A value for these coefficients is assigned to each layer material in the pavement structure in order to convert actual layer thickness into structural number sn. There are numerous cases where measured deflections have decreased over time because of. Mar 19, 2007 hipave heavy duty pavement design workshop revised may 2009 main presentation one slide per page. Hipavea tool to assist in the mechanistic empirical design of heavy duty industrial flexible pavements, 10th. Base material shall be manufactured from hard, durable stone or recycled building materials free of clay lumps, organic matter and other deleterious substances. Pavements and surface materials page 2 slabs and paver stone embedded in reinforced concrete are examples of rigid pavement. The third edition of the british ports association heavy duty pavement design manual was published in 1996 and for the first time, a radically new way of analysing pavements is incorporated in the design method. Pavement design criteria for heavyload vehicles transportation. The main emphasis in this thesis will be on heavy duty pavements for ports. Design and performance of heavy duty asphalt pavements.
American concrete pavement association design of concrete pavement for city streets design and construction standards forcitystreets should provide for pavements with both long service life and low maintenance. Because this work related to road pavements, it was considered appropriate for the purposes of designing the webb dock heavy duty pavements that the allowable vertical compressive strain of the. The structural design of heavy duty pavements icpi. There are various pavement design recommendations in different publications from credible sources. Elastic design of flexible and rigid pavements in a pavement design for airfields from the united states army corps of engineering. Although the principles can be applied to various types of heavy duty pavements, this guide is primarily directed at port and container terminal pavements. It is not intended as definitive treatise, and it does not encompass the design of rigid pavements. These recommendations are based on a recent inhouse study of the selection between flexible and rigid pavements with particular focus on local conditions. The faa adopted these methodologies to address the impact of new landing gear configurations and increased pavement load conditions. Material selection, mixture design, structural design, and construction practices are important for the efficient design of heavy duty asphalt mixtures and pavements.
Heavy duty concrete pavement design spreadsheet civilweb. There are numerous cases where measured deflections have decreased over time because of age hardening of the asphalt layers. The pavement design engineer must integrate this information into the materials design package materials design report, pavement design summary and preliminary pavement structure cost estimate that will provide the necessary documentation and communication of this design process. Conventional flexible pavement design and construction methods have been easily. Traffic analysis predicted future 18kip esals in the design lane over the design period overlay design. Introduction to geotechnical issues in pavement design course no. Flexible vehicular brick paving whitacre greer pavers. Heavy duty concrete pavement design cannot use the same empirical methods as concrete road design.
Hipavea tool to assist in the mechanistic empirical design of heavy duty industrial flexible pavements. Engineers must always determine the requirements of the. Experience in heavyduty pavement design has shown that pavement. The design guides for ports are here divided into two categories, chart based design and program based design. Designs for other numbers of axle by use of the design protocols in the aashto 1993 pavement guide or the similar procedure in the odot pavement design manual or use of the free, online design tool, pavexpress, which can be accessed through the. Hipave a tool to assist in the mechanistic empirical design of heavy duty industrial flexible pavements wardle, l. In addition, a realistic assessment of cur rent and future truck loadings is. This is an introduction to flexible pavement design for engineers. Due to the likelihood of ongoing differential set heavy duty pavement design flexible over soft subgrade geotechnical engineering general discussion engtips. Design considerations for interlocking concrete pavements. Road pavement design guide home kent county council.
The fourth edition represents a significant step forward in the design of heavy duty pavements, i. This means that when a design has been produced using the design chart, the designer can generate many alternative design solutions using different materials and so investigate a full range of solutions. In general, heavy duty pavements are similar to road and highway pavements but are required to service vehicles with much higher wheel loads and different performance requirements. Caltrans context for heavy duty pavement design old pavement concrete pavement, urban highvolume freeways, 30 50 years old 23 asphalt surfaced. Further summary statistics are provided for the percent trucks in terms of percent medium duty and heavy duty. Heavy duty pavement design container terminals hipave. Information in this guide is based on research and development carried out around the world. Aashto method of flexible pavement design free download as powerpoint presentation. Rdgn042 pavement design for carriageway construction page 6 of 42 flexible and rigid pavements as well as some overriding factors to be noted. This paper presents the results of pavement plateau dimensioning, designed for traffic of heavy vehicles dump trucks exclusively with a weight of 2,350 kn, ie.
Jun 28, 2018 for heavy duty lots, the newer standard specifies four inches of asphalt over 12 inches of base vs. March 2015 flexible pavement design manual march 2015 implementation memo flexible pavement design manual. The guide is a collaborative effort currently involving dr. In other situations where this form of construction may be advantageous e. The manual has a 30year pedigree and is regarded as the benchmark by which other heavy duty pavement design.
The pavement design method for fully flexible pavements that has been used in the united kingdom since the mid 1980s was established by considering the performance of a wide range of experimental pavements which formed part of the trunk road network. The principles of pavement design for flexible, rigid and block pavements are described. Traffic the design procedure separates traffic into six classes i through vi. Introduction to flexible pavement design ced engineering. The asphalt institute in college park, maryland has issued a asphalt thickness and design, manual that suggests that asphalt thickness for roads be based on the following three factors. United kingdom uk pavement design the uk has been building heavy duty asphalt flexible pavements since the 1950s.
