Pada umumnya, perkerasan jalan terd

Pada umumnya, perkerasan jalan terdiri dari beberapa jenis lapisan perkerasan yang tersusun dari bawah ke atas,sebagai berikut :

Lapisan tanah dasar (sub grade)
Lapisan pondasi bawah (subbase course)
Lapisan pondasi atas (base course)
Lapisan permukaan / penutup (surface course)

Hasil (Inggris) 1:

In General, the road roughness consists of several types of coating roughness which is composed from bottom to top, as follows: Basic soils (sub grade) The Foundation layer of the bottom (subbase course) The Foundation layer (base course) Surface coating/cover (surface course)

Hasil (Inggris) 2:

In general, pavement consists of several types of pavement layers are arranged from bottom to top, as follows: basic soil layer (sub-grade) under the foundation layer (subbase course) above the foundation layer (base course) surface layer / cover (surface course)