| Date |
Text |
| 2021-09-21 15:49:26 | THIS PLAN WAS REVIEWED AND FAILED BY PETER LEDUC, FIRE |
| | MARSHAL, WITH THE FOLLOWING COMMENTS: |
| | |
| | |
| | 1) THERE IS AN INDICATION OF A PROPOSED WATER CURTAIN |
| | AT A GLASS WALL & DOOR. |
| | |
| | THIS PROPOSED INSTALLATION A MISAPPLICATION FO THE CODE |
| | AND IS NOT AAPPROVED. |
| | |
| | THERE IS ALSO A GLASS DOOR PROPOSED. THIS GLASS DOOR |
| | MUST BE ADDRESSED SEPARATELY. |
| | |
| | |
| | PER NFPA 13 |
| | |
| | 8.15.26* SPRINKLER-PROTECTED GLAZING. |
| | WHERE SPRINKLERS ARE USED IN COMBINATION WITH GLAZING |
| | AS AN ALTERNATIVE TO A REQUIRED FIRERATED |
| | WALL OR WINDOW ASSEMBLY, THE SPRINKLER-PROTECTED |
| | ASSEMBLY SHALL COMPLY WITH THE |
| | FOLLOWING: |
| | (1) SPRINKLERS SHALL BE LISTED AS SPECIFIC APPLICATION |
| | WINDOW SPRINKLERS UNLESS THE STANDARD |
| | SPRAY SPRINKLERS ARE SPECIFICALLY PERMITTED BY THE |
| | BUILDING CODE. |
| | (2) SPRINKLERS SHALL BE SUPPLIED BY A WET-PIPE SYSTEM. |
| | (3) GLAZING SHALL BE HEAT-STRENGTHENED, TEMPERED, OR |
| | GLASS CERAMIC AND SHALL BE FIXED. |
| | (4) WHERE THE ASSEMBLY IS REQUIRED TO BE PROTECTED FROM |
| | BOTH SIDES, SPRINKLERS SHALL BE |
| | INSTALLED ON BOTH SIDES OF THE GLAZING. |
| | (5) THE USE OF SPRINKLER-PROTECTED GLAZING SHALL BE |
| | LIMITED TO NON-LOAD-BEARING WALLS. |
| | (6) THE GLAZED ASSEMBLY SHALL NOT HAVE ANY HORIZONTAL |
| | MEMBERS THAT WOULD INTERFERE WITH UNIFORM |
| | DISTRIBUTION OF WATER OVER THE SURFACE OF THE GLAZING, |
| | AND THERE SHALL BE NO OBSTRUCTIONS |
| | BETWEEN SPRINKLERS AND GLAZING THAT WOULD OBSTRUCT |
| | WATER DISTRIBUTION. |
| | (7) THE WATER SUPPLY DURATION FOR THE DESIGN AREA THAT |
| | INCLUDES THE WINDOW SPRINKLERS SHALL |
| | NOT BE LESS THAN THE REQUIRED RATING OF THE ASSEMBLY |
| | |
| | ADDITIONALLY, THIS PROPOSED GLASS WALL IS A 2HR |
| | FIREWALL, NOT A FIRE BARRIER. THIS ALTERNATIVE |
| | PROTECTION IS NOT ALLOWED ON FIREWALLS. |
| | |
| | THE FRAME OF THE PROPOSED GLASS WALL MUST ALSO BE |
| | RATED. |
| | |
| | ADDITIONAL INFO: |
| | |
| | WHEN IT COMES TO THE GLASS ASSEMBLIES, THERE ARE SIX |
| | ITEMS THAT MUST BE CONSIDERED. A DESIGN MUST TAKE NOTE |
| | OF GLASS SIZE, GLAZING TYPE, GLAZING FRAMES, HORIZONTAL |
| | MULLIONS, AND OPENINGS AND PENETRATIONS. |
| | |
| | 1. THE SIZE OF THE GLASS IS BASED ON FIRE TESTING AND |
| | SPRINKLER LIMITATIONS. THE GLASS HEIGHT CANNOT EXCEED |
| | 13 FT, AND THERE IS NO LIMITATION TO THE LENGTH OF THE |
| | WINDOW AS THE WINDOW SPRINKLER SPACING CAN MEET THE |
| | INSTALLATION REQUIREMENTS OF THE MANUFACTURER?S |
| | LISTING. |
| | 2. WINDOWS INTENDED TO BE PROTECTED BY SPRINKLERS MUST |
| | BE VERTICAL. SLOPED AND CURVED GLASS CANNOT BE |
| | PROTECTED BY WINDOW SPRINKLERS. |
| | 3. WHEN WINDOW SPRINKLERS ARE UTILIZED IN FIRE |
| | SEPARATIONS, THE GLASS |
| | MUST BE 1/4-IN. THICK AND HEAT STRENGTHENED OR |
| | TEMPERED. |
| | 4. WINDOW FRAMES SHALL BE LISTED WITH THE SAME |
| | FIRE-RESISTANCE RATING AS THE GLASS; THIS IS OFTEN AN |
| | OVERLOOKED ITEM. |
| | 5. WHEN DEALING WITH WINDOW SPRINKLERS, HORIZONTAL |
| | MULLIONS ARE IN ESSENCE AN OBSTRUCTION TO THE |
| | SPRINKLER?S SPRAY PATTERN AND PREVENT THE ABILITY FOR |
| | THE WATER TO RUN DOWN THE GLASS FACE. THE INTENT OF A |
| | WINDOW SPRINKLER IS TO COMPLETELY COAT THE GLASS WITH A |
| | WATER SPRAY IN ORDER TO KEEP THE GLASS FROM FAILING DUE |
| | TO HOT SPOTS. (SEE FIGURE 1.) |
| | 6. WINDOW SPRINKLERS ARE ALSO ONLY INTENDED TO PROTECT |
| | FIXED GLASS. OPERABLE WINDOWS CAN NOT BE PROTECTED. |
| | DOORS IN THESE FIRE PARTITIONS MUST BE TREATED |
| | SEPARATELY. |
| | |
| | |
| | 2) WHEN RESUBMITTING, PLEASE PROVIDE PLAN SHEET |
| | REVISION CLOUDS OR NUMBERED NARRATIVE RESPONSES TO THE |
| | ABOVE. |
| | |
| | |
| | 3) ADDITIONAL COMMENTS MAY BE PROVIDED ON THE |
| | RE-SUBMITTAL OF THE ABOVE. |
| | |
| | |
| | PETER LEDUC |
| | FIRE MARSHAL |
| | 561-804-4709 |
| | [email protected] |
| | |
