IS 4905 provides standardized methods for random sampling in quality inspection. It covers simple random, systematic, stratified, and cluster sampling techniques. Referenced by virtually all IS testing standards that require sampling (concrete, soil, steel, aggregates, etc.).
Provides methods and procedures for drawing random samples from lots or consignments for inspection purposes. Covers simple random sampling, systematic sampling, and stratified sampling techniques.
Practical Notes
! Referenced by almost every IS testing standard — whenever a code says 'sample as per IS 4905', this is the standard.
! For concrete cube sampling, IS 4905 is used in conjunction with IS 516 and IS 1199.
! Simple random sampling is sufficient for most construction material testing — stratified sampling is rarely needed on site.
! Always document the sampling procedure used — it is a common audit point in QA/QC inspections.