| Date |
Text |
| 2016-12-30 17:29:33 | PLAN |
| | REVIEW COMMENTS |
| | |
| | 1ST REVIEW: FBC FIFTH EDITION (2014) |
| | ROBERT MCDOUGAL, CBO |
| | COMMERCIAL COMBINATION PLANS EXAMINER |
| | (561) 805-6714 |
| | [email protected] |
| | |
| | DENIED BY MECHANICAL |
| | PLEASE ADDRESS THE ITEMS NOTED BELOW: |
| | |
| | 1) THERE IS NO RETURN SHOWN ON THE PLANS FOR BEDROOM #1 |
| | ON THE FIRST FLOOR. 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 BOTH |
| | RESIDENTIAL AND COMMERCIAL 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. |
| | |
| | 2) REVISE THE EQUIPMENT SIZING CALCULATIONS FOR UNIT 2, |
| | USING THE EAST WALL WITH OPENINGS INSTEAD OF THE WEST |
| | WALL. FBC ENERGY CONSERVATION SECTION 405 |
| | |
| | 3) THE PLANS NEED TO SPECIFY THAT THE DOORS TO THE |
| | AIRHANDLER CLOSET ARE REQUIRED TO BE LOUVERED FOR |
| | RETURN AIR. FBC 107.2.1 |
| | |
| | 4) THE 10 " DIAMETER RETURN AIR TRANSFER DUCT SERVING |
| | THE MASTER BEDROOM IS NOT ADEQUATE FOR ALL OF THE |
| | SUPPLY AIR IN THE MASTER BEDROOM. IT APPEARS THAT A 14" |
| | DIAMETER WOULD BE REQUIRED. M1602.4 BALANCED RETURN |
| | AIR. EXCEPTIONS: |
| | |
| | 1. TRANSFER DUCTS MAY ACHIEVE THIS BY INCREASING THE |
| | RETURN TRANSFER 11/2 TIMES THE CROSS SECTIONAL AREA |
| | (SQUARE INCHES) OF THE SUPPLY DUCT ENTERING THE ROOM OR |
| | SPACE IT IS SERVING AND THE DOOR HAVING AT LEAST AN |
| | UNRESTRICTED 1 INCH (25 MM) UNDERCUT TO ACHIEVE PROPER |
| | RETURN AIR BALANCE. |
| | |
| | 2. TRANSFER GRILLES SHALL USE 50 SQUARE INCHES (32 258 |
| | MM2) (OF GRILLE AREA) TO 100 CFM (OF SUPPLY AIR) FOR |
| | SIZING THROUGH-THE-WALL TRANSFER GRILLES AND USING AN |
| | UNRESTRICTED 1-INCH (25 MM) UNDERCUTTING OF DOORS TO |
| | ACHIEVE PROPER RETURN AIR BALANCE. |
| | |
| | 3. 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. |
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