BS ISO 22389-2:2020 pdf free.Timber structures – Bending applications of I-beams.Component performance and manufacturing requirements.
A manufacturing standard shall be written and maintained for each product and each production facility and shall be the basis for the quality assurance at that location. As a minimum, it shall include the following: a) material specifications, including incoming material inspection and acceptance requirements, and specifications for regrading flange stock, when applicable; b) process controls for each operation in the production of the product;  c) quality control, inspection and testing procedures and frequencies; d) finished product identification, handling, protection and shipping requirements; e) when applicable, the minimum permitted flange end joint spacing. All in-house persons responsible for quality control shall demonstrate that they have adequate knowledge of the manufacturing process, of the inspection and test procedures used to control the process, of the operation and calibration of the recording and test equipment used and of the maintenance and interpretation of quality control records.All pertinent records shall be maintained on a current basis and be available for review. As a minimum,  such records shall include: a) all inspection reports and records of test equipment calibration, b) all test data, including retests and data associated with rejected production, and c) details of any corrective actions taken and the disposition of any rejected production, resulting from tests or inspections.The following objectives shall be met simultaneously by the quality-control testing programme: a) provide test data for use in maintaining and updating characteristic values, and b) verify production process and material quality on a daily basis. NOTE A characteristic value is a value of a property taken to represent the property of a designated population using a process of sampling, testing and evaluation. Characteristic values for strength and stiffness are described in and determined by the requirements of ISO 22389-1.When plant qualification is based on no more than the minimum testing required in this document, the producer shall initiate higher daily test frequencies and retest levels. All new producers shall consider intensify quality control in early production.BS ISO 22389 pdf download.