| Date |
Text |
| 2018-05-09 13:47:08 | MECHANICAL PLAN FAIL |
| | |
| | 1 - NEED RETURN AIR FROM BEDROOMS PER 2017 FLORIDA |
| | BUILDING CODE - RESIDENTIAL, SIXTH EDITION |
| | |
| | M1602.3BALANCED 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. |
| | |
| | EXCEPTIONS: |
| | |
| | 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 UNDERCUT TO ACHIEVE PROPER RETURN |
| | AIR BALANCE. |
| | |
| | TRANSFER GRILLES SHALL USE 50 SQUARE INCHES (OF GRILLE |
| | AREA) TO 100 CFM (OF SUPPLY AIR) FOR SIZING |
| | THROUGHTHE-WALL TRANSFER GRILLES AND USING AN |
| | UNRESTRICTED 1- INCH UNDERCUTTING OF DOORS TO ACHIEVE |
| | PROPER RETURN AIR BALANCE. |
| | |
| | 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. |
| | |
| | |
| | 2 - PLEASE SHOW SUPPLY DUCT OFF PLENUM TO MIXING BOX |
| | PER 2017 FLORIDA BUILDING CODE - BUILDING, SIXTH |
| | EDITION |
| | |
| | 107.2.1INFORMATION ON CONSTRUCTION DOCUMENTS. |
| | CONSTRUCTION DOCUMENTS SHALL BE DIMENSIONED AND DRAWN |
| | UPON SUITABLE MATERIAL. ELECTRONIC MEDIA DOCUMENTS ARE |
| | PERMITTED TO BE SUBMITTED WHERE APPROVED BY THE |
| | BUILDING OFFICIAL. CONSTRUCTION DOCUMENTS SHALL BE OF |
| | SUFFICIENT CLARITY TO INDICATE THE LOCATION, NATURE AND |
| | EXTENT OF THE WORK PROPOSED AND SHOW IN DETAIL THAT IT |
| | WILL CONFORM TO THE PROVISIONS OF THIS CODE AND |
| | RELEVANT LAWS, ORDINANCES, RULES AND REGULATIONS, AS |
| | DETERMINED BY THE BUILDING OFFICIAL. |
| | |
| | CHRIS MONTELLO |
| | 561-805-6733 |
| | |
