GSB Manufacturer in Udaipur – Granular Sub Base(GSB) is natural or designed construction material, used for road construction as a sub-base layer.

Granular Sub Base is a layer in road foundation just above the compacted sub-grade layer. GSB or granular sub-base prevents capillary water from rising; its particle size is so designed that the capillary action stops and cant go beyond GSB layer. Secondly, it works like a drainage layer where water can pass without damaging other road layers.