| Date |
Text |
| 2008-06-16 16:51:00 | REVIEW #: REVISION 1 |
| | ACTION: DENIED |
| | |
| | FBC 2004 CODE FAMILY W/ 2007 SUPPLEMENTS |
| | FBC CH.1 AS AMENDED BY THE CITY OF WEST PALM BEACH |
| | |
| | 1. THE AIR DISTRIBUTION SYSTEMS (DUCTWORK) FOR THE NEW |
| | AC SYSTEMS ARE SHOWN PENETRATING MANY RATED WALL |
| | ASSEMBLIES IN MANY LOCATIONS THROUGHOUT THE WORK AREA |
| | WITHOUT PROTECTION OF THE PENETRATIONS. FIRE DAMPERS |
| | SHALL BE PROVIDED AT THE LOCATIONS PRESCRIBED IN |
| | ACCORDANCE WITH FBCM 607.5. THE SPECIFIC LOCATION AND |
| | INSTALLATION DETAILS OF EACH FIRE DAMPER SHALL BE SHOWN |
| | AND PROPERLY IDENTIFIED ON THE BUILDING PLANS BY THE |
| | DESIGNER IN ACCORDANCE WITH FBCM 607.8. |
| | NOTE: PLEASE SEE MARKED-UP PAGE M-1 FOR EXAMPLES OF |
| | LOCATIONS. |
| | |
| | 2. PAGE M-1 FLOOR PLAN PROPOSES THE USE OF RETURN AIR |
| | PLENUM CEILINGS WITH CENTRALIZED RETURN AIR INTAKES. IN |
| | MANY LOCATIONS RETURN AIR GRILLS ARE SHOWN IN THE |
| | CEILING TO ALLOW AIR TO TRAVEL BACK TO THE AC UNIT. |
| | HOWEVER, IN MANY LOCATIONS THE AIR WILL NOT BE ABLE TO |
| | TRAVEL BACK TO THE UNIT BECAUSE THE SPACE IS ISOLATED |
| | FROM THE UNIT BY FIRE RATED PARTITIONS WHICH GO FROM |
| | FLOOR TO UNDERSIDE OF THE ROOF. IT IS NOT POSSIBLE TO |
| | HAVE BALANCED RETURN UNDER THESE CIRCUMSTANCES. |
| | PROVISIONS SHALL BE MADE IN BOTH RESIDENTIAL AND |
| | COMMERCIAL BUILDINGS TO AVOID UNBALANCED AIR FLOWS AND |
| | PRESSURE DIFFERENTIALS CAUSED BY RESTRICTED RETURN AIR |
| | IN ACCORDANCE WITH FBCM 601.4. |
| | |
| | 3. A NEW PLENUM SPACE ABOVE THE CEILING IS BEING |
| | CREATED WHERE ONE DID NOT PREVIOUSLY EXIST. THE |
| | EXISTING CONDITIONS FOR EXTERIOR WALLS AND ROOF DECK |
| | ARE NOT KNOWN AND THE INFORMATION HAS NOT BEEN PROVIDED |
| | AS PART OF THIS REVISION. PLEASE ADDRESS THE FOLLOWING |
| | ISSUES: |
| | A) MATERIALS EXPOSED WITHIN PLENUMS SHALL BE |
| | NONCOMBUSTIBLE OR SHALL HAVE A FLAME SPREAD INDEX OF |
| | NOT MORE THAN 25 AND A SMOKE-DEVELOPED INDEX OF NOT |
| | MORE THAN 50 WHEN TESTED IN ACCORDANCE WITH ASTM E 84. |
| | FBCM 606.2.2.1. |
| | B) CAVITIES DESIGNED FOR AIR TRANSPORT SUCH AS |
| | MECHANICAL CLOSETS, CHASES, AIR SHAFTS, ETC. SHALL BE |
| | LINED WITH AN AIR BARRIER AND SEALED IN ACCORDANCE WITH |
| | SECTION 603.9 AND SHALL BE INSULATED IN ACCORDANCE WITH |
| | TABLE 13-410.1.ABC.2.2 OR TABLE 13-610.1.ABC.2.1 OF |
| | CHAPTER 13 OF THE FLORIDA BUILDING CODE, BUILDING. THIS |
| | INCLUDES EXTERIOR WALLS WHICH ARE EXPOSED TO THE |
