JC/T 1026-2007Glass fiber reinforced thermosetting resin grating for supporting loads (English PDF)
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Issued by
National Development and Reform Commission of PRC
Level / Type
National · Recommended
Issue date
April 13, 2007
Implementation date
October 1, 2007
Scope
JC/T 1026-2007 (Glass fiber reinforced thermosetting resin grating for supporting loads) is available as an English-translated PDF.
JC/T 1026-2007 - This standard specifies the structure, size, product model and marking, technical conditions, load-bearing requirements, inspection rules and packaging, marking, storage and transportation of glass fiber reinforced thermosetting resin grating (hereinafter referred to as grating).
This standard applies to industrial platforms, floors, walkway paving, stair treads, trench covers, fences and other load-bearing gratings in petrochemical, metallurgy, light industry, shipbuilding, energy, municipal and other industries. Non-load-bearing gratings can be implemented with reference to this standard.
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Document preview — JC/T 1026-2007
National Standard of the People's Republic of China
- ICS
- 91.060.20
- Classification
- Q 23
Issued by: National Development and Reform Commission of PRC
Contents
- Foreword...3
- 1 Scope...4
- 2 Normative references...4
- 3 Terms and definitions...5
- 4 Product specifications, size and marking...5
- 5 Technical requirements...9
- 6 Test method...11
- 7 Inspection rules...12
- 8 Marking, packaging, storage, transportation...14
Foreword
Appendix A of this standard is a normative appendix.
This standard was proposed by China Building Materials Industry Association.
This standard shall under the jurisdiction of the National Fiber Reinforced
Plastics Standardization Technical Committee.
The main drafting organizations of this standard. Haohua Zhongyi FRP Co.,
Ltd., Nantong Meigu Composite Material Co., Ltd., Nantong Mingkang
Composite Material Co., Ltd., Nantong Qiangli Plastic Co., Ltd., Beijing FRP
Institute Composite Material Co., Ltd.
1 Scope
This standard specifies the structure, size, product model and marking,
technical conditions, load-bearing requirements, inspection rules and
packaging, marking, storage and transportation of glass fiber reinforced
thermosetting resin grating (hereinafter referred to as grating).
This standard applies to industrial platforms, floors, walkway paving, stair
treads, trench covers, fences and other load-bearing gratings in petrochemical,
metallurgy, light industry, shipbuilding, energy, municipal and other industries.
Non-load-bearing gratings can be implemented with reference to this standard.
2 Normative references
The provisions in following documents become the provisions of this Standard
through reference in this Standard. For the dated references, the subsequent
amendments (excluding corrections) or revisions do not apply to this Standard;
however, parties who reach an agreement based on this Standard are
encouraged to study if the latest versions of these documents are applicable.
For undated references, the latest edition of the referenced document applies.
GB/T 1446-2005 Fiber-reinforced plastics composites - The generals of test
methods
GB/T 1449-2005 Fiber-reinforced plastic composites - Determination of
flexural properties
GB/T 1462-2005 Test methods for water absorption of fiber reinforced
plastics
GB/T 3854-2005 Test method for hardness of reinforced plastics by means
of Barcol impresser
3 Terms and definitions
The following terms and definitions apply to this standard.
3.1
Molded grating
A board with a certain open rate made by a special process on a customized
mold with thermosetting resin as the matrix and glass fiber roving as the
skeleton. The product is composed of several shapes of gratings; has the
characteristics of bidirectional bearing in the longitudinal and lateral
directions;
3.2
Pultruded grating
A board with voids made by a certain assembling process with the pultruded
I and T profiles as load-bearing ribs, pipes or bars as connecting rods. The
product has high strength in the direction of the load-bearing ribs; it is often
used under conditions of large spans. The pultruded grating is as shown in
Figure 2.
4 Product specifications, size and marking
4.1 Grating size
4.1.1 The grid sizes of commonly used molded gratings are as shown in Figure
3 and Table 1.The gratings of other sizes can be designed according to user
requirements.
4.1.2 The commonly used pultruded grating structure is as shown in Figure 4
and Figure 5.The specifications are as shown in Table 2.The gratings of other
specifications can be designed according to user requirements.
5 Technical requirements
5.1 Raw materials
5.1.1 Resin
5.1.1.1 The unsaturated polyester resin used in the grating shall meet the
requirements of GB/T 8237-2005; the epoxy resin used shall meet the
requirements of GB/T 13657-1992.Other resins shall meet the requirements of
corresponding standards.
5.2 Appearance
The grating shall be smooth, flat, uniform in color, free of delamination, burrs,
cracks, fiber exposure or impurities. It is not allowed for pores larger than Phi3
mm. The number of pores larger than 1 mm and less than 3 mm on any 300
mm x 300 mm area of the grating plate shall not exceed 10.
