Foreword

TCVN 4614:2012 replaces TCVN 4614:1988.

TCVN 4614:2012 was converted from TCVN 4614:1988 in accordance with the provisions of 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 some articles of the Law on Standards and Technical Regulations.

TCVN 4614:2012 was drafted by the Institute of Architecture, Urban and Rural Planning – Ministry of Construction, 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 conventional symbols representing building components in construction drawing design documents.

1.2. The building components represented by conventional symbols in this standard include:

a) Symbols for openings;

b) Symbols for windows;

c) Symbols for doors;

d) Symbols for ramps and staircases;

e) Symbols for partitions;

f) Symbols for components requiring repair.

NOTE: In case of using symbols not included in this standard, notes must be provided on the drawings.

2. Symbols for Openings (see Table 1).

Table 1 – Symbols for Openings

Symbol Name	Symbol	Note
1 Opening not reaching the floor level		Conventional symbol represented on floor plan.
2 Circular opening not reaching the floor level		Conventional symbol represented on floor plan.
3 Opening reaching the floor level		Conventional symbol represented on floor plan.

3. Symbols for Windows (see Table 2).

Table 2 – Symbols for Windows

Symbol Name	Symbol	Note
1 Single window represented on floor plan		Drawing scale 1:100
2 Double window represented on floor plan
3 Single window represented on floor plan		Drawing scale smaller than 1:100.
4 Double window represented on floor plan
5 Fixed single window represented on section and elevation
6 Single window with two sashes pivoting on vertical hinges opening outwards		The triangular symbol indicates the hinge side.
7 Single window with two sashes pivoting on two vertical hinges opening inwards
8 Single window with one sash pivoting on a central vertical axis, represented on floor plan and elevation		When representing the symbol, pay attention to the rotation direction of the sash.
9 Single window with one sash pivoting on a top horizontal hinge opening outwards		The solid line of the triangular opening symbol indicates outward opening, while the dashed line indicates inward opening.
10 Single window with one sash pivoting on a top horizontal hinge, opening inwards		The opening direction of the sash on the section is conventionally drawn at a 30° angle.
11 Single window with one sash pivoting on a bottom horizontal hinge, opening inwards
12 Tilt window with one sash pivoting on a central horizontal axis
13 Window with upward sliding sash, represented on elevation and section
14 Window with horizontally sliding sash, represented on floor plan and elevation
15 Double window with four sashes pivoting on two vertical hinges, opening in both directions
16 Double window with two sashes pivoting on top horizontal hinges, opening in both directions
17 Double window with two sashes pivoting on vertical hinges, opening in both directions
NOTES: 1. The triangular sash opening symbol is only represented on construction documents and details. 2. Symbols No. 1 and No. 2 are represented for drawings at a scale of 1:100. 3. Symbols from No. 3 to No. 17 are represented for drawings at a scale smaller than 1:100. 4. For drawings at a scale of 1:50 and larger, the symbol must accurately represent the scale and structure of the window frame, sash, materials, etc.

4. Symbols for Doors

The symbols in this Article only indicate the type of door (single, double, etc.) and the opening method of the door leaf, regardless of the material and structure of the door leaf as well as the joinery and installation techniques into the wall (see Table 3).

Table 3 – Symbols for Doors

Symbol Name	Symbol	Note
1 Single door with one leaf represented on floor plan		The rotation direction of the door leaf on the floor plan is represented at a 90° or 45° angle.
2 Single door with two leaves
3 Folding door
4 Single door with one leaf opening in both directions, automatic type		The rotation direction of the door leaf is drawn at a 30° angle.
5 Single door with two leaves opening in both directions, automatic type
6 Door pivoting on a central vertical axis
7 Single sliding door with one leaf
8 Single sliding door with two leaves
9 Lifting door or rolling door
10 Double door with two leaves
11 Double door with four leaves
12 Pocket door that slides into the wall
NOTES: 1. Symbols from No. 1 to No. 12 are represented for drawings at a scale smaller than 1:100. 2. For drawings at a scale of 1:100, the level of detail represented by the symbol is similar to symbols No. 1 and No. 2 in Section 3 of this standard. 3. For drawings at a scale of 1:50 and larger, the symbol must accurately represent the scale and structure of the door frame, door leaf, materials, etc.

5. Symbols for Staircases and Ramps

The symbols in this Article are conventionally used to represent all types of staircases and sloped ramps (regardless of material) in drawings at a scale of 1:200 and smaller (see Table 4).

For drawings at a scale of 1:100 and larger, the staircase symbol must represent the details of materials and structure according to the accurate scale and calculation of the structure.

Table 4 – Symbols for Staircases and Ramps

Symbol Name	Symbol	Note
1 Vehicle ramp, represented on floor plan		The slope must be indicated above the arrow, indicating the slope direction.
2 Staircase section		Represented on drawings at a scale of 1:200 and smaller.
3 Staircase section		Represented on drawings at a scale larger than 1:200.
4 Floor plan of the lowest floor staircase		The starting point of the arrow symbol is represented by a small dot placed at the starting point of the first stair step; the stair step break mark is conventionally cut at a height of 1 m from the floor level.
5 Floor plan of the intermediate floor staircase		The arrow symbol line must be drawn continuously.
6 Floor plan of the top floor staircase		The arrow symbol line must be drawn continuously; the sharp end of the arrow must be drawn up to the boundary of the staircase floor plan.
7 Elevator, represented on floor plan

6. Symbols for Partitions

The symbols in this Article are conventionally used to represent various types of partitions on floor plans in drawings at a scale of 1:200 and smaller. The symbol is represented by a solid bold line (accompanied by notes on materials). (See Table 5).

For drawings at a scale of 1:50 and larger, the partition symbol must represent the details of materials and structure according to the accurate scale and calculation of the structure.

Table 5 – Symbols for Partitions

Symbol Name	Symbol	Note
1 Partition, general symbol on floor plan
2 Metal mesh partition
3 Partition made of precast panels
4 Partition made of glass or transparent material, perforated material
5 Partition made of common materials: bamboo, wood, bagasse, fiber boards, etc.		The partition base can be made of wood, bamboo, palm leaves, bamboo mats. The partition panels can be made of plywood, wood boards, bamboo mats, leather, bagasse, etc. (Partition materials can be noted on the leader line).

7. Symbols for Components Requiring Repair

Table 6 – Symbols for Components Requiring Repair

Symbol Name	Symbol	Note
1 Existing wall requiring repair
2 Newly designed wall during repair or new construction
3 Wall to be demolished during repair
4 Existing opening on wall requiring expansion		Represented on elevation and section.
5 Existing opening on wall requiring reduction		Represented on elevation and section.
6 Newly designed opening on existing wall or floor		Can be noted on the leader line.
7 Opening on existing floor or wall requiring closure		Can be noted on the leader line.