ROAD CONSTRUCTION IN MALAYSIA

 HAPPY DEEPAVALI FOR INDIAN FOLLOWER

    Road construction cost for Malaysia especially in Sarawak go in 3 categories:

• Flat terrain between-RM 4 M to 6.0M
• moutain and velly area- RM 6.0 M to 10 M
• for black soil like organic soil come to RM 12.5 M per kilometre for single carriage at rural road.

Where the above figure come?

Actually road structure are consists:

1. Subgrade
2. Base
3. Sub Base
4. Binder Course
5. Wearing Course
6. Road furniture
• lane marking
• sign board
• guard rails
• road stud
7. Drainage

• Median drain
• Road shoulder drain

    FLAT TERRAIN

• preparing of subgrade is easy and the soil in good condition.stripping top soil and compact to required value and done a 95% ODD and can proceed lay a subbase and base.a thickness a depending on traffic density and CBR test for subgrade.laying of subbase also easy for flat terrain.laying a binder course,tack coat ,wearing course are same for 3 type of site constrains.a different only the thickness of the finishing coat.

MOUNTAIN AND VALLEY  TERRAIN

• to prepare a subgrade are not too easy.cut the mountain and fill to the valley.cutting process are simple compare to filling works.the fill are must be cleared and surveyed.the machinery like exavator,compactor and etc are difficult to bring down to the valley.the fill process are follow layer by layer.every 300 mm layer must be compacted and test and until reach the required level.this preparation of subgrade work as one of the factors that effect of cost construction.the laying of subbase,finishing coat are mostly same with others.

PEAT SOIL

• the difficult soil condition.the peat soil is popular along the beach and southern pennisular malaysia like johor.the characterictic of peat almost zero for structural usage.the peat soil have to mix with chemical item or cement to make it strong and a vertical drain are produced along the area to lowdown the water level.this kind of work cost a lot of money compare to the 2 above.laying of subbase and finishing coat are same for almost soil condition.

   ROAD FURNITURE

• the mountain and valley are used a lot of road furniture type.from special lane marking,many signboard and guardrail compare to the other areas.

DRAINAGE

• for a mountain and valley,to convey a surface water need a drainage system.from berm drain to cascade drain goes to shoulder drain plus water from median drain goes to box culvert and final discharge to nearest river compare to flat terrain only a simple drainage system to convey the surface water

There so many factors effecting the cost of road construction such as land issue,boundary issue and these factor are not taking into consideration when doing a comparison cost between the three condition of soil.may be for urban road the different of cost are minimal.