00142709

Component

In Virginia eight district engineers and 96 county engineers are responsible for the design of secondary and subdivision roads. A new design method for secondary and subdivision roads based on the experiences of these district and county engineers and on AASHO Road Test results was developed. At the recommendation of the engineers, a soil support value-- the sum of the California bearing ratio and the soil resiliency values--was developed. To meet the requirements of the design method, thickness equivalencies (strength of each paving material per inch depth) were developed. To faclitate use of the method, a design momograph based on subgrade soil support values and traffic was devised. The new design method (a) provides great flexibility in the choices and thicknesses of paving materials (it accommodates previously used design techniques and gives additional design choices); (b) is so simple technicians can use it with ease; and (c) provides a much improved method of evaluating soil support.

Proceedings of a work shop held June 16-19, 1975, in Boise, Idaho by the Transportation Research Board.

01411726

pp 218-229

1975

Transportation Research Board Special Report

Print

Figures (8) ; References (2) ; Tables (3)

Bearing capacity; Design methods; Secondary roads; Streets; Subdivisions; Thickness

Design; Highways; Pavements

TRIS, TRB, ATRI

Feb 1 1977 12:00AM

• A METHOD OF FIELD DESIGN APPLIED TO FOREST ROADS
• A NEW APPROACH TO HIGHWAY DRAINAGE DESIGN
• A PAVEMENT MANAGEMENT CONCEPT FOR LOW-VOLUME ROADS
• A PROPOSED APPROACH TO SETTING ROAD MAINTENANCE LEVELS FOR FOREST ROADS
• AN INVESTIGATION INTO ROAD DETERIORATION IN KENYA
• ANALYTICAL PLANNING TECHNIQUES FOR NATIONAL FOREST ROADS
• CRITERIA FOR SEALING OR OTHER SURFACE MAINTENANCE ON BITUMINOUS ROADS
• DESIGN, CONSTRUCTION, AND PERFORMANCE OF A FOREST SERVICE ASPHALT-STABILIZED SAND TEST ROAD
• DILEMMAS IN THE ADMINISTRATION, PLANNING, DESIGN, CONSTRUCTION, AND MAINTENANCE OF LOW-VOLUME ROADS
• Economical Structures for Low-Volume Roads
• EXPERIENCE WITH THE BENKELMAN BEAM ON CANADIAN FOREST ROADS
• FOREST ROAD CLASSIFICATION IN EASTERN CANADA
• HIGHWAY DESIGN STANDARDS STUDY
• IMPACTS OF HIGH-INTENSITY RAINSTORMS ON LOW-VOLUME ROADS AND ADJACENT LAND
• INTRODUCTION TO SPECIAL REPORT LOW VOLUME ROADS
• INVESTIGATION OF PRECAST AND PRESTRESSED CONCRETE BRIDGE FOR LOW-VOLUME ROADS
• INVESTIGATION OF VEHICLE OPERATION COSTS IN KENYA
• LOAD-SUPPORTING CAPABILITY OF LOW-VOLUME ROADS
• LOW-VOLUME ROAD PAVEMENTS
• MANAGING A 200,000-MILE ROAD SYSTEM: OPPORTUNITY AND CHALLENGE
• METHODOLOGY FOR ESTABLISHING THE ECONOMIC VIABILITY OF LOW- VOLUME ROADS
• METHODS FOR ESTIMATING TRAFFIC VOLUMES AND COMPOSITION ON NATIONAL FOREST ROADS
• MILITARY INTEREST IN LOW-VOLUME ROADS
• MINUTEMAN ACCESS ROADS
• MODERN COUNTY ROAD SYSTEMS
• OPTIMAL POLICIES FOR TRANSPORTING ROCK AGGREGATE TO LOW- VOLUME ROADS
• PAVEMENT DESIGN ON LATERITIC CLAYS: IFE-BENIN CITY NIGERIA, TRUNK ROAD REHABILITATION PROJECT
• RETAINING WALL PRACTICE AND SELECTION FOR LOW-VOLUME FOREST ROADS
• ROADS IN DEVELOPING COUNTRIES
• SIMPLIFIED SLOPE DESIGN FOR LOW-STANDARD ROADS IN MOUNTAINOUS AREAS
• SOIL-LIME MIXTURES FOR CONSTRUCTION OF FINE-GRAINED SOIL PAVEMENTS
• STATE OF THE ART OF EMULSION PAVEMENTS IN REGION G OF THE U.S. FOREST SERVICE
• TECHNIQUES FOR MEASURING VEHICLE OPERATING COST AND ROAD DETERIORATION PARAMETERS IN DEVELOPING COUNTRIES
• THE FOREST SERVICE'S COMPUTER-AIDED ROAD DESIGN SYSTEM
• THE KENYA ROAD TRANSPORT INVESTMENT MODEL
• TIMBER CRIB RETAINING STRUCTURES
• TOPOMETRICS: A SYSTEM FOR EVALUATING ROUTE ALTERNATIVES
• USE OF ASPHALT RUBBER ON LOW-COST, LOW-VOLUME STREETS