Scope
This standard specifies safety requirements for the design, manufacturing, testing, and safe use of portable wooden ladders. This standard is applicable to portable wooden single ladders and portable wooden folding ladders used in various production activities
Normative References
The clauses in the following documents become clauses of this standard through reference in this standard.
. For dated references, all subsequent amendments (excluding corrected content) or revisions are not applicable to this standard. However, it is encouraged for all parties who have reached agreements based on this standard to investigate whether the latest versions of these documents can be used. For undated references, the latest version applies to this standardGB/T 4823 Sawn Timber Defects
GB/T17889.1 Ladders Part 1: Terminology, Types, and Functional Dimensions GB 50005-2003 Code for Design of Wood Structures
Terminology and Definitions
This standard adopts the terms and definitions in GB/T 4823, GB/T 17889.1, and the following terms and definitions. 3.1
Portable wood single ladder (straight ladder). 3.2
Portable wood step ladder
It is made by twisting the front and rear parts, and the length is not adjustable. The main components (ladder frame, steps or rungs) are portable self-supporting ladders made of wood, which can be climbed by one side (front) (such as a step ladder) or both sides (such as a double-sided step ladder or a bracket ladder)
3.3
Portable wood trestle ladder
It is a portable self-supporting ladder made of wood, with two identical ladder segments connected by a chain at the top to form the same angle as the support surface, and the length cannot be adjusted
3.4
Ladder frame (ladder beam) stile (rail
The side components of the ladder that support the treads (or rungs) or other lateral load-bearing components.
. 3.5
Step (rung)
Function of testing report:
1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report
2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms 3. Used as a sales report: issuing legally effective testing reports to make consumers more confident 4. Papers and research: Provide professional personalized testing needs 5. Judicial services: providing scientific, fair, and accurate testing data 6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problemsBaijian and testing process:
1. Telephone communication and confirmation of requirements
2. Recommend solutions and confirm quotations 3. Mail samples and arrange testing 4. Progress tracking and result feedback 5. Provide reports and after-sales service 6. If urgent or priority processing is requiredTesting and testing characteristics:
1. The testing industry is fully covered, meeting different testing needs
2. Fully cover the laboratory and allocate localized testing nearby3. Engineers provide one-on-one services to make testing more accurate
4. Free initial testing, with no testing fees charged
5. Self service order delivery for free on-site sampling
6. Short cycle, low cost, and attentive service 7. Possess authoritative qualifications such as CMA, CNAS, CAL, etc 8. The testing report is authoritative and effective, and is generally used in China