GB 51210-2016 English PDF (GB51210-2016)

Delivery: 3 seconds. Download true-PDF + Invoice.
Get QUOTATION in 1-minute: Click GB 51210-2016
Historical versions: GB 51210-2016
Preview True-PDF (Reload/Scroll if blank)

GB 51210-2016: Unified standard for safety of scaffold in construction
GB 51210-2016
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
UDC
P GB 51210-2016
Unified standard for safety of scaffold in construction
ISSUED ON: DECEMBER 02, 2016
IMPLEMENTED ON: JULY 01, 2017
Issued by: Ministry of Housing and Urban-Rural Development of the People's
Republic of China
General Administration of Quality Supervision, Inspection and
Quarantine of PRC.
Table of Contents
Foreword ... 5
1 General provisions ... 8
2 Terms and symbols ... 8
2.1 Terms ... 8
2.2 Symbols ... 10
3 Basic requirements ... 14
3.1 General requirements ... 14
3.2 Safety levels and safety factors ... 14
4 Materials and accessories ... 16
5 Load ... 20
5.1 Load classification and normal value ... 20
5.2 Load combination ... 22
6 Design ... 24
6.1 General requirements ... 24
6.2 Ultimate limit state ... 29
6.3 Serviceability limit state ... 40
7 Structural testing and analysis ... 41
7.1 General requirements ... 41
7.2 Frame test and analysis ... 44
7.3 Testing and analysis of accessories ... 46
8 Detailing requirements ... 47
8.1 General requirements ... 47
8.2 Operation scaffold ... 48
8.3 Shoring scaffold ... 50
9 Installation and dismantlement ... 54
10 Quality control ... 56
11 Safety management ... 58
11.1 General requirements ... 58
11.2 Safety requirements ... 59
Appendix A Mechanics testing methods of scaffold ... 61
A.1 Mechanics testing methods of accessories ... 61
A.2 Mechanics testing methods of scaffold structure ... 69
Explanation of wording in this standard ... 76
List of quoted standards ... 77
Unified standard for safety of scaffold in construction
1 General provisions
1.0.1 This standard is formulated in order to unify the design, construction, use,
management of construction scaffolding and ensure that it is technologically advanced,
safe, applicable, economical, reasonable.
1.0.2 This standard applies to the design, construction, use, management of scaffolding
for housing construction projects and municipal engineering construction.
1.0.3 In addition to complying with this standard, the design, construction, use,
management of construction scaffolding shall also comply with the relevant national
standards.
2 Terms and symbols
2.1 Terms
2.1.1 Scaffold
It is a structural frame composed of rods or structural units and accessories that are
reliably connected, can withstand corresponding loads, has safety protection functions,
provides operating conditions for building construction. It includes operation scaffold
and shoring scaffold.
2.1.2 Operation scaffold
Scaffolding which is composed of rods or structural units and accessories through
reliable connections, supported on the ground, buildings or attached to engineering
structures, to provide a working platform and safety protection for construction. It
includes floor-standing operation scaffold, cantilever scaffold, attached lifting scaffold,
etc. as formed by various types of rods (components), which are referred to as operation
scaffold.
2.1.3 Shoring scaffold
Scaffolding which is composed of rods or structural units and accessories that are
reliably connected and supported on the ground or structure, can withstand various
loads, has safety protection functions, provides support and working platforms for
building construction, including structural installation shoring scaffold, formwork
shoring scaffold for concrete construction, etc. as formed by various types of rods
(components), which are referred to as shoring scaffold.
2.1.4 Closed operation scaffold
An operation scaffold which uses materials such as dense mesh safety nets or steel wire
mesh to cover the entire outer facade.
2.1.5 Open operation scaffold
An operation scaffold which has an unobstructed non-enclosed outer facade.
2.1.6 Compositive safety factor
The overall safety factor of a scaffolding structure or main components, which is the
ratio -- of the ultimate bearing capacity of the scaffolding structure or components to
its design bearing capacity.
2.1.7 Normal value of geometrical parameter
The nominal value of the geometric parameters determined by the design, or the average
value of the geometric parameters determined by statistical probability distribution
based on the actual measurement results.
2.1.8 Scaffold detailing
The structural form, connection method, mutual relationship of the scaffold, which is
composed of frame members, structural units, accessories.
2.1.9 Scaffold structure test
A test to evaluate the mechanical properties of the scaffolding structure or main
components, through the test method of applied load.
2.1.10 Scaffold model test
A scaffold structural performance test, which is conducted using a prototype sample
with the same size and structure as the typical structural unit of the actual scaffold.
2.1.11 Scaffold unit structure test
Scaffold structure test, which is carried out using the same materials and components
as the scaffolding used in the project and setting up the test frame according to specific
structural requirements.
grade steel in the current national standard "Carbon structural steels" GB/T 700. The
thickness of the steel plate of the stamped steel scaffold planking shall not be less than
1.5 mm; the diameter of the inscribed circle of the planking punching hole shall be less
than 25 mm.
4.0.7 The base plate and base jack shall be processed and manufactured after design
and calculation; their materials shall comply with the steel grade Q235 requirements of
current national standards "Carbon structural steels" GB/T 700, or the steel grade Q345
requirements of "High strength low alloy structural steels" GB/T 1591. Meanwhile it
shall also comply with the following requirements:
1 The thickness of the steel base plate shall not be less than 6 mm; the thickness of
the U-shaped steel base jack shall not be less than 5 mm. The steel plate and the
screw shall be circumferentially welded. The height of the weld shall not be less
than the thickness of the steel plate; stiffening plates should be provided;
2 The fitting tolerance -- of the adjustable base plate and adjustable base jack inserted
into the steel pipe of the scaffolding standard -- shall be less than 2.5 mm;
3 The bearing capacity of the adjustable base plate and adjustable base jack, when
the screw rod meshes with the adjustable nut, shall be higher than that of the
adjustable base plate and adjustable base jack. The number of teeth meshing
between the screw rod and the adjusting nut shall be determined through
calculation. The thickness of the nut shall not be less than 30 mm.
4.0.8 The standard values of the geometric parameters of materials and accessories shall
adopt the nominal values specified in the design; the measured average value of the
geometric parameters of factory-produced accessories shall comply with the design
nominal values.
4.0.9 The materials of steel lifting rings or embedded anchor bolts shall comply with
the provisions of the current national standard "Code for design of concrete structures"
GB 50010.
4.0.10 The wire ropes used in scaffolding shall comply with the requirements of current
national standards "Steel wire ropes for general purpose" GB/T 20118, "Quality steel
wire ropes" GB/T 8918, "General purpose thimbles for use with steel wire ropes" GB/T
5974.1, "Wire rope grips" GB/T 5976.
4.0.11 The structural connection materials of ...