MNL 116-21: Summary of Revisions-MNL 116-21 Revisions 220603

MNL 116-21 Revisions 220603

Pdf Summary

The document titled "MNL 116-21 Revisions" outlines the significant changes in requirements for MNL 116-21, with the aim of facilitating the updating of production processes and procedures, as well as quality manuals, by various stakeholders in the precast industry. The revisions can be categorized into different sections:<br /><br />General Revisions:<br />- Incorporation of requirements for self-consolidating concrete (TR-6)<br />- Removal of Product Dimension Tolerances from Appendix B and reference to MNL 135 for product dimension tolerances<br />- Special finish provisions still included in each division<br />- General alignment with MNL 117-13<br /><br />Quality System:<br />- Division 1 - Quality System outlines changes in documented procedures and management responsibilities for plant quality assurance program. Commentary provides clarification on citing appropriate codes and standards for specific products and end users.<br />- Division 2 - Production Practices outlines changes in personnel requirements and quality control for self-consolidating concrete, reinforcement, and welding.<br /><br />Raw Materials and Accessories:<br />- Division 3 - Raw Materials and Accessories outlines changes in requirements for concrete materials, aggregates, mixing water, reinforcement and prestressing materials.<br /><br />Concrete:<br />- Division 4 - Concrete outlines changes in mixture proportioning, batching equipment tolerances, equipment calibration, and acceptance testing for aggregates, concrete strength, slump, and density.<br /><br />Reinforcement and Prestressing:<br />- Division 5 - Reinforcement and Prestressing outlines changes in elongation calculation, force or gauge corrections, final tensioning of harped strands, and special testing for heat of hydration.<br /><br />Quality Control:<br />- Division 6 - Quality Control outlines changes in inspection, testing, laboratory facilities, and product tolerances.<br /><br />The document also includes appendices containing sample record forms, reference literature, sample tensioning data calculations, and metric conversions.

Keywords

MNL 116-21 Revisions

requirements

production processes

quality manuals

self-consolidating concrete

product dimension tolerances

quality system

raw materials and accessories

concrete

reinforcement and prestressing