Is 456 Latest Amendment Pdf Hot! -

IS 456:2000

As of early 2026, the current active standard remains , with Amendment No. 6 (issued in June 2024) being the most recent finalized update. However, a major overhaul is underway with the Draft Fifth Revision (IS 456:202X) , which is expected to replace the 2000 version soon. ⚡ Key Updates in Amendment No. 6 (June 2024)

• Check cube acceptance criteria – the new statistical tables have different gradation classes.
• Ensure the cover blocks are increased from 20mm to 25mm for columns/beams in normal exposure.
• Verify that no beam has more than 2.5% tension steel (common in heavy loaded structures).

Strength Testing:

Updated procedures for concrete strength testing and characteristic compressive strength compliance. is 456 latest amendment pdf

New Cement Types

: Includes specifications for Composite Cement (IS 16415) and Portland Calcined Clay Limestone Cement (IS 18189). IS 456:2000 As of early 2026, the current

A:

Amendment No. 4 primarily changed durability (cover requirements), crack width limits, maximum reinforcement percentages for seismic zones, and acceptance criteria for concrete strength. Check cube acceptance criteria – the new statistical

Adds restrictions on using certain cements in underground structures or contact with groundwater in cold climates (predominantly below 15°C).