| Date |
Text |
| 2008-11-12 16:11:43 | PLAN REVIEW UNDER THE 2004 FLORIDA BUILDING CODE & |
| | REFERENCED CODES WITH 2007 REVISIONS, CITY OF WEST PALM |
| | BEACH AMENDMENTS TO CHAPTER 1 (W.P.B.), FLORIDA |
| | ADMINISTRATIVE CODE (F.A.C.), AND FLORIDA STATUTES |
| | (F.S.). |
| | |
| | REVISION TO MECHANICAL PLANS. |
| | *** DENIED *** |
| | |
| | 1) THE FOLLOWING RETURN AIR DUCTS APPEAR TO BE UNDER |
| | SIZED. 8" RETURN FLEX TO MASTER BEDROOM (AHU #2), 10" |
| | RETURN FLEX TO THE LOFT (AHU #3), AND THE 7"X24" CHASE |
| | FOR AHU #1. |
| | |
| | 2) SHOW THE SIZE OF THE DUCT (RIGID FIBROUS GLASS) FROM |
| | AHU #1 TO THE 7"X24" CHASE, PER 2004 FBC/R M1601.1. |
| | |
| | 3) PLEASE SUBMIT MANUAL D CALCULATIONS FOR RESIDENTIAL |
| | DUCT DESIGN (3 SYSTEMS), PER 2004 FBC/R M1601.1 AND FBC |
| | 13-610.1.ABC.1. SEE ATTACHED COPY OF MANUAL D |
| | RECOMMENDED VELOCITY. |
| | |
| | 4) PLEASE SUBMIT A BLOWER PERFORMANCE TABLE OR GRAPH |
| | FOR EACH AHU, PER MANUAL D 5-1. |
| | |
| | 5) PLEASE SUBMIT THE PRODUCT AND PERFORMANCE DATA |
| | SHEETS FOR THE FLEXIBLE DUCT BEING USED, PER 2004 FBC/R |
| | M1601.4. |
| | |
| | NOTICE: 2004 FBC/R M1602.4 BALANCED RETURN AIR. |
| | RESTRICTED RETURN AIR OCCURS IN BUILDINGS WHEN RETURNS |
| | ARE LOCATED IN CENTRAL ZONES AND CLOSED INTERIOR DOORS |
| | IMPEDE AIR FLOW TO THE RETURN GRILL OR WHEN CEILING |
| | SPACES ARE USED AS RETURN PLENUMS AND FIRE WALLS |
| | RESTRICT AIR MOVEMENT FROM ONE PORTION OF THE RETURN |
| | PLENUM TO ANOTHER. PROVISIONS SHALL BE MADE IN |
| | RESIDENTIAL BUILDINGS TO AVOID UNBALANCED AIR FLOWS AND |
| | PRESSURE DIFFERENTIALS CAUSED BY RESTRICTED RETURN AIR. |
| | PRESSURE DIFFERENTIALS ACROSS CLOSED DOORS WHERE |
| | RETURNS ARE CENTRALLY LOCATED SHALL BE LIMITED TO 0.01 |
| | INCH WC (2.5 PASCALS) OR LESS. PRESSURE DIFFERENTIALS |
| | ACROSS FIRE WALLS IN CEILING SPACE PLENUMS SHALL BE |
| | LIMITED TO 0.01 INCH WC (2.5 PASCALS) BY PROVIDING AIR |
| | DUCT PATHWAYS OR AIR TRANSFER PATHWAYS FROM THE HIGH |
| | PRESSURE ZONE TO THE LOW ZONE. |
| | BALANCED RETURN AIR MAY ALSO BE ACHIEVED BY. |
| | (A) TRANSFER DUCTS MAY ACHIEVE THIS BY INCREASING THE |
| | RETURN TRANSFER ONE AND ONE HALF TIMES THE CROSS |
| | SECTIONAL AREA (SQUARE INCHES) OF THE SUPPLY DUCT |
| | ENTERING THE ROOM OR SPACE IT'S SERVING AND THE DOOR |
| | HAVING AT LEAST AN UNRESTRICTED 1 INCH UNDERCUT TO |
| | ACHIEVE PROPER RETURN AIR BALANCE. |
| | (B) TRANSFER GRILLES SHALL USE 50 SQUARE INCHES (OF |
| | GRILLE AREA) TO 100 CFM (OF SUPPLY AIR) FOR SIZING |
| | THROUGH-THE-WALL TRANSFER GRILLES AND USING AN |
| | UNRESTRICTED 1-INCH UNDERCUTTING OF DOORS TO ACHIEVE |
| | PROPER RETURN AIR BALANCE |
| | (C) HABITABLE ROOMS ONLY SHALL BE REQUIRED TO MEET |
| | THESE REQUIREMENTS FOR PROPER BALANCED RETURN AIR |
| | EXCLUDING BATHROOMS, CLOSETS, STORAGE ROOMS AND LAUNDRY |
| | ROOMS, EXCEPT THAT ALL SUPPLY AIR INTO THE MASTER SUITE |
| | SHALL BE INCLUDED. PER 2004 FBC/R M1602.4 . |
| | |
| | MECHANICAL PLAN REVIEW BY; |
| | TOM GORDON (561) 805-6729 |
| | E-MAIL; [email protected] |
