le vent, un module de ballast de toit et un procédé pour protéger un bâtiment contre les vents violents. Le système de protection contre le vent comporte une pluralité de modules de ballast de toit disposés en travers d'un toit rigide. Les modules de ballast de toit peuvent inclure plusieurs poches allongées imperméables de liquide. Une vanne permet le remplissage de la poche avec un liquide, comme par exemple de l'eau. Il est également décrit un procédé pour protéger un bâtiment contre des vents violents, qui implique de placer plusieurs panneaux de poches d'eau imperméables sur un toit rigide pour ballaster le toit.
PCT/US2006/039411 2005-10-11 2006-10-10 Systeme de protection contre le vent et module de ballast de toit WO2007044675A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US72515905P 2005-10-11 2005-10-11
US60/725,159 2005-10-11
US11/524,473 2006-09-21
US11/524,473 US20070094972A1 (en) 2005-10-11 2006-09-21 Wind protection system and roof ballast module

Publications (1)

Publication Number Publication Date
WO2007044675A1 true WO2007044675A1 (fr) 2007-04-19

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PCT/US2006/039411 WO2007044675A1 (fr) 2005-10-11 2006-10-10 Systeme de protection contre le vent et module de ballast de toit

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WO (1) WO2007044675A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
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WO2013109682A1 (fr) * 2012-01-17 2013-07-25 Cheh James L Procédé de réalisation d'une structure à double incurvation, et structure à double incurvation réalisée selon ce procédé
US10465375B2 (en) * 2015-02-03 2019-11-05 Lada Cube, LLC Demountable/modular structure system

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EP1287215A4 (fr) * 2000-05-25 2004-07-28 John Repasky Systeme de plate-forme de blocs de lest et son socle de montage
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Publication number Priority date Publication date Assignee Title
US5791090A (en) * 1993-11-19 1998-08-11 Gitlin; Harris M. Variable tension roofing and structural protective harness
US20040047688A1 (en) * 1998-02-13 2004-03-11 U.S. Flood Control Inc. Liquid containment/diversion dike
WO2003090586A1 (fr) * 2002-04-25 2003-11-06 Chaffee Robert B Chambres gonflables reliees de maniere fluidique par valve de non-retour et procede d'utilisation

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