27 April 2007
25 April 2007
23 April 2007
19 April 2007
Background On Testing & Standards
Today, many products are available that have been tested for windborne debris impact and cyclic wind loading. Several test standards exist including: 1]ASTM E1996 Standard Specification for Performance of Exterior Windows, Glazed Curtain Walls, Doors and Storm Shutters Impacted by Wind-borne Debris in Hurricanes (written by the American Society of Testing and Materials) 2] PA 201 Impact Test Procedures (written by Miami-Dade County Building Code Compliance Office) 3] SSTD 12 TEST Standard for Determining Impact Resistance from Wind-borne Debris (written by the Southern Building Code Congress International, Inc.
Each of these test standards is based on similar testing with slight variations. The tests consist of two parts: impact testing and cyclic wind loading.
The impact test consists of shooting objects at a series of specimens. If the product is going to be installed above 30 feet, it has small objects fired at the product simulating roof ballast rock and other small debris that would be picked up and carried by the wind higher than 30 feet above the ground. If the product is going to be installed below 30 feet, it has a 2x4 fired at the product simulating larger objects that would be picked up and carried by the wind along and close to the ground, but too heavy to get high into the air.
Following the impact test, the series of impacted specimens are put through cyclic wind pressure loading, both positive and negative pressures. The cyclic wind pressure loading is intended to simulate wind pressures created by a hurricane from approach through departure.
The testing results in two designations: Impact Resistance — Yes or No
Design Pressure Rating — in pounds per square foot (both negative and positive) If a window product is not intended to pass the impact portion of the test, it will still be tested with cyclic wind pressure loading and be assigned a Design Pressure Rating (positive and negative pressures). Because it is not deemed to be impact resistant, it will still require the protection of a hurricane shutter or storm panel.
A common misconception is that a window or door product can be designated to withstand a specified wind speed. The products are given a design pressure rating not a “wind speed rating”. A Category 5 hurricane creates different pressures, both positive and negative, on different surfaces of a structure. So, depending on where the window or door is placed, it may experience higher or lower wind pressures under the same wind speed conditions. The higher the Design Pressure Rating a product receives, the higher the cyclic wind pressures to which it was tested.
Whether impact resistant windows and doors, shutter systems, or temporary storm panels are selected for hurricane protection, it is imperative to select products that have been tested according to a code-approved standard with tests that are independently verified. Installing untested products or products that have been tested without independent verification may result in a product that does not provide the needed protection.
ASCE 7-98 recognizes the option of designing for higher internal pressure as an alternative to designing with impact protection (shutters or impact-resistant glass). Blueprint for Safety recommends designing with impact protection because while designing for internal pressure may protect the overall structure, it will not prevent flying debris from breaking windows, causing building damage or allowing significant water and wind infiltration into the house. Blueprint recommends impact protection as the optimal way to protect lives and property.
Blueprint recommends that whenever structural components are built, added or modified, they should be designed using rational analysis based on wind loads calculated according to ASCE 7-98 using a basic wind speed defined by ASCE 7-98 but no less than 120 mph. The architectural details in the manual are engineered to 140 mph for illustration purposes, but will require modifications to meet the 150 mph requirements in certain coastal sections of Miami-Dade or Monroe County.
It is recognized that a large number of alternatives are available to a designer or builder for providing wind resistance. The Blueprint guidelines are not intended to prevent the use of such alternative materials or methods, permitted in the statewide Florida Building Code. The methods presented in this guide provide wind-resistant designs and construction details for one- and two-story residential homes of conventional wood-framed and masonry construction typical in Florida.
The wind loads indicated in the details apply specifically to a building having a width of 30 feet and a length of 60 feet with story heights of 10 feet. The structure has gable end walls with a roof pitch of 4:12; having a slope of 18 degrees. In addition, the design parameters used in conjunction with ASCE 7-98 for residential design are: Design wind speed of 140 mph.
