This specification is applicable to the construction quality control and acceptance of masonry such as brick, stone, small hollow concrete blocks, autoclaved aerated concrete blocks, etc. in building projects. GB 50203-2002 Masonry Construction Quality Acceptance Specification GB50203-2002 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
50203—2002
Code for acceptance of construction quality of masonry engineering
2002—03—15 Issued
2002—04—01
Ministry of Construction of the People's Republic of China
General Administration of Quality Supervision, Inspection and Quarantine
Jointly issued
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National Standard of the People's Republic of China
Code for acceptance of construction quality of masonry engineering
GB50203-2002
Editor: Shaanxi Provincial Development and Planning Commission Approval department: Ministry of Construction of the People's Republic of China Effective date: April 1, 2002
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Notice on the issuance of the national standard
《Code for Acceptance of Construction Quality of Masonry Engineering》Construction Standard No. 2002159
According to the Ministry of Construction's "Notice on Issuing the National Standard for Construction Quality of Masonry Engineering from 2000 to 2001" In accordance with the requirements of the Notice on the Formulation and Revision of Standards for Construction Quality Acceptance of Masonry Engineering (Construction Standard [2001] No. 87), the Shaanxi Provincial Development and Planning Commission, together with relevant departments, revised the "Standards for Acceptance of Construction Quality of Masonry Engineering". Our department organized relevant departments to review the standard and now approved it as a national standard, numbered GB50203-2002, which will be implemented on April 1, 2002. Among them, 4.0.1, 4.0.8, 5.2.1, 5.2.3, 6.1.2, 6.1.7, 6.1.9, 6.2. 1. 6.2.3, 7.1.9, 7.2.1, 8.2.1, 8.2.2, 10.0.4 are mandatory provisions and must be strictly enforced. The original "Code for Construction and Acceptance of Masonry Engineering" GB50203-98 is abolished at the same time.
This code is managed by the Ministry of Construction and is responsible for the interpretation of mandatory provisions. The Shaanxi Provincial Building Science Research and Design Institute is responsible for the interpretation of specific technical content. The Standard and Quota Research Institute of the Ministry of Construction organizes China Construction Industry Press to publish and distribute it.
People's Republic of China Ministry of Construction of the People's Republic of China
March 15, 2002
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National Standard for Construction Engineering "Code for Acceptance of Construction Quality of Masonry Engineering" GB50203-2002 is compiled by Shaanxi Provincial Development and Planning Commission and Shaanxi Provincial Architectural Science Research and Design Institute together with relevant units in accordance with the requirements of the Ministry of Construction's Document [2001187] "Notice on Issuing the "2000-2001 National Standard Formulation and Revision Plan for Engineering Construction". During the compilation process of this code, the compilation team conducted extensive and in-depth investigations and studies, summarized the practical experience of construction quality acceptance of construction projects in my country, adhered to the guiding ideology of "separation of inspection and evaluation, strengthening acceptance, improving means, and process control", and took the "Uniform Standard for Acceptance of Construction Quality of Construction Engineering" GB50300-2001 as the criterion, and widely solicited the opinions of relevant units. The Ministry reviewed and finalized it in September 2001. The compilation of this specification is to merge the relevant masonry engineering construction and acceptance specifications and engineering quality inspection and evaluation standards, absorb and supplement relevant content, delete relevant construction technology and evaluation content, and form a new masonry engineering construction quality acceptance specification to unify the acceptance method, quality standard and procedure of masonry engineering construction quality. This specification is divided into 11 chapters. Brick masonry engineering, small concrete hollow block engineering, stone masonry engineering, reinforced masonry engineering, infill wall masonry engineering and other sub-projects are separate chapters. In the first section of the 5th chapter "General Provisions", the main requirements are for the quality control of raw materials and construction processes. In the second section "Main Control Items" and the third section "General Items", the quality requirements, sampling quantity and inspection methods of the acceptance items are stipulated. The provisions marked in bold in this specification are mandatory provisions. In order to improve the quality of the specification, each unit should pay attention to accumulating information and summarizing experience in the process of implementing this specification. If you find that there is a need for modification and supplement, please send your opinions and relevant information to Shaanxi Provincial Architectural Science Research and Design Institute (No. 272, North Section of West Huancheng Road, Xi'an, Postal Code 710082) for reference in future revisions. Editor-in-chief: Shaanxi Architectural Science Research and Design Institute Participating units: Shaanxi Construction Engineering Corporation Sichuan Architectural Science Research Institute
Tianjin Construction Engineering Group Corporation
Liaoning Construction Science Research Institute
Shandong Weifang Construction Engineering Quality Supervision Station Main drafters: Zhang Changxu Zhang Hongxun Hou Ruxin Tong Guisen Zhang Shuyu Zhao Rui
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3 Basic provisions
Masonry mortar.
