Search Glossary

TCVN 5686:2012 System of building design documents - Components in buildings.General symbols

A factor or hazard causing illness, deterioration of human health during the working process according to the provisions of the law on occupational safety and health and health. Harmful elements to health include 06 main groups: Adverse microclimate; physical (e.g. noise, vibration); various dusts; toxic substances, chemicals, vapors; psychophysiology and ergonomics; occupational contact.

An element causing unsafety (directly or indirectly), injury or death to people during the working process.

A zone or area at the site and adjacent areas with harmful factors exceeding the permissible threshold or not satisfying the provisions stated in relevant national technical regulations but not to the extent of causing injury or death to people.

The boundaries of areas inside and around the construction site where dangerous elements may appear causing damage to people, construction works, assets, equipment, vehicles due to the construction process of the works, determined according to technical standards, regulations and measures for organizing construction of works [point h clause 1 Article 1 of Law No. 62/2020/QH14].

Types of materials, components, products used in construction of works that meet the following requirements:

a) Comply with the provisions of the law on product and goods quality and other relevant specialized laws;

b) Materials, components, products with quality in accordance with QCVN 16:2019/BXD, QCVN 04:2009/BKHCN and Amendment 1:2016 QCVN 04:2009/BKHCN, comply with the provisions of the design documentation, in accordance with the national technical regulations and standards related to materials, components, products permitted to be applied in Vietnam;

c) Comply with the provisions of the law on construction and other relevant specialized laws on quality control before being put into use at the site.

Building materials, components, products, tools, machines, equipment and other loads that must be lifted and lowered during the construction process.

A type of lifting equipment, using a guided platform to lift and lower people or lifted objects.

Standards related to materials, components, products, survey, design, construction, installation, acceptance, use, maintenance, techniques (or measures) to ensure safety and health for workers when carrying out construction activities specified in 1.1.2 and permitted to be applied in Vietnam.

Vehicles, machines, equipment (mobile or fixed) used to lift and lower people or lifted objects.

Hooks, chains, ropes, nets, buckets and other accessories used to attach or tie the lifted object to the lifting equipment but not a main part of the lifting equipment.

Principles based on the results of comprehensive research on the adaptation between technical means and the working environment with human capabilities in terms of physiology, psychology, in order to ensure the most effective labor, while protecting the health, safety and comfort of workers.

A location or area where a worker is present to work or needs to go to as required by the work assigned or requested by the employer.

TCVN 5686:2012
Type
TCVN
Status
Effective
Language
English
Document Info
Code: TCVN 5686:2012
Ministry of Construction
Issuance: 28/12/2012
Effective: 28/12/2012
Supercedes: TCVN 5686:1992
Table of Contents
TCVN 5686:2012

TCVN 5686:2012 System of building design documents – Components in buildings.General symbols

Foreword

TCVN 5686:2012 replaces TCVN 5686:1992.

TCVN 5686:2012 was converted from TCVN 5686:1992 according to the provisions of Clause 1, Article 69 of the Law on Standards and Technical Regulations and Point b), Clause 1, Article 6 of the Government’s Decree 127/2007/ND-CP dated August 1, 2007, detailing the implementation of several articles of the Law on Standards and Technical Regulations.

TCVN 5686:2012 was compiled 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. General Provisions

1.1. This standard stipulates the conventional alphanumeric symbols for building components and structures on design drawings (especially assembly diagrams of reinforced concrete components).

1.2. In addition to the provisions in this standard, other relevant regulations within the design documentation system must be complied with.

2. Composition of Symbols
2.1. Conventional symbols consist of 4 groups

Group 1: includes uppercase letters spelling out the name of the component.

FOR EXAMPLE:

Foundation: M

Truss: VK

Frame: K

Balcony: BC

Alongside uppercase letters, lowercase letters or numbers may be added to avoid duplication and clarify the component type.

FOR EXAMPLE: Ceiling beam: Dtr

Group 2: includes lowercase letters indicating the structural material, written in superscript form.

FOR EXAMPLE:

Reinforced concrete column: C btct

Masonry column: C gh

Concrete column: C bt

Steel column: C t

In case the component is the main load-bearing structure of the building made of the same primary material, this group does not need to be included in the symbol for those components.

Group 3: includes numbers indicating the floor level of the component, written in line with Group 1. For single-story building structures and foundation structures, this group is not required.

Group 4: includes a two-digit number indicating the sequence of the component, written after Group 3. Group 4 is separated from Group 3 by a dot.

FOR EXAMPLE: Column on 3rd floor No. 2: C3.02

2.2. Some common symbols

Commonly used symbols are specified in Table 1.

NOTE: Refer to Appendix A for symbol notation

Table 1 – Some common symbols

Structural NameConventional SymbolComponent NameConventional Symbol
– FoundationM– FrameK
– Machine FoundationMm– BeamD
– Foundation SlabBm– Ceiling Beamtr
– Foundation StrapSm– Roof BeamDm
– Foundation BeamDmg– TrussVK
– PileCc– WallT
– Pile CapĐc– StairsCT
– Tie BeamG– Stair ColumnCth
– ColumnC– StrutL
– Trussed Strut– VaultV
– TrussOv– GutterMN
– BalconyBC– Water TankBN
– CorniceCS– PanelP
– SlabB– Roof Panelm
– Floor Slabs– Floor Panels
APPENDIX A (Informative) NOTATION OF CONVENTIONAL SYMBOLS ON DRAWINGS

A.1. Notation of conventional symbols for components on a section (Figure A.1)

Figure A.1 – Symbols of components on a section

A.2. Notation of conventional symbols for components on a floor plan (Figure A.2)

Figure A.2 – Foundation plan