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N N LEN \ r') O SM C\- N Eel o � 03 0 , - I ijbl j i Flpl�'1 rl y it ,.I s r i r,'- : 7 O O �)711 --- - - _ _ I FD I I ' lij xo" I.? ail I N HVAC DEMOLITION PLAN SCALE: %" = 1'- 0" 700 O 300 � --------- --707------- ♦� OI 250(2) I 1 300 O SCOPE OF WORK 100 20500 I v 100 I - U P U (�) P t 0 4 0 ! i n t *'-"4 r- HVAC PLAN - NEW WORK SCALE: %" = 1' - C" T UTILIZE EXISTING ROOFTOP ABANDONED EXHAUST FAN CURB FOR NEGATIVE PRESSURE FAN RELIEF. O AHU-20 OUTSIDE AIR �o AHU-20 TOTAL SUPPLY AIR i i t_I - - IL— - I IL O FE T FD GENERAL DEMOLITION NOTES: 1. PRIOR TO DEMOLITION, MEASURE AND RECORD AIR & WATER QUANTITIES IN UTILITIES REQUIRED TO MAINTAIN OPERATION WITH -IN AND BEYOND 1=ACH DEMOLITION PHASE UNTIL AFFECTED AREAS ARE DEMOLISHED. MAINTAIN THESE QUANTITIES THROUGHOUT EACH DEMOLITION PHASE. 2. MAINTAIN EXISTING AIR HANDLING UNIT (AHU-20) IN OPERATION UNTIL. ITS RESPECTIVE DEMOLITION PHASE IS COMPLETE. BLANK OFF AND SEAL RETURN AIR INTAKES SERVING EACH DEMOLISHED AREA IN ORDER T3 PREVENT GENERATED CONSTRUCTION DEBRIS FROM BEING RECIRCULATED TO OCCUPIED SPACES DURING DEMOLITION --CONSTRUCTION PHASE. BLANK OFF AND SEAL ANY SA, RA AND/OR EA DUCTS BEING DEMOLISHED AND REMAINING WITHIN THE CONSTRUCTION AREA. 3. MAINTAIN NEGATIVE RELATIVE AIR PRESSURE IN DEMOLITION PHASE AREA. MINIMUM HEPA-FILTERED EXHAUST AIR QUANTITY SHALL BE 0.5 TO 0.75 CFM/SQ.FT. UTILIZE MULTIPLE NEGATIVE AIR UNITS, AS NECESSARY, TO MAINTAIN NEGATIVE PRESSURE. PROVIDE REQUIRED MAKE-UP AIR FROM A SEPARATE SOURCE. FANS IDENTIFIED TO BE DEMOLISHED, IN DEMOLITION AREA, AND/OR=XISTING ROOF EXHAUST FANS AND THEIR ROOF OPENINGS MAY BE UTILIZED FOR AIR DISCHARGE UNTIL DEMOLITION PHASE IS COMPLETE. DO NOT UTILIZE EXISTING EXHAUST RISERS THAT SERVE OTHER SPACES OR OTHER LEVELS IN BUILDING. 4. VERIFY NEGATIVE RELATIVE AIR PRESSURE IN THE CONSTRUCTION SPACE BY PROVIDING A MAGNAHELIC GAUGE AND MAINTAINING A WRITTEN LOG, TAKEN AT REGULAR INTERVALS, POSTED FOR REVIEW AT SITE OF CONSTRUCTION. 5. DEMOLISH ALL DUCTWORK, PIPING AND ANCILLARY DEVICES WITHIN AREA OF PHASING PLAN UNLESS OTHERWISE NOTED. ALL BRANCH DUCTS BEING OPENINGS PATCHED, SEALED AND INSULATED TO MATCH EXISTING DUCTWORK. DEMOLISHED FROM MAIN TRUNK DUCTS SHALL HAVE BRANCH CONNECTION 6. DEMOLISH ALL ABANDONED DUCTWORK, DAMPERS, PIPING AND ANCILLARY WALLS TO MATCH EXISTING OR NEW CONSTRUCTION, AS PROJECT DICTATES. DEVICES IN DEMOLITION AREA UNLESS OTHERWISE NOTED. PATCH AFFECTED 7. PRIOR TO DEMOLITION, MEASURE AND RECORD AIRFLOW AT POINTS LISTED O THRU �o SUBMIT REPORT TO ARCHITECT FOR EVALUATION PRIOR TO NEW CONSTRUCTION. KEYED NOTES: OPROVIDE SIX (6) TYPE KA 24x24 PERFORATED SUPPLY AIR GRILLES MOUNTED IN CEILING. BALANCE TO 250 CFM EACH. SEE SCHEDULE FOR DETAILS. 02 BALANCE TO NEW VALUE SHOWN ON PLAN. 03 VERIFY AHU-20 IS BALANCED TO A MINIMUM OF 20% OA. 04 EXISTING, AVERAGING TEMPERATURE SENSORS TO CONTROL SPACE TEMPERATURE(S). _ __ _____ L ----ij ;x ,_ ROOM AIR CHANGE CALCULATION CATH LAB # 1 - REQ ACH = 15 (TOTAL AIR) / 3 (OUTSIDE AIR) ROOM AREA = 500 SO FT CEILING HEIGHT = 9'-3" VOLUME = 500 SO FT x 9.25 FT CLG = 4625 CU FT (CALCULATION IS BASED ON ENTIRE ROOM AT THE HIGHEST CEILING LEVEL) AIR CHANGE _ (1500 CFM x 60) / 4625 CU FT= 19.4 ACH CORRIDOR- REQ ACH = 2 (TOTAL AIR) / NONE (OUTSIDE AIR (AREA OUTSIDE OF CATH LAB) ROOM AREA = 520 SO FT CEILING HEIGHT = 8'-0" VOLUME = 520 SO FT x 8 FT = 4160 CU FT AIR CHANGE _ (600 CFM x 60) / 4160 CU FT= 8.7 ACH design Heery International Inc. 4700 Millenia Boulevard, Suite 550, Orlando, Florida 32839 407.992.6300 EB 0005176 Seal: ti N 3443 0 . F 1 ' & .dam, OW •,�.� °!1l dl i GARY D. STARRETT - PE #33443 Project No. 12010.00 m I I 010I1 IM/M Architects, Inc. FDA, L$ $TIME$ $FILEA$