7 and 8 - Government of Botswana

More documents

Recommendations

Info

ROADS DEPARTMENT Under the policy direction of the Ministry of Works, Transport & Communications, Roads Department is responsible for providing an adequate, safe, cost-effective and effi cient road infrastructure within the borders of Botswana as well as for facilitating cross border road communications with neighbouring countries. Implied in these far-ranging responsibilities is the obligation to: 1. Ensure that existing roads are adequately maintained in order to provide appropriate level of service for road users. 2. Improve existing roads to required standards to enable them to carry prevailing levels of traffi c with the required degree of safety. 3. Provide new roads to the required geometric, pavement design and safety standards. The Department has been vested with the strategic responsibility for overall management of the Public Highway Network (PHN) of some 18,300 km of roads. This confers authority for setting of national specifi cations and standards and sheared responsibility with the District Councils and Department of Wildlife and National Parks for the co-ordinated planning of the PHN. Roads Department is also responsible for administering the relevant sections of the Public Roads Act, assisting local road authorities on technical matters and providing assistance in the national effort to promote citizen contractors in the road construction industry by giving technical advice wherever possible. This task is facilitated by the publication of a series of Technical Guidelines dealing with standards, general procedures and best practice on a variety of aspects of the planning, design, construction and maintenance of roads in Botswana that take full account of local conditions. � Guideline No. 1: The Design, Construction and Maintenance of Otta Seal (June, 1999). Addendum to Guideline No. 1 – Seminar Proceedings (June, 2000). � Guideline No.2–Pavement Testing, Analysis and Interpretation of Test Data (May, 2000). Addendum to Guideline No. 2 – Seminar Proceedings (January, 2002). � Guideline No. 3 – Methods and Procedures for Prospecting for Road Construction Materials (December, 2000). Addendum to Guideline No. 3 – Seminar Proceedings (April, 2002). � Guideline No. 4 - Axle Load Surveys (December, 2000). Addendum to Guideline No. 4 – Seminar Proceedings (January, 2002). � Guideline No. 5 - Planning and Environmental Impact Assessment of Road Infrastructure (September, 2001). � Guideline No. 6 – The Prevention and Repair of Salt damage to Roads and Runways (September, 2001). Addendum to Guideline No. 6 – Seminar Proceedings (April, 2002). � Guideline No. 7 – Technical Auditing of Road Projects (December, 2001). Addendum to Guideline No. 7 – Seminar Proceedings (February, 2004). � Guideline No. 8 - The use of Silcrete and other Marginal Materials for Road Surfacing (August 2002). Addendum to Guideline No. 8 – Seminar Proceedings (February, 2004). Proceedings of Roads Department Workshop June 2003, Guidelines 7 and 8 3
FOREWORD Guideline no 7 Technical Auditing of Road Projects This guideline document on technical auditing of road projects is a step in the right direction towards ensuring that the road projects undertaken in Botswana are appropriately designed and constructed. Financial auditing of public funded projects are done but it is the technical audit which had not received any attention in the past. The need for producing a guideline on such an important aspect arose from the fact that very recently, some of the road projects implemented in the country have either failed pre - maturely and/or are in the process of showing distress ultimately leading to failure in the near future. The irony is that it has not been possible to portion accountability to parties involved in the contract. It is my hope that Roads authorities, administrators and organizations will start thinking about carrying out Technical Audit of road projects in order to ensure that the government and public in general get value for investment incurred. The guideline describes step by step procedures involved in a technical audit process and details the methodology required to conduct a technical audit. This guideline will certainly go a long way in implementing road projects in the right manner and introduce accountability on the part of all Stakeholders, the Client, Consultant or the Contractor. Gaborone December 2001 Andrew Nkaro Director of Roads Roads Department Ministry of Works and Transport Guideline no 8 The use of Silcrete and Other Marginal Materials for Road Surfacing The scarcity of good quality stone, which could be used as road surfacing aggregate in some parts of Botswana, dictated the use of stones, which marginally meet the conventional specifi cations. This Guideline on the use of Silcrete and Other Marginal Materials for Road Surfacing is a very useful document in that it captures the experiences gained, over a period of twenty years, towards utilizing marginal/inferior materials available in Botswana when constructing road surface treatments. Experience has shown that under appropriate circumstances the use of marginal stones in surface treatments has produced durable and cost effective seals, which performed adequately under traffi c and the harsh, semi arid climate that prevails in Botswana. The Guideline makes the experiences gained over the years readily available for consideration and will act as a practical reference for engineers and technicians involved in the road building industry in Botswana. The guideline deals specifi cally with the properties, applications and performance of marginal aggregates in surface treatments. It is my sincere hope that this guideline will be useful to the road building industry in Botswana and will assist in ensuring that, under appropriate circumstances, marginal materials will fi nd their optimal use in road surfacing without necessarily compromising on quality and performance of the surface treatment as well as assist practicing engineers in judicious selection of marginal aggregates towards their appropriate use in the construction and maintenance of surface treatments in the most cost – effective manner. Gaborone August 2002 Andrew Nkaro Director of Roads Roads Department Ministry of Works and Transport 4 Proceedings of Roads Department Workshop June 2003, Guidelines 7 and 8
Page 1 and 2: MINISTRY OF WORKS AND TRANSPORT Min
Page 3: Ministry of Works and Transport Roa
Page 7 and 8: TABLE OF CONTENTS 1. INTRODUCTION .
Page 9 and 10: The two Guidelines being presented
Page 11 and 12: 2.3.2 Scope and Use of Guideline 10
Page 13 and 14: 2.3.5 Bituminous Surfacings 12 Issu
Page 15 and 16: 3. PRESENTATION OF GUIDELINE NO. 7
Page 17 and 18: 16 - It is fully agreed that the au
Page 19 and 20: ● The Technical Audit is carried
Page 21 and 22: ANNEX 1 PROGRAMME 20 ��
Page 23: Name Organisation Postal Address E.

7 and 8 - Government of Botswana

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?