Heavy duty industrial pavement design guide pavement science. Materials investigation and selection information 1. In order to use the tables, appropriate traffic and subgrade classes must be selected as follows. For jointed concrete pavements, regardless of whether reinforced or nonreinforced, the aashtoodot method of pavement design calculates the same. Heavy duty pavement design flexible over soft subgrade. British ports association heavy duty pavement manual samt hipave som ar en. I am looking for advice on design methods for heavy duty pavement over weak, compressible subgrade conditions. In addition, a realistic assessment of cur rent and future truck loadings is essential to achieve. Catalogs of pavement designs flexible pavements of ohio.
Standard pavement designs and mix types catalogs of designs generic guidance on thickness, mix types and. Engineers are cautioned that much of pavement design is governed by codes, specifications and practices of public agencies. Flexible pavement design is based on the concept of structural number. Elastic design of flexible and rigid pavements in a pavement design for. Forewordthe purpose of this guide is to assist pavement designers and managers with the planning, design, construction, maintenance and rehabilitation of heavy duty flexible pavements. The pavement design guidance presented in this ac implements layered elastic theory for flexible pavement design and threedimensional finite element theory for rigid pavement design. This article presents the 1993 aashto guide basic design equation for flexible pavements. Concrete pavement design, construction, and performance. Leigh wardle of mincad systems, ian rickards pioneer road services pty ltd, melbourne, australia, john lancaster vicroads, australia and dr. The third edition of the british ports association heavy duty pavement design manual was published in 1996 and for the first time, a radically new way of analysing pavements is incorporated in the design. Heavy duty pavements are pavements subjected to the extremely heavy wheel loads associated with freight handling vehicles in industrial facilities. Heavy duty pavement design container terminals hipave the course is offered for those who are familiar with pavement design, or who have completed any of the cpee twoday flexible pavement design courses, and oneday mechanistic pavement design circly. Rdgn042 pavement design for carriageway construction page 1 of 42 contents page 1. The fourth edition represents a significant step forward in the design of heavyduty pavements, i.
This is because heavy duty concrete pavements must be designed to accommodate the loadings from heavy duty plant and equipment that are much larger than those allowed onto highways. This method is mainly based on the spanish guidelines for the. A radically new way of analysing pavements is incorporated in the design method. The newer standard specifies 5inch of concrete with no subbase. A request for a traffic study should include the following information. Aashto method of flexible pavement design road surface. Design procedure tables 41 thr ough 45 can be used dir ectly to select design thicknesses fr om the design input factors.
Structural layer coefficients ai are required for flexible pavement design. Standard specification for urban infrastructure works 47 edition 1, revision 02 oct 2010. Uk design curves for flexible pavements the heavy duty asphalt pavements studied have not suffered serious structural damage where the surface has been properly maintained. A five axle, 18 wheel tractor and semi case studies of public records spanning nearly 60 years have shown that heavy duty asphalt concrete pavements have an outstanding record for good performance and economy on.
Determine existing pavement design and construction thickness and material type of each layer available subgrade soil information 2. Heavy duty pavements are pavements subjected to the extremely heavy wheel loads associated with freight handling vehicles in industrial facilities, such as container terminals and warehouses. Limits for nominal size of asphalt heavy duty dga changed to align with rta r116. Pdf development of a semiflexible heavy duty pavement. An intensive two day short course ideal for engineers and engineering technologists working for federal, state, or local authorities, consultants and contractors. It expands the number of design solutions as compared with the previous three editions by including a. As a guide in achieving this goal, this publication provides adequate designs that will. The previous version of this guide provided instruction that was very comprehensive. The older pavements were of lesser thickness 150 to 200 mm of asphalt but the current long life. Here we will emphasize the recommendations contained in the asphalt pavement design and construction guide, published by flexible pavements of ohio and mention the recommendations of the asphalt institute and the national asphalt pavement association. New flexible and semi flexible heavy duty pavements for severe loading conditions. This paper analyses the possibility of using altered aggregates and reclaimed asphalt pavement rap in cold mix asphalt used to produce grouted macadam pavements in comparison with the conventional hot mix porous asphalt skeleton. Hipave heavy industrial pavement design is software for design of flexible pavements in facilities such as intermodal container terminals and yards hipave models the extremely heavy loads from vehicles such as mast lifts, reachstackers, straddle carriers etc.
Heavy duty pavements centre for pavement engineering education. He is author of all four editions of these manuals. Pavement for heavy truck use pavement for a facility are expected to have full ohio legal loads. Athwld, and onedirection cumulative esals for both flexible and rigid pavement design. Aashto method, asphalt institute method, atj 585 revised 20 topic 2 rigid pavement design. Although different nomenclatures are used by various jurisdictions and authorities, the following terms are used in this unit. Pavement design manual txdot pavement design training. Fps21 modulus inputs and backcalculation methodology. Introduction to geotechnical issues in pavement design. The heavy duty industrial pavement design guide has been developed for users of the hipave software. The objective of this manual is to provide a pavement design engineer with. For heavy duty lots, the newer standard specifies four inches of asphalt over 12 inches of base vs. Asphalt overlay of flexible pavement overlay thickness determination summary of design steps 1.
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