5.3 Grating size deviation
5.3.1 The length and width deviation of the grating is. -3 mm ~ +3 mm for
molded grating and -6 mm ~ +6 mm for pultruded grating.
5.5 Barcol hardness
Barcol hardness is not less than 40.
5.6 Load-bearing capacity
5.6.1 See Table 3 for design loads.
5.6.2 For load-bearing structures such as access platforms, stairwell platforms,
overhaul platforms, under the design loads listed in Table 3, the deflection at
the midpoint of the grating shall not be greater than 1/120 of the span, the
maximum shall not exceed 9 mm. Meanwhile it shall meet the following
requirements.
6 Test method
6.1 Appearance
6.1.1 Use visual inspection for appearance.
6.1.2 The size of the pores on the outer surface shall be inspected with a vernier
caliper which has an accuracy of 0.02 mm.
6.2 Determination of grating size
6.2.1 Divide equally into four parts along the width of the grating. Use a steel
tape which has an accuracy of 1 mm to measure the length of the grating. Take
the arithmetic average of the three measurement results.
6.3 Water absorption
The water absorption test is carried out according to GB/T 1462-2005.
6.4 Barcol hardness
Barcol hardness test is carried out according to GB/T 3854-2005.
6.5 Load-bearing capacity
The load-bearing capacity test is carried out in accordance with Appendix A.
7 Inspection rules
7.1 Inspection category
Product inspection is divided into exit-factory inspection and type inspection.
7.2 Exit-factory inspection
7.2.1 Inspection items
The exit-factory grating shall be inspected for appearance, dimensional
deviation and Barcol hardness.
7.2.3 Judgement rules
7.3 Type inspection
7.3.1 Inspection conditions
Type inspection shall be carried out in one of the following situations.
a) When the material, structure and process have obvious changes after the
first production or normal production, which may affect the product
performance;
7.3.2 Inspection items
All items specified in 5.2 ~ 5.6.
7.3.3 Group-batch
Use 100 pieces as a batch; perform random sampling from a batch of products
which approach regular inspection.
7.3.4 Sampling
Randomly select 4 pieces from the inspection batch.
7.3.5 Judgement rules
8 Marking, packaging, storage, transportation
8.1 Marking
There shall be an obvious mark on each grating, including product mark,
inspector code, factory name and production date.
8.2 Packaging
The grating shall be edged with cardboard and be bound properly.
8.4 Transportation
8.4.1 When transporting the grating, the bottom of the vehicle and ship shall be
flat; during the long-distance transport, it shall be bound firmly to avoid falling.
JC/T 1026-2007
JC
BUILDING MATERIAL STANDARD OF
THE PEOPLE'S REPUBLIC OF CHINA
ICS 91.060.20
Q 23
Filing No.. 20464-2007
Glass fiber reinforced thermosetting resin grating for
supporting loads
Issued on. APRIL 13, 2007
Implemented on. OCTOBER 01, 2007
Issued by. National Development and Reform Commission of PRC
Table of Contents
Foreword... 3
1 Scope... 4
2 Normative references... 4
3 Terms and definitions... 5
4 Product specifications, size and marking... 5
5 Technical requirements... 9
6 Test method... 11
7 Inspection rules... 12
8 Marking, packaging, storage, transportation... 14
Appendix A (Normative) Load-bearing capacity test of glass fiber reinforced
thermosetting resin grating (3-point bending method)... 15
Foreword
Appendix A of this standard is a normative appendix.
This standard was proposed by China Building Materials Industry Association.
This standard shall under the jurisdiction of the National Fiber Reinforced
Plastics Standardization Technical Committee.
The main drafting organizations of this standard. Haohua Zhongyi FRP Co.,
Ltd., Nantong Meigu Composite Material Co., Ltd., Nantong Mingkang
Composite Material Co., Ltd., Nantong Qiangli Plastic Co., Ltd., Beijing FRP
Institute Composite Material Co., Ltd.
1 Scope
This standard specifies the structure, size, product model and marking,
technical conditions, load-bearing requirements, inspection rules and
packaging, marking, storage and transportation of glass fiber reinforced
thermosetting resin grating (hereinafter referred to as grating).
This standard applies to industrial platforms, floors, walkway paving, stair
treads, trench covers, fences and other load-bearing gratings in petrochemical,
metallurgy, light industry, shipbuilding, energy, municipal and other industries.
Non-load-bearing gratings can be implemented with reference to this standard.
2 Normative references
The provisions in following documents become the provisions of this Standard
through reference in this Standard. For the dated references, the subsequent
amendments (excluding corrections) or revisions do not apply to this Standard;
however, parties who reach an agreement based on this Standard are
encouraged to study if the latest versions of these documents are applicable.
For undated references, the latest edition of the referenced document applies.
