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There is no limit to the allowable maximum deflection for protection device systems when subjected to large missile impact as long as a build out is part of the approval, and all pertaining tests are performed. In this case, the approval will specify the required spacing away from the product being protected. Note that in the case of build out, lateral protection will be needed.
- When subjected to static air loading the maximum deflection of a shutter in the direction of the glass or object it is protecting when subject to static air pressure shall be no more that 2" or L/30, whichever is less. However, the minimum distance of the shutter to the glass or object it is protecting, when subject to static air pressure, shall in no case be less than 1".
- Roll-up shutters and accordion shutters do not have to be operable after testing, but they must be operable prior to testing. The whole system must be mounted, as it would be used in the field.
- In high rise buildings the loading criteria for protection devices must be capable of withstanding the appropriate loading per ASCE 7 while testing in accordance with the set protocols TAS201-94, TAS202-94, and TAS203-94 as applicable.
- Several manufacturers of storm panels who have identical production machines may apply for different product approvals relying on a common test. Manufacturers may enter into an agreement to apply for approval relying on a "common test". Each manufacturer upon application must reference the common test and provide a specimen for impact testing. Manufacturers under this agreement shall contact the Product Control Section to witness the production of each of the panels to be tested. Performing the testing procedure without prior notification and witnessing of fabrication by Miami-Dade will result in an invalid test for Product Approval.
- A poured concrete header may be used in lieu of concrete blocks for configuration #2 in Figure 1 of TAS201.
- Storm shutters (storm panels and accordions) may be tested with lateral supports. However, by testing with lateral supports, the approval will be limited to the width tested. By testing without lateral support the approval will have no width limit (width being the dimension perpendicular to the supported ends).
- For one storm panel model design, test 3 specimens, each consisting of 3 panels. Set up is as shown in the protocols where each specimen requires the mountings indicated.
- The failure criteria measurements for storm panels are taken after TAS201 and TAS203 tests are performed. The panels must not have a separation greater than L/180 or 1/2 inch; whichever is less. The length of the separation shall not be greater than 36 inches or 40% of the span; whichever is less.
- For testing an accordion shutter, the minimum width requirement is 3 feet provided the lateral sides are not anchored; however, be aware that the maximum anchoring distance this will allow approval for is 18" on center. If approval for greater anchoring intervals is desired, a wider span will be needed.
- To prevent the accordion shutter from 'closing' during testing, 'blocking' pins (pins, nails, or screws) can be inserted on the top and bottom tracks.
- When testing an accordion shutter that is intended to be installed with center locking devices, the center locking device should be tested. At least one of the three specimens tested must include the center-locking device for the product to be approved.
- The height requirement for testing on a roll-up shutter is seven (7) feet.
- A roll-up shutter that can be installed in the field to roll inward or outward must be tested for both applications. It must be impacted for both applications; requiring an additional specimen.
- Comparative analysis will be allowed for storm bars when subjected to static air pressure. (See requirements contained in the shutter checklist)
- Storm bars on roll-up shutters have to be impacted.
Impact locations for storm panels
They are to be impacted as shown below.
Large missile impact locations when testing to TAS201
See diagrams below.
No Straps or Bolts:
Single Strap or bolts:
Multiple Straps or Bolts:
Impact locations for accordion shutters when the specimens are center locking
The impacts on accordion shutters shall be at the valleys. When a center lock is used the following figure shows the impact locations. (The "x" marks impacts to valleys, and when on the center locking strip the impact must be 2” below the lock.)
Shutter testing with an anchor that has not been issued an NOA
Approval can include the anchor tested, but the anchor can only be used for the installation of that particular shutter. If the anchor manufacturer applies for and obtains a component approval, all shutters meeting the load requirements of the anchor's component approval may use that anchor. Therefore, a shutter that was tested with anchor "X" may only be installed with anchor "X". Only if anchor "Y" has product approval will the above shutter be able to use anchor "Y"; provided anchor "Y" has equivalent or higher performance.Back to Top Page Last Edited: Wed Apr 10, 2013 1:59:44 PM
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