Compliance With Following National / International Standards: IS:9214-1979 This method for the determination of modulus of subgrade reaction of the soil in place (generally known as K-value of the subgrade ), for evaluation of strength of subgrade for roads, runway pavements and raft foundations. Further details available on our website. Price and specifications mentioned here are subject to change as per the application, customer requirements and prevailing market conditions. Please refer to us for the final rates and offer.