GB/T 1446-2005 Fiber-reinforced plastics composites - The generals of test
methods
GB/T 1449-2005 Fiber-reinforced plastic composites - Determination of
flexural properties
GB/T 1462-2005 Test methods for water absorption of fiber reinforced
plastics
GB/T 3854-2005 Test method for hardness of reinforced plastics by means
of Barcol impresser
3 Terms and definitions
The following terms and definitions apply to this standard.
3.1
Molded grating
A board with a certain open rate made by a special process on a customized
mold with thermosetting resin as the matrix and glass fiber roving as the
skeleton. The product is composed of several shapes of gratings; has the
characteristics of bidirectional bearing in the longitudinal and lateral
directions;
3.2
Pultruded grating
A board with voids made by a certain assembling process with the pultruded
I and T profiles as load-bearing ribs, pipes or bars as connecting rods. The
product has high strength in the direction of the load-bearing ribs; it is often
used under conditions of large spans. The pultruded grating is as shown in
Figure 2.
4 Product specifications, size and marking
4.1 Grating size
4.1.1 The grid sizes of commonly used molded gratings are as shown in Figure
3 and Table 1.The gratings of other sizes can be designed according to user
requirements.
4.1.2 The commonly used pultruded grating structure is as shown in Figure 4
and Figure 5.The specifications are as shown in Table 2.The gratings of other
specifications can be designed according to user requirements.
5 Technical requirements
5.1 Raw materials
5.1.1 Resin
5.1.1.1 The unsaturated polyester resin used in the grating shall meet the
requirements of GB/T 8237-2005; the epoxy resin used shall meet the
requirements of GB/T 13657-1992.Other resins shall meet the requirements of
corresponding standards.
5.2 Appearance
The grating shall be smooth, flat, uniform in color, free of delamination, burrs,
cracks, fiber exposure or impurities. It is not allowed for pores larger than Phi3
mm. The number of pores larger than 1 mm and less than 3 mm on any 300
mm x 300 mm area of the grating plate shall not exceed 10.
5.3 Grating size deviation
5.3.1 The length and width deviation of the grating is. -3 mm ~ +3 mm for
molded grating and -6 mm ~ +6 mm for pultruded grating.
5.5 Barcol hardness
Barcol hardness is not less than 40.
5.6 Load-bearing capacity
5.6.1 See Table 3 for design loads.
5.6.2 For load-bearing structures such as access platforms, stairwell platforms,
overhaul platforms, under the design loads listed in Table 3, the deflection at
the midpoint of the grating shall not be greater than 1/120 of the span, the
maximum shall not exceed 9 mm. Meanwhile it shall meet the following
requirements.
6 Test method
6.1 Appearance
6.1.1 Use visual inspection for appearance.
6.1.2 The size of the pores on the outer surface shall be inspected with a vernier
caliper which has an accuracy of 0.02 mm.
6.2 Determination of grating size
6.2.1 Divide equally into four parts along the width of the grating. Use a steel
tape which has an accuracy of 1 mm to measure the length of the grating. Take
the arithmetic average of the three measurement results.
6.3 Water absorption
The water absorption test is carried out according to GB/T 1462-2005.
6.4 Barcol hardness
Barcol hardness test is carried out according to GB/T 3854-2005.
6.5 Load-bearing capacity
The load-bearing capacity test is carried out in accordance with Appendix A.
7 Inspection rules
7.1 Inspection category
Product inspection is divided into exit-factory inspection and type inspection.
7.2 Exit-factory inspection
7.2.1 Inspection items
The exit-factory grating shall be inspected for appearance, dimensional
deviation and Barcol hardness.
7.2.3 Judgement rules
7.3 Type inspection
7.3.1 Inspection conditions
Type inspection shall be carried out in one of the following situations.
a) When the material, structure and process have obvious changes after the
first production or normal production, which may affect the product
performance;
7.3.2 Inspection items
All items specified in 5.2 ~ 5.6.
7.3.3 Group-batch
Use 100 pieces as a batch; perform random sampling from a batch of products
which approach regular inspection.
7.3.4 Sampling
Randomly select 4 pieces from the inspection batch.
7.3.5 Judgement rules
8 Marking, packaging, storage, transportation
8.1 Marking
There shall be an obvious mark on each grating, including product mark,
inspector code, factory name and production date.
8.2 Packaging
The grating shall be edged with cardboard and be bound properly.
8.4 Transportation
8.4.1 When transporting the grating, the bottom of the vehicle and ship shall be
flat; during the long-distance transport, it shall be bound firmly to avoid falling.
......
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 14 pages — is available in the English PDF.
Referenced standards
Normative references
- GB/T 1446-2005Fiber-reinforced plastics composites-The generals for determination of properties
- GB/T 3854-2005Test method for hardness of reinforced plastics by means of a Barcol impresser
GB/T 1449-2005 · GB/T 1462-2005
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