Brick masonry engineering
General provisions.
5.2 Main control items.
5.3 General items
6 Concrete small hollow block masonry engineering
6.1 General provisions
6.2 Main control items
6.3 General items
7 Stone masonry engineering
General provisions.
Main control items||t t||General items
Reinforced masonry engineering
General provisions
Main control items:
General items
9 Infill wall masonry engineering.
General provisions
Main control items
General items
Construction in winterwww.bzxz.net
11 Acceptance of sub-divisional projects
Appendix A
Appendix B
Quality acceptance record of inspection batches of masonry engineering
Explanation of terms used in this specification
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1 General provisions
1.0.1 This specification is formulated to strengthen the quality management of construction projects, unify the acceptance of masonry construction quality and ensure project quality.
1.0.2 This specification applies to the construction quality control and acceptance of masonry such as bricks, stones, small concrete hollow blocks, autoclaved aerated concrete blocks, etc. in construction projects. 1.0.3 This specification is used in conjunction with the national standard "Uniform Standard for Construction Quality Acceptance of Building Engineering" GB50300-2001.
1.0.4 The requirements for construction quality acceptance in the engineering technical documents and contract documents used in masonry construction shall not be lower than those specified in this specification.
1.0.5 In addition to implementing this specification, the acceptance of masonry construction quality shall also comply with the provisions of relevant national standards in force.
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2 Terms
2.o.1 Control grade of construction quality Control grade of construction quality The classification of construction technology level according to several elements of quality control and quality assurance. 2.0.2 Type inspection type inspection
An inspection to confirm the applicability of the application results of a product or process. 2.0.3 Continuous seam
In masonry, the vertical mortar joint with the overlap length of the upper and lower skin blocks less than the specified value. 2.0.4 Supposititious seam
A mortar joint that is only treated on the surface during masonry construction in order to cover up the inherent quality defects of the vertical mortar joint of masonry. 2.0.5 Reinforced masonry A general term for mesh reinforced masonry columns, horizontal reinforced masonry walls, masonry columns (walls) composed of brick masonry and reinforced concrete surface layer or reinforced mortar surface layer, brick masonry and reinforced concrete structural column combined wall, and reinforced block masonry shear wall.
2.0.6 Core column
A small reinforced concrete column inside the masonry formed by inserting vertical steel bars into the internal cavity of the block and pouring concrete.
2.0.7 Inspection at original space A test that uses standard inspection methods to select samples from the on-site masonry for non-destructive or micro-destructive testing to determine the strength of the masonry mortar and masonry entity. Page 7
3 Basic regulations
The materials used in masonry projects should have product certificates and product performance test reports. Block materials, cement, steel bars, admixtures, etc. should also have on-site re-inspection reports of the main properties of the materials. It is strictly forbidden to use materials that have been explicitly eliminated by the state.
3.0.2 Before laying the foundation, the layout dimensions should be checked and the allowable deviation should comply with the provisions of Table 3.0.2. Table 3.0.2
Length L, width B (m)
L (or B) ≤ 30
30
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