13-828-0091 I MECHANICAL ROOF PLAN
OUTSIDE AIR CALCULATIONS
PER FBC TABLE 403.5
OFFICE SPACE AREA = 1,265 50. FT.
DEFAULT OCCUPANT DENSITY:
5/1000 SO. FT. X 1,265 50. FT. = 6.5 PERSONS
Az = ZONE FLOOR AREA: 1,265 50. FT.
Pz = ZONE POPULATION: 6.3 PERSONS
Rp = PEOPLE OUTDOOR AIR RATE: 5 GFM/ PERSON (TABLE 405.5)
Ro = AREA OUTDOOR AIR RATE: 0.06 GFM/ 50. FT. X 1,265 50. FT.
Vbz = RpPZ + RoAz
Vbz = 5 GFM X 5.5 PERSONS + 0.06 GFM/ 50. FT. X 1,265 SOFT.
Vbz = 101.4 GFM
PROVIDE 101 GFM OUTSIDE AIR.
MECHANICAL NOTES
I. ALL EXISTING AIR DUCTS, GRILLS IN THE EXISTING OFFICE AREAS N.I.G. ARE
EXISTING TO REMAIN. NO WORK IS TO BE PROVIDED.
2. THE PROPOSED MEGHANIGAL WORK IS TO PROVIDE A NEW HVAG SYSTEM IN
AFFECTED AREAS OF AN EXISTING OFFICE BUILDING DUE TO COMPLETE
INTERIOR ROOM LAYOUT REDESIGN.
3. ACOUSTICAL CEILING TO BE INSTALLED @ 5' -0" ABOVE FINISHED FLOOR.
LEGEND
24X24 CD –(SEE SCHEDULE)
DUCT TO MATCH NECK SIZE TYP.
24X24 Return Air Transfer Grille
24X24 Return Air Grille
-E -' VOLUME DAMPER
Q) THERMOSTAT
DD DUCT MOUNTED SMOKE DETECTOR
SEE F.A. RISER FOR SPECS.
RETURN OR EXHAUST, SEE PLANS.
F EXHAUST FAN
O.A.I. OUTSIDE AIR INTAKE
S. R. SIDE REGISTER
CD CEILING DIFFUSER
CG UNLESS OTHERWISE NOTED.
H. P. HEAT PUMP UNIT
U.O.N. UNLESS OTHERWISE NOTED.
ERL :EXISTING AND RELOCATED
ERM :EXISTING TO REMAIN
R :REMOVED
M
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0
AREA OF CONSTRUTION
® ® TF-11S PERMIT
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PART OF TH15 PERMIT TO REMAIN.
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PROVIDE MOTORIZED SHUTOFF DAMPER ® 3/4 "0
FOR OUT5IDE AIR INTAKE HOOD (101 CFM)
RTU -1
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ROOF 0005ENECK FOR d
EXHA5T FAN DUCT
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1 I MECHANICAL ROOF PLAN
OUTSIDE AIR CALCULATIONS
PER FBC TABLE 403.5
OFFICE SPACE AREA = 1,265 50. FT.
DEFAULT OCCUPANT DENSITY:
5/1000 SO. FT. X 1,265 50. FT. = 6.5 PERSONS
Az = ZONE FLOOR AREA: 1,265 50. FT.
Pz = ZONE POPULATION: 6.3 PERSONS
Rp = PEOPLE OUTDOOR AIR RATE: 5 GFM/ PERSON (TABLE 405.5)
Ro = AREA OUTDOOR AIR RATE: 0.06 GFM/ 50. FT. X 1,265 50. FT.
Vbz = RpPZ + RoAz
Vbz = 5 GFM X 5.5 PERSONS + 0.06 GFM/ 50. FT. X 1,265 SOFT.
Vbz = 101.4 GFM
PROVIDE 101 GFM OUTSIDE AIR.
MECHANICAL NOTES
I. ALL EXISTING AIR DUCTS, GRILLS IN THE EXISTING OFFICE AREAS N.I.G. ARE
EXISTING TO REMAIN. NO WORK IS TO BE PROVIDED.
2. THE PROPOSED MEGHANIGAL WORK IS TO PROVIDE A NEW HVAG SYSTEM IN
AFFECTED AREAS OF AN EXISTING OFFICE BUILDING DUE TO COMPLETE
INTERIOR ROOM LAYOUT REDESIGN.
3. ACOUSTICAL CEILING TO BE INSTALLED @ 5' -0" ABOVE FINISHED FLOOR.
LEGEND
24X24 CD –(SEE SCHEDULE)
DUCT TO MATCH NECK SIZE TYP.
24X24 Return Air Transfer Grille
24X24 Return Air Grille
-E -' VOLUME DAMPER
Q) THERMOSTAT
DD DUCT MOUNTED SMOKE DETECTOR
SEE F.A. RISER FOR SPECS.
RETURN OR EXHAUST, SEE PLANS.
F EXHAUST FAN
O.A.I. OUTSIDE AIR INTAKE
S. R. SIDE REGISTER
CD CEILING DIFFUSER
CG UNLESS OTHERWISE NOTED.
H. P. HEAT PUMP UNIT
U.O.N. UNLESS OTHERWISE NOTED.
ERL :EXISTING AND RELOCATED
ERM :EXISTING TO REMAIN
R :REMOVED
- REPLACE EXISTING SUPPLY AND RETURN
PLENUM. ROOF CURB TO BE REUSED.
NEW ROOF TOP PACKAGE UNIT TH15
PERMIT TO REPLACE EXISTING. USE
EXISTING STRUCTURAL STEEL SUPPORT
FRAME.
OVERFLOW SWITCH SHALL BE INSTALLED
AT THE PRIMARY DRAIN PAN OF THE UNIT
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