Exposure B — for urban and suburban areas, wooded areas, or other terrain with numerous closely spaced obstructions having the size of single-family dwellings or larger. The unified Florida Building Code specifies the use of Exposure B for all residential construction except seaward of the coastal construction line.
Building is rectangular and regular in shape.
Building is enclosed.
Building is a low-rise building.
Building has simple diaphragms that transmit wind loads through floor and roof diaphragms to the vertical main wind force resisting system.
Recommended amounts of food and water based on your family information.
Contact information for your local emergency responders and maps of your local Evacuation Zones
Checklists of important steps to take before, during, and after a disaster!
Remember, the best way to make your family and home safer is to be prepared before a disaster happens.
Use the following link to complete YOUR Family Disaster Plan http://floridadisaster.org/family/
Aluminum storm panels are the least expensive way to protect your property from hurricane force winds. We have three types of storm panels systems:.060 Aluminum, .050 Aluminum, and 20 gauge steel. These storm panels are approved by Dade County .
Accordion Shutters are designed to cover almost any type of opening and are ideal for larger openings such as sliding doors and across balconies. These shutters are excellent for store fronts and offer the toughest means of security for your home and business.
Accordion shutters offer an affordable, durable means of protection against storms and intruders. These shutters are equipped with a T-Handle lock on our standard shutter and a push button lock on our new High Velocity Accordion Shutter. Permanently fastened to your home or business, the accordion shutters are easily operated by one person from inside or outside
Our 950 series accordion shutters meet and exceed the impact and wind load requirements set by Dade County Florida. This ASSA Bertha accordion shutter comes with a 5-point locking system and it can also have a security key lock or thumb screw lock. The key locking style is our most common style. These shutters can easily lock from the outside or the inside. Standard Colors: White, Ivory, Beige, Bronze
Our 1050 series new High Velocity accordion shutter is the newest addition to our product line. The High Velocity accordion shutter has a unique design. This shutter is All Florida Code Approved and is approved by IBC - International Building Code. This shutter exceeds the toughest impact and wind loads requirements. It comes standard with a push button key lock for outside locking and a turn knob button for inside locking. With its new design, the High Velocity accordion shutter has a very sleek look, and with all the components that come with it, this is the best accordion shutter on the market today. Standard Colors: White, Ivory, Beige, Bronze
Rolling Shutters are the most convenient and easiest system to operate. Rolling shutters are customized to fit any application providing extraordinary strength and stability for hurricane and security protection. Especially in coastal areas, these products are becoming more and more popular due to their ability to withstand hurricane force winds and flying debris. They can be operated manually or motorized and can also have an emergency manual override.
Rolling shutters will reduce air conditioning and heat costs, lower noise by up to 70 percent, and protect furniture exposed to direct sunlight.
There are several types of rolling shutters which are designed for your specific needs. Hurricane approved, interior counters, product safe cases, garage door type applications, and security storefronts.
1200 Series Rolling Shutter - The Newest Shutter On The Market Today
55mm Slats Curved allows us to use smaller housings (box).
Tracks are equipped with double felt grooves for future felt replacement.
Storm Bars special design is stronger than others twice the size.
The Storm Bars also are equipped with felt to protect the slats.
Top Header unique design allows for cleaner and more uniform finish.
Bahama shutters are an attractive alternative for hurricane protection. There are three types of bahamas:
- very strong extruded aluminum heavy shutter approved by Dade County.
- extruded aluminum shutter not as heavy as the first one but a very nice product.
- light weight bahama shutter made out of roll formed aluminum.
17 April 2007
Welcome to the THE HURRICANE POLICE, LLC blog.
The purpose of this blog is to provide information to our customers and the general public regarding "Hurricane, Storm & Home Security Protection" as well as current and topical information regarding existing weather conditions in hurricane season. We sell and install hurricane and home security products to protect you and your property, home or business, during hurricanes and other disasters. More information of our product lines and services will be covered under additional posts to the blog.