Foreword

TCVN 6077:2012 replaces TCVN 6077:1995 and TCVN 4615:1988.

TCVN 6077:2012 was converted from TCVN 6077:1995 and TCVN 4615:1988 in accordance with clause 1, Article 69 of the Law on Standards and Technical Regulations and point b), clause 1, Article 6 of Decree No. 127/2007/ND-CP detailing the implementation of certain articles of the Law on Standards and Technical Regulations.

TCVN 6077:2012 was compiled by the Institute of Architecture, Urban and Rural Planning, proposed by the Ministry of Construction, appraised by the Directorate for Standards, Metrology and Quality, and promulgated by the Ministry of Science and Technology.

1. Scope of application

1.1. This standard stipulates the representation of conventional symbols for technical equipment (including water supply, drainage, ventilation, and heating) used on floor plan drawings and diagrams in construction.

1.2. These conventional symbols are used on floor plan drawings and diagrams at a scale of 1:50. For drawings at smaller scales, simpler symbols may be used. For drawings at larger scales, more detailed symbols may be used. For diagrams, the symbols provided in the “Elevation” column are appropriate.

1.3. Where necessary, to make the drawings clearer, the conventional symbols can be combined with additional numeric, alphabetic or alphanumeric symbols and other brief references in the legend on the drawing or anywhere on the drawing.

1.4. If templates are used for drawing, the corners of the symbols can be rounded.

2. Conventional symbols

2.1. Conventional symbols for water supply and drainage equipment (see Table 1).

Table 1 – Conventional symbols for water supply and drainage equipment

Name	Floor plan	Elevation
1. Single sink, drain pipe on the left
2. Double sink, drain pipe on the left
3. Sink
4. Laundry sink
5. Washbasin
6. Industrial sink
7. Bathtub
8. Shower tray
9. Bidet
10. Floor-mounted water closet
11. Urinal bowl
12. Urinal trough1
13. Khay tắm đứng có vòi tắm hương sen
14. Floor drain
15. Họng nước chữa cháy
16. Faucet (general symbol)
17. Showerhead
18. Faucet with connecting device
19. Valve (general symbol)
20. Shut-off valve
21. Shut-off valve (general symbol)
22. Water meter
NOTE: The position of the drain hole is determined according to the requirements of each specific case.

2.2. Conventional symbols for ventilation and heating equipment (see Table 2)

Table 2 – Conventional symbols for ventilation and heating equipment

Name	Floor plan	Elevation
1. Corrugated pipe
2. Inner heating pipe
3. Smooth pipe radiator
4. Finned pipe
5. Finned pipe radiator
6. Convector radiator with casing
7. Radiant heater
8. Heating panel
9. Air heater
10. Condensate tank
11. Water separator and drain
12. Reheater
13. Oil separator
14. Centrifugal fan
15. Axial fan
16. Air heating unit
17. Air cooling unit
18. Spray chamber
19. Air filter
20. Silencer
21. Centrifugal dust separator
22. Ventilation control device
22.1. Butterfly valve
22.2. Damper
23. Air intake shaft (duct)
24. Wall air intake
25. Exhaust air shaft (duct)
26. Air supply outlet
27. Air exhaust inlet
28. Supply air diffuser
28.1. Rectangular
28.2. Conical
29. Exhaust air grille
30. Measuring point
31. Stove
32. Refrigerator
33. Air conditioner