| | PLENUM. SEE FBCM 603.9.1 FOR APPROVED AIR BARRIERS. |
| | C) BUILDING CAVITIES BENEATH A ROOF DECK THAT WILL BE |
| | USED AS RETURN AIR PLENUMS SHALL HAVE AN INSULATED ROOF |
| | WITH THE INSULATION HAVING AN R-VALUE OF AT LEAST R-19. |
| | FBCM 603.8. |
| | |
| | 4. MECHANICAL EQUIPMENT, APPLIANCES AND SUPPORTS THAT |
| | ARE EXPOSED TO WIND SHALL BE DESIGNED AND INSTALLED TO |
| | RESIST THE WIND PRESSURES AS DETERMINED IN ACCORDANCE |
| | WITH THE FLORIDA BUILDING CODE, BUILDING PER FBCM |
| | 301.13. PROVIDE THE FOLLOWING: |
| | A) DETAIL FOR ATTACHMENT OF ROOF CURBS TO BUILDING |
| | STRUCTURE AND ROOFTOP APPLIANCES TO ROOF CURBS WITH |
| | SUPPORTING WIND LOAD CALCULATIONS. THIS INCLUDES |
| | ROOFTOP AC UNITS AND EXHAUST FANS. |
| | B) SUBMITTAL DATA FROM ROOFTOP AC UNIT AND EXHAUST FAN |
| | MANUFACTURER SHOWING THESE APPLIANCES ARE DESIGNED AND |
| | MANUFACTURED TO RESIST ANTICIPATED WIND PRESSURES. |
| | |
| | 5. SHOW MEANS AND LOCATION OF CONDENSATE DISPOSAL. |
| | CONDENSATE FROM ALL COOLING COILS AND EVAPORATORS SHALL |
| | BE CONVEYED FROM THE DRAIN PAN OUTLET TO AN APPROVED |
| | PLACE OF DISPOSAL. CONDENSATE SHALL NOT DISCHARGE INTO |
| | A STREET, ALLEY OR OTHER AREAS SO AS TO CAUSE A |
| | NUISANCE IN ACCORDANCE WITH FBCM 307.2.1. |
| | |
| | 6. AUXILIARY DRAIN PROTECTION IS REQUIRED ON ROOFTOP AC |
| | UNITS IN ACCORDANCE WITH FBCM 307.2.3. THIS MAY BE |
| | ACCOMPLISHED BY INSTALLING A WATER LEVEL DETECTION |
| | DEVICE INSIDE THE UNIT IN THE PRIMARY DRAIN PAN. |
| | |
| | 7. PROVIDE COOLING LOAD CALCULATIONS FOR NEW AC SYSTEMS |
| | IN ACCORDANCE WITH FBCB 13-407.1.ABC.1. |
| | |
| | 8. FRESH AIR SCHEDULES ON REVISED M-3 STILL SHOWS AHU-1 |
| | AND AHU-2 WHEN THESE UNITS HAVE BEEN REPLACED. PROVIDE |
| | OUTSIDE AIR SCHEDULE WHICH CORRESPONDS WITH THE NEW |
| | ROOFTOP UNIT SCHEDULE IN ACCORDANCE WITH FBCM TABLE |
| | 403.3. |
| | |
| | 9. SHUTOFF DAMPER CONTROLS ARE REQUIRED. SHOW |
| | COMPLIANCE WITH FBCB 13-409.1.ABC.3.3. NOTE #13 CALLS |
| | FOR MOTORIZED DAMPERS TO CLOSE WHEN UNITS TURN OFF. |
| | THIS CODE SECTION REQUIRES THE VOLUME DAMPERS TO BE |
| | CLOSED WHENEVER BUILDING IS IN UNOCCUPIED MODE, |
| | REGARDLESS OF WHETHER OR NOT THE UNITS ARE RUNNING. |
| | THIS MAY BE ACCOMPLISHED IN CONJUNCTION WITH OFF-HOUR |
| | CONTROLS AS REQUIRED BY FBCB 13-407.1.ABC.2.4. SHOW |
| | COMPLIANCE WITH THESE SECTIONS. |
| | |
| | IF YOU HAVE ANY QUESTIONS PLEASE CONTACT: |
| | RONALD J. REGUEIRO |
| | 561.805.6719 |
| | [email protected] |
