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Monday 01 June 2026 02:18:38 GMT
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Nguyễn Mai :
mã q028 giá bao tiền
2026-06-04 12:31:03
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Mẹ Gia Huy :
Q028
2026-06-06 17:28:23
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![[ Ep - 58 ] Why is subgrade and sub-base important in road construction? Answer -- The subgrade is the natural or compacted soil layer that forms the foundation of a road, and its strength directly determines how much load the finished pavement can safely carry without deforming. The sub-base sits above the subgrade as a layer of selected granular material that spreads traffic load more evenly, improves drainage, and prevents softer subgrade soil from mixing into the layers above it. Together, a well-prepared subgrade and sub-base form the structural foundation that supports every layer built above them, and weakness at this stage leads to rutting, cracking, and premature failure of the entire road surface. #pahadieducation7 #nepaliconstitution #foryou #civilengineering #nepaliconstruction](/video/cover/7674292625217719572.webp)
