IS 3620

: 1979

laterite stone block for masonry

CurrentSpecializedSpecificationMaterials Science · Stones
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This standard specifies the requirements for laterite stone blocks used in masonry construction, covering standard dimensions, tolerances, dressing standards, and physical properties to ensure suitability for structural and architectural applications.

laterite stone block for masonry

Quick Reference Values
Standard lengths300, 400, 500, 600 mm
Standard widths150, 200, 250 mm
Standard heights150, 200, 250, 300 mm
Dimensional tolerance±5 mm
Minimum compressive strength35 kg/cm² (approx 3.5 N/mm²) typical for structural use
Practical Notes
Laterite stones are soft when freshly quarried containing natural moisture but harden significantly upon prolonged exposure to air; they should be cut and dressed early.
Due to the porous nature of laterite, exterior walls built with these blocks in high-rainfall regions often require protective pointing or plastering to prevent moisture ingress.
Ensure blocks are free from cracks, flaws, and significant voids before structural use.