Status Report on Standard Specifications and Codes of Practice Department of Transport RPF November 2004

CONTENT 1.INTRODUCTION 2.BACKGROUND 3.METHODOLOGY 4.ASSESSMENT OF CURRENT GUIDELINES, STANDARDS AND SPECIFICATIONS

1. INTRODUCTION The development and maintenance of guidelines, standards and specifications is a very important component of managing a good network of road infrastructure. Over time, new industry practice, new technologies, the introduction of materials, a shortage of materials are a few instances which necessitate an update, revision or introduction of new guidelines, standards and specifications. This study was conducted to determine the current state of the guidelines, standards and specifications that are currently in use in the provision and maintenance of the South African network of roads.

2. BACKGROUND Road network development and maintenance has traditionally been a responsibility of roads authorities across the various spheres of government. In 1998 the Chief Directorate: Roads of the DoT became the South African National Roads Agency Limited (SANRAL), which is now responsible for our primary road network. With this came an exodus of technical expertise within the DoT, which had a negative impact on some of the core technical functions that were carried out by the department. One such function was the area of infrastructure standards. Custodianship for the development and maintenance of infrastructure standards has traditionally been with the Committee of Land Transport Officials (COLTO) – now known as the Committee of Transport Officials. The DoT has recently created a new Chief Directorate: Transport Infrastructure (now Infrastructure Network Development) to work jointly with roads authorities and through existing and new structures to provide strategic leadership and to address shortcomings in areas such as infrastructure standards.

3. METHODOLOGY The study was conducted through a detailed assessment of the content, quality and relevance of each guideline. Involved the preparation of a template that was used in interviews with specific industry players. Organizations and forums that were approached include: - Roads Coordinating Committee (RCC) and its relevant sub-committees - South African Bitumen and Tar Association (SABITA) - CSIR - Provincial Roads Authorities - Road Pavements Forum - SANRAL - Cement and Concrete Institute (C&CI) - SATCC TU

ASSESSMENT TEMPLATE NoTitleStatusComments TRH1Prime coats and bituminous curing membranes Draft Observation Coal tar products effect on environment should be taken into account Recommendation Assess, revise, amend to latest practice and finalise Priority Medium TRH2Geotechnical and soil engineering mapping for roads and the storage of materials data Final Observation Outdated Recommendation Update and revise to current practice Priority Medium

4. ASSESSMENT OF CURRENT GUIDELINES, STANDARDS AND SPECIFICATIONS COTO TRH DOCUMENTS HIGH PRIORITY - TRH 4: Structural Design of Flexible Pavements for Interurban and Rural Roads. - TRH 7: Use of Bitumen Emulsions in the Construction and Maintenance of Roads. - TRH 11: Guidelines for the Conveyance of Abnormal Loads. - TRH 12: Flexible Pavement Rehabilitation Investigation and Design. - TRH 14: Guidelines for Road Construction Materials. - TRH 17: Geometric Design of Rural Roads. - TRH 20: Structural Design, Construction and Maintenance of Unpaved Roads. - TRH 22: Pavement Management Systems.

COTO TRH DOCUMENTS DRAFTS - TRH 1: Prime Coats and Bituminous Curing Membranes. - TRH 3: Surfacing Seals for Rural and Urban Roads. - TRH 4: Structural Design of Flexible Pavements for Interurban and Rural Roads. - TRH 7: Use of Bitumen Emulsions in the Construction and Maintenance of Roads. - TRH 12: Flexible Pavement Rehabilitation Investigation and Design. - TRH 13: Cementitious Stabilizers in Road Construction. - TRH 15: Subsurface Drainage for Roads. - TRH 16: Traffic Loading for Pavement and Rehabilitation Design. - TRH 19: Standard Nomenclature and Methods for Describing the Condition of Jointed Concrete Pavements. - TRH 20: Structural Design, Construction and Maintenance of Unpaved Roads. - TRH 21: Hot Mix Recycling. - TRH 22: Pavement Management Systems.

COTO TMH DOCUMENTS HIGH PRIORITY - TMH 1: Standard Methods of Testing Road Construction Materials. - TMH 5: Sampling Methods for Road Construction Materials. - TMH 6: Special Methods for Testing Roads. - TMH 7: Code of Practice for the design of Highway Bridges and Culverts in SA, Parts 1 & 2. - TMH 7: Code of Practice for the design of Highway Bridges and Culverts in SA, Parts 3. - TMH 9: Pavement Management Systems: Standard Visual Assessment Manual for Flexible Pavements. - TMH 11: Standard Survey Methods. - TMH 12: Pavement Management Systems: Standard Visual Assessment Manual for Unsealed Roads, Version 1.

COTO TMH DOCUMENTS DRAFTS - TMH 3: Traffic Axle Load Surveys for Pavement Design. - TMH 6: Special Methods for Testing Roads. - TMH 8: Verkeerstellings Presedures vir Buitestedelike Paaie. - TMH 12: Pavement Management Systems: Standard Visual Assessment Manual for Unsealed Roads, Version 1.

COTO UTG DOCUMENTS HIGH PRIORITY - UTG 1: Guidelines for the Geometric Design of Urban Arterial Roads. - UTG 5: Geometric Design of Urban Collector Roads. - UTG 7: Geometric Design of Urban Local Residential Streets. - UTG 10: Guidelines for the Geometric Design of Commercial and Industrial Local Streets.

COTO UTG DOCUMENTS DRAFTS - UTG 1: Guidelines for the Geometric Design of Urban Arterial Roads. - UTG 2: Structural Design of Segmental Block Pavements for South Africa. - UTG 3: Structural Design of Urban Roads. - UTG 5: Geometric Design of Urban Collector Roads. - UTG 6: Guidelines on Maintenance Management for Large Municipalities. - UTG 7: Geometric Design of Urban Local Residential Streets. - UTG 9: Guidelines for the Transportation System Management Process. - UTG 10: Guidelines for the Geometric Design of Commercial and Industrial Local Streets. - UTG 11: Guidelines for the Public Participation in Land Use/Transport Planning. - UTG 12: Pavement Management Systems: Standard Visual Assessment Manual for Flexible Pavements in Urban Areas.

SPECIFICATIONS HIGH PRIORITY - COLTO Standard Specifications for Road and Bridge Works for State Road Authorities. - COLTO General Conditions of Contract for Road and Bridge Works for State Road Authorities. - FIDIC General Conditions of Contract for Works of Civil Engineering Construction (6 th Edition). - Design and Upgrade of Highway Bridges.

SATCC DOCUMENTS South Africa, Zimbabwe and Mozambique have had no significant problems, although there is some confusion in South Africa on whether to use the SATCC documents, SANRAL’ Geometric Design Manual or the TRH 17. Namibia have had problems with loopholes for litigation. Tanzania need a longer assessment period. No feedback from the rest of the SADC countries.

RMC Priority List 1.TMH 1 2.TRH 20 3.TRH 12 4.TRH 14 5.TMH 8 6.TRH 4