8/3/2019 c3010 Highway

1/11

8/3/2019 c3010 Highway

2/11

2.1.4. DETERMINE SITE INSPECTION AND

INVESTIGATION WORKS

Introduction.

A regime of highway inspections is necessary to identify

associated defects, the need for routine/planned maintenance

work and unlawful obstruction/interference with the highway. To

ensure a consistent Countywide approach a formalised systemthat prescribes the frequency of inspections and the method of

assessment, recording and actioning of highway defects has

been adopted.

8/3/2019 c3010 Highway

3/11

A) PRELIMINARY WORK

There are 3 stages in planning the construction of a newroad :

1.1. Stage 1 Prepare a preliminary report

1.2. Stage 2 Submit the preliminary report

1.3. Stage 3 Finalize the report

8/3/2019 c3010 Highway

4/11

1.1. STAGE 1 PREPARING A

PRELIMINARY

REPORT(PROCEDURE)

Traffic survaying work

Evaluation on the information and planning. Consider suggestion if there is anotheruseful choice

Design using 6:1 mile scale

Budget of the construction and its advantadges

Identify the certain road

Report on the alternative road, which include the topography, geology and traffic flow,soil consuming and historical places

Obtain cooperation from the related group such as town council and state government

If the project is over budgeted the ministry must be inform and no further work shallbe proceed

8/3/2019 c3010 Highway

5/11

1.2. STAGE 2 SUBMITTING THE

PRELIMINARY

REPORT- Explain about the proposal and its alternatives of the identified project.- Then submitted to the person in charged to obtain permission

- This following question need to be considered :

Are the suggestion fulfilled the planning needs at the national level

Are the advantages accepted?

Are the suggestion solution accepted in term of political or enviromental aspect.

- While the preliminary report is being studied further, other experiments should

be done such as:-

a) Further soil investigation

b) The plan preparation on the new road and other related roads. Report and work are tobe prepared . It will only be submitted if the preliminary report is accepted.

8/3/2019 c3010 Highway

6/11

1.3. STAGE 3 FINALIZING THE REPORT

a) When the preliminary is accepted, prepare the road plan with1:2500 scale

b) When the final report is completed, submit it to the head quarter

for approval. Here, a right budget and advantages of the project

shall be included for approval purpose

c) After the costing and advantages valuation are done, this finalreport will be submitted to the responsible person to start of the

construction work

d) If there is no protest from the public or other parties in fact, the

tender will be offered and the selected contractor. Then all the

construction work will starte) If there is a protest, a committee member will be set up for futher

investigation

8/3/2019 c3010 Highway

7/11

PRELIMINARY REPORT CONTENT

a. The existence situation which in physical shape and scheme objective of the

existence road.b. The traffic situation - based on the latest data (not more than 3 years) should include

content total of traffic user

c. The alternative roads, which include the costing, advantages and the environtmentalimpact.

d. Road classification identify the road classification that is to be built ; highway orordinary road

e. Negotiation on the report and the resultf. Budget the total of roadwork cost, bridges work and earthwork approximately 20%

from the previous budget. :

- site clearing cost

- earthwork cost

- pavement construction and road shoulder work cost

- road furniture work- contingency stretch cost

g. Valuation is to see the economical aspect of the project

h. Enclosed Plan Plan 6 : 1mile scale is used for new scheme. For the city or villagearea a bigger scale is used..

8/3/2019 c3010 Highway

8/11

8/3/2019 c3010 Highway

9/11

C) DETERMINATION OF GROUND PROFILE

AND

SOIL SAMPLE EXTRACTION

Analysis of dried, ground, sieved soils allows for more convenient sample handling

and greater reproducibility of results in comparison with analysis of field-moist

soil.

- The grade line may raised due to any of the following reasons :

I . To keep the sub grade above the high ground water level

II - To prevent damage to pavement due to surface water and capilary water

iii - To maintain the design standard of the highway with respect to the highway

with respect to the vertical alignment.

8/3/2019 c3010 Highway

10/11

D) DETAILED SOIL INVESTIGATION

The purpose of the soil investigation were:

a. To explore the sub-surface condition of the proposed development area and to

provide general data relating to the project.

b. To carry out field standard penetration test (S.P.T 63.5 kg hammer having a free

fall of 760mm) to determine the natural bearing resistance of the subsoil for the

purpose of the design.

c. To obtain disturbed and undisturbed soil samples for carrying out the laboratorytests to determine the natural and relevant physical properties of the subsoil

pretaining to the site for the purpose of design.

8/3/2019 c3010 Highway

11/11

2.1.5. PHYSICAL PRINCIPLES OF

DETERMINING ROAD AND HIGHWAY

CARRIAGEWAY1. Identify the problem intraffic congestion, accident and environtment by making a

research on transportion and problematic areas.2. Identify the maintainance and new constuction work needed.

3. Identify the organization and ministries that are responsible with the constructionwork such as JKR, TNB etc.

4. Collect the information for briefing.

5. Prepare the Plan

6. Draw a temporary layout sketch and include related suggestion7. Get information about the area

8. Prepare a detailed layout with consideration to environmental impact

9. Make a Valuation

10. Choose the best road to be constructed . However, the alternative road should beequally prepare in the planning.