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DETAILS MEP// HV MEP HVAC AC DETAILS At times, the architect and engineer need a drawing that gives a three-dimensional appearance. These drawings are labeled “Detail” on the plans under the title of the detail. Details are not usually drawn to scale. For clarity, the drafter notes “Not to Scale” or gives the scale used. Some examples of such drawings are shown in Details Figures 22 through 26. Each of these details gives a realistic view of the object along with specific necessary information. • • •
Details, are included on plans to relay information information from the architect architect to persons who will be studying the construction drawings. Details, Detai ls, may be be on a separate separate page or or on unused spaces spaces on on the constructi construction on drawings drawings.. A detail detail shows shows how materia materials ls and compon components ents are are joined, joined, and it is is not usually usually drawn drawn to scale. Det Detail ailss are are often drawn using the isometric or oblique drafting method.
MECHANICAL DETAILS Some details that are commonly used in the mechanical engineer’s office are as follows: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10.. 10 11. 12. 13. 14. 15.
Mechanical unit detai Mechanical details ls Fan Fa n det detai ails ls Equipment Equi pment moun mounting ting base basess Unitt hangers Uni hangers deta details ils Roof-mou Roof -mounted nted equi equipmen pmentt Supply Supp ly and retur return n air termin terminals als Detaill of speci Detai special al valve valvess Ductt conn Duc connect ection ionss Piping Pip ing det detail ailss Pump Pu mp deta detail ilss Damper Dam per det detail ailss Insula Ins ulatio tion n details details Coil moun mounting ting detai details ls Louver Lou ver det detail ailss Equipment Equi pment conne connection ction detai details ls
Mechanical details should include such information as the type of materials used, how different members are joined together, necessary dimensions for different members, connection points, and hangers or mounting devices.
N UR T RE GATE VALVE W O L F
UNION
W FLO
LY PP SU
GLOBE VALVE UNIT H EATER EATER
UNION
DETAILS Figure 22. Oblique detail of a hot water unit heater.
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SUPPLY SUPPLY D UCT
DUCT TRANSITIONS REFRIGERANT LIQUID LINE
ELBOW FLEXIBLE DUCT CONNECTION COOLING COIL
REFRIGERANT SUCTION LINE GAS VENT UP THROUGH ROOF
CONDENSATE DRAIN LINE GAS LINE
G
FILTER FILTER SECTION
MANUAL SHUT-OFF VALVE DIRT TRAP UNION 100% SHUT-OFF GAS CONTROL VALVE
RETURN AIR DUCT NOTE: NOT TO SCALE
4" HIGH CONCRETE HOUSEKEEPING PAD ON CONCRET E FLOOR
DETAILS Figure 23. Detail of connections to a gas furnace in an A/C unit.
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AIR VENT
3-WAY CONTROL VALVE
GATE VALVE
W FLO
HOT WATER HEATING COIL UNION
W FLO
BALANCING VALVE VALVE GLOBAL VALVE VALVE
DETAILS Figure 24. Detail of hot water heating coil with three-way control valve.
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REFRIGERANT PIPING
FAN WITH FAN GUARD
CONDENSING UNIT
PLAN VIEW
CONCRETE PAD
EXTENSION LINES (TYPICAL)
REFRIGERANT PIPING
AIR DISCHARGE
ELEVATION VIEW
AIR INTAKE
CONDENSING UNIT
FINISHED GRADE
CONCRETE PAD
DETAILS Figure 25. Plan view and elevation view of condensing unit.
A I R D I S C H A R G E
E R O R E A K O O I R R T E T B E X C U I C I R
I N E R E W L P O E X I B I T F L N D U C O
T A N R G E E I G F R D L I N T E R U I N Q R A N E L I Q E G L I I G N F R I O E R C T O U S
G S I N N E N D C O I T U N
E S I D T O U O I L C
A I R I N T A K E
A D E P T E C R E N C O A D 6 " G R O N
DETAILS Figure 26. Detail of outside condensing unit.
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DETAILS Figure 27. Exhaust fan detail.
VIEW PHOTO
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SECTION 2 / Speci SECTION Specifics fics DETAILS—MEP/ HVAC
