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HOOD #1 CALCULATIONS <br />HOOD SIZE : ............................................. 12'-0" X 4'-0" <br />TOTAL CFM : ............................................. 3,600 CFM <br />DUCT SIZE:......(2.5 SQ.FT).................. 18"X20" <br />VELOCITY: .....................3600 / 2.5 = 1,440 FPM <br />VELOCITY PRESSURE (Pv) (1440 <br />4005)² = 0.129 "W.C. <br />FITTING LOSS = Σ CxPv = 2.65 X0.0.129= 0.34 " W.C. <br />DUCT SIZE:......(2.5 SQ.FT).................. 12"X30" <br />VELOCITY: .....................3600 / 2.5 = 1,440 FPM <br />VELOCITY PRESSURE (Pv) (1440 <br />4005)² = 0.129 "W.C. <br />FITTING LOSS = Σ CxPv = 1.7 X0.129= 0.22 " W.C. <br />DUCT LOSS ................= 40'X0.2/100= 0.08"W.C. <br />HOOD & FILTER LOSS (MANUFAC.)= 0.532"W.C. <br />TOTAL LOSSES...0.34+0.22+0.08+0.532 = 1.172 "W.C. <br />REQUIRED FAN CAPACITY <br />MINIMUM FAN CAPACITY SHALL BE <br />3600 CFM @ 1.172 (" W.C.) E.S.P. <br />PROVIDED <br />3600 CFM @ 1.5(" W.C.) E.S.P. <br />AIR BALANCE SCHEDULE <br />1- O.S.A. FROM A/C BY SHELL <br />·(EX.) FC-H1 380 (CFM) <br />·(EX.) FC-H2 220 (CFM) <br />·(EX.) FC-H3 220 (CFM) <br />·(EX.) FC-H4 220 (CFM) <br />·(EX.) FC-H5 220 (CFM) <br /> TOTAL O.S.A 1,260 (CFM) <br />·2- SUPPLY (MAKE-UP AIR) <br />·MUA-1 3,100 (CFM) <br />·MUA-2 3,600 (CFM) <br />3- TOTAL SUPPLY TO SPACE 7,960 (CFM) <br />4- EXHAUST AIR <br />·KITCHEN HOOD #1 3600 (CFM) <br />·KITCHEN HOOD #2 4000 (CFM) <br />·TOILETS EXH. 200 (CFM) <br /> TOTAL EXH. 7800 (CFM) <br />TENANT SPACE AIR BALANCE: <br />7,960 CFM(+VE) - 7800 CFM(-VE)= 160 (CFM) (+VE) FOR <br />NET EXFILTRATION <br />AIR BALANCE REPORT <br />AN AIR BALANCE REPORT BY A QUALIFIED "NEBB" OR <br />"AABC" CONTRACTOR SHALL BE PROVIDED TO THE <br />BUILDING DIVISION FOR HVAC SYSTEMS PERFORMANCE <br />TOGETHER. WITH COMPLETED TITLE-24 TESTING AND <br />DOCUMENTATION FORMS (MECH-2-A), (MECH-3-A) AND <br />(MECH-4-A) ATTACHED FOR REVIEW AND ACCEPTANCE <br />PRIOR TO FINAL INSPECTION OR OCCUPANCY <br />(C.G.B. C.S. 5. 410.4.3.1, CMC 407.3 & 511.3). <br />HOOD #2 CALCULATIONS <br />HOOD SIZE : ............................................. 8'-0" X 4'-0" <br />TOTAL CFM : ............................................. 4,000 CFM <br />DUCT SIZE:......(2.5 SQ.FT).................. 12"X30" <br />VELOCITY: ....................4,000 / 2.5 = 1,600 FPM <br />VELOCITY PRESSURE (Pv) (1600 <br />4005)² = 0.16 "W.C. <br />FITTING LOSS = Σ CxPv = 3.0 X0.16= 0.48 "W.C. <br />DUCT SIZE:......(1.5 SQ.FT).................. 12"X18" <br />VELOCITY: .....................2000 / 1.5 = 1,334 FPM <br />VELOCITY PRESSURE (Pv) (1334 <br />4005)² = 0.11 "W.C. <br />FITTING LOSS = Σ CxPv = 6.5 X0.11= 0.715 "W.C. <br />DUCT LOSS ................= 120'X0.2/100= 0.24 "W.C. <br />HOOD & FILTER LOSS (MANUFAC.)= 0.422"W.C. <br />TOTAL LOSSES...0.48+0.715+0.24+0.422 = 1.857 "W.C. <br />REQUIRED FAN CAPACITY <br />MINIMUM FAN CAPACITY SHALL BE <br />4000 CFM @ 1.857 (" W.C.) E.S.P. <br />PROVIDED <br />4000 CFM @ 3.0 (" W.C.) E.S.P. <br />14 <br />" <br />Ø <br />14 <br />" <br />Ø <br />18 <br />" <br />Ø <br />18 <br />" <br />Ø <br />18"Ø <br />14"X28" <br />14" <br />Ø <br />16 <br />" <br />Ø <br />20 <br />" <br />Ø <br />14"Ø <br />16 <br />" <br />Ø <br />14"X28" <br />MAKE UP AIR DUCT PLANHOOD EXHAUST DUCT PLAN <br />EX. 14"X28" <br />EX. 14"X28" <br />SCHEMATIC AIR BALANCE DIAGRAM (NO SCALE) <br />10'-0" MIN <br />a 14"Ø DUCT DN. AND CONNECT TO 8"X36" SUPPLY COLLAR <br />BELLOW EXHAUST DUCT . <br />b <br />a <br />b <br />12" X 30" 22" BELLOW CEILING <br />(RUN DUCT BELLOW MAKE UP AIR DUCTS) <br />c <br />c <br />20" WIDE X18" DEEP GREASE EXHAUST DUCT <br />(RUN DUCT ABOVE MAKE UP AIR DUCT CONNECTION TO COLLAR) <br />16"Ø <br />18 <br />" <br />Ø <br />d <br />d RUN MAKE UP AIR DUCT OVER HOOD #2 EXHAUST DUCT <br />M-1.1 <br />THIS DRAWING, SPECIFICATIONS AND <br />IDEAS, DESIGNS THEREBY ARE AND SHALL <br />REMAIN THE PROPERTY OF IMAGINE <br />ARCHITECTURE AND NO PART THEREOF <br />SHALL BE COPIED DISCLOSED TO OTHERS <br />OR USED IN CONNECTION WITH ANY <br />WORK OR PROJECT FOR WHICH THERE <br />HAVE BEEN PREPARED AND DEVELOPED, <br />WITHOUT THE WRITTEN CONSENT OF <br />IMAGINE ARHITECUTRE, VISUAL CONTACT <br />WITH THESE DRAWINGS SHALL <br />CONSTITUTE EVIDENCE OF ACCEPTANCE <br />OF THESE RESTRICTIONS. <br />TA <br />C <br />O <br />S <br /> <br />L <br />O <br />S <br /> <br />C <br />H <br />O <br />L <br />O <br />S <br />113 E Fourth St <br />4/16/2025