Skip Navigation
Last Visited »

Important Global Message

Maintenance Alert

The Miami-Dade County Portal will be undergoing maintenance starting at 11 p.m. Saturday, May 3 and for all of Sunday, May 4. Intermittent outages may be experienced. We apologize for any inconvenience.

Thank you for your patience as we improve our online services.

Glass

Comparative analysis cannot be included on one Notice of Acceptance (NOA) for impact and non-impact glazed products. Non-impact resistant products and impact resistant products must obtain separate Notice of Acceptance (NOA).

  • Comparative analysis can be performed on an impact resistant glazed product. Comparative analysis can be performed by conforming to the provisions in the Florida Building Code Section 2411.3.2.5 or 2411.3.2.6 as applicable. 

Report the composition description of the material used in the glazing (impact resistant glass)

The following are some acceptable ways:
     1. From the three required impact and cycle samples, you can provide a different manufacturer's glazing into each of the samples.

The procedure followed is that the lower design pressure qualified from the three is what will be reflected on the approval.  If one of the three specimens should fail the tests, three specimens of that type of glazing are to be tested to qualify that glass on the given system.

The determination of which unit or units are to undergo TAS202 testing will depend on the variations of glass type and thickness.

Determination and evaluation of a planned test procedure should be presented to BCCO in the form of a proposal
    2.  If you already have a Notice of Acceptance and you wish to qualify a different impact resistant glazing, you are required to show three samples passing the complete set of TAS201 and TAS203 testing, and testing to TAS202 will depend on the variations of glass type and thickness. You can take advantage in this type of testing by following case #1 above.

Acceptable ways of qualifying different glass-type manufacturers into a glazed impact-resistant product Notice of Acceptance

The following are some acceptable ways:

1. From the three required impact and cycle samples, you can provide a different manufacturer's glazing into each of the samples.

  • The procedure followed is that the lower design pressure qualified from the three is what will be reflected on the approval.  If one of the three specimens should fail the tests, three specimens of that type of glazing are to be tested to qualify that glass on the given system.
  • The determination of which unit or units are to undergo TAS202 testing will depend on the variations of glass type and thickness.
  • Determination and evaluation of a planned test procedure should be presented to BCCO in the form of a proposal

2.  If you already have a Notice of Acceptance and you wish to qualify a different impact resistant glazing, you are required to show three samples passing the complete set of TAS201 and TAS203 testing, and testing to TAS202 will depend on the variations of glass type and thickness. You can take advantage in this type of testing by following case #1 above.

Different levels of reinforcement in the testing of glazed products

The approach is to determine the largest level of reinforcement, which typically corresponds to the highest pressure for the system.  Arrange the units in decreasing level of reinforcement and projected/applicable design pressure.

If non-impact resistant, the following applies:

Test three units of the highest level of reinforcement to the highest design pressure for the system as required in TAS202.  These units are to undergo all of the requirements of TAS202.  Then test one additional sample for each decreased level of reinforcement and to the corresponding determined design pressure.  Each of these additional specimens is to be tested to the structural requirements of TAS202, and depending if other parts of the system are decreased (such as sill heights or glass thickness) the water test will also apply.

If impact resistant, the following applies:

Test one unit of the highest level of reinforcement to the highest design pressure for the system as outlined in TAS202.  This unit is to undergo all of the requirements of TAS202.  Then test one additional sample for each decreased level of reinforcement and to the corresponding determined design pressure.  Each of these additional specimens is to be tested to the structural requirements of TAS202, and depending if other parts of the system are decreased (such as sill heights or glass thickness) the water test will also apply.

Test three units of the highest level of reinforcement to the highest design pressure for the system as required in TAS201 and TAS203.  Then test one additional sample for each decreased level of reinforcement to the corresponding determined design pressure following TAS201 and TAS203.

ASTM E1300

When using ASTM E1300, glass plate dimensions smaller than those covered within the boundaries of each "Glass Thickness Selection Chart are the area where the points corresponding to smaller glass plate sizes are located on a graph, forming a triangle between the discontinued lines of Aspect Ratio 1 and 5 and the vertex or origin of the chart.

Glass Plate Dimensions

 
The graph will be extended to the vertex and glass plate sizes lying inside this area can be qualified for the pressure corresponding to the maximum pressure tested or in a simplified comparative analysis corresponding to the last design pressure curve graphed in the standard. 

  • When using ASTM E1300, The design pressure of an irregular shape glass unit (other than rectangular glass units) shall be that corresponding to the rectangular shape circumscribing the irregular shape. The design pressure of a rectangular glass unit is also applied to any irregular shape glass unit inscribed inside that rectangle. Please note this does not change the requirements of testing shapes to qualify shapes.

Irregular shapes

  • When using ASTM E1300, aspect ratios greater than 5 can be approved provided that one specimen of the greatest aspect ratio and size is tested to the corresponding pressure in ASTM E1300 with an aspect ratio of 5. This corresponds to glass plate sizes that fall in the shaded area of the graph shown below. If approval of such aspect ratio sizes are sought these are to be considered when developing a test plan.


 Aspect ratio greater than 5
 
 

  • When using ASTM E1300, unequal thickness in lights of laminated glass units can be determined by adding the two glass plate thickness' to select the appropriate "Glass Thickness Selection Chart" listed in table 5 of ASTM E1300. Use the lower performing of the two glass heat treatments to select the appropriate "Glass Type (GT) Factor" in Table 1 of ASTM E1300.
  • When using ASTM E1300, unequal heat treatment in lights of laminated glass units, an aspect ratio greater than 5 can be approved provided that one specimen of the greatest aspect ratio and size is tested to the corresponding pressure in ASTM E1300 with an aspect ratio of 5. This corresponds to glass plate sizes that fall in the shaded area of the graph shown below. If approval of such aspect ratio sizes are sought these are to be considered when developing a test plan.


Aspect ratio greater than 5

Back to Top Page Last Edited: Wed Apr 10, 2013 1:58:54 PM
building
 
 
Corner
Corner

You are now leaving the official website of Miami-Dade County government. Please be aware that when you exit this site, you are no longer protected by our privacy or security policies. Miami-Dade County is not responsible for the content provided on linked sites. The provision of links to these external sites does not constitute an endorsement.

Please click 'OK' to be sent to the new site, or Click 'Cancel' to go back.