I am looking for advice on design methods for heavy duty pavement over weak, compressible subgrade conditions. 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. This method is mainly based on the spanish guidelines for the. There are numerous cases where measured deflections have decreased over time because of age hardening of the asphalt layers. Experience in heavyduty pavement design has shown that 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. Limits for nominal size of asphalt heavy duty dga changed to align with rta r116. Standard specification for urban infrastructure works 47 edition 1, revision 02 oct 2010. A request for a traffic study should include the following information. The principles of pavement design for flexible, rigid and block pavements are described. United kingdom uk pavement design the uk has been building heavy duty asphalt flexible pavements since the 1950s.
Apr 02, 2009 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. The newer standard specifies 5inch of concrete with no subbase. The main emphasis in this thesis will be on heavy duty pavements for ports. There are numerous cases where measured deflections have decreased over time because of. 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. 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. Pavement design criteria for heavyload vehicles transportation. Athwld, and onedirection cumulative esals for both flexible and rigid pavement design. Roadway design florida department of transportation home. Fps21 modulus inputs and backcalculation methodology.
The asphalt institute in college park, maryland has issued a asphalt thickness and design, manual that suggests that asphalt. Heavy duty pavement design flexible over soft subgrade. The faa adopted these methodologies to address the impact of new landing gear configurations and increased pavement load conditions. 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. The structural design of heavy duty pavements icpi. The heavy duty industrial pavement design guide has been developed for users of the hipave software. These recommendations are based on a recent inhouse study of the selection between flexible and rigid pavements with particular focus on local conditions. He is author of all four editions of these manuals. The older pavements were of lesser thickness 150 to 200 mm of asphalt but the current long life. Material selection, mixture design, structural design, and construction practices are important for the efficient design of heavy duty asphalt mixtures and pavements. Heavy duty pavement design container terminals hipave. Pavements and surface materials page 2 slabs and paver stone embedded in reinforced concrete are examples of rigid pavement. 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.
For heavy duty lots, the newer standard specifies four inches of asphalt over 12 inches of base vs. The manual has a 30year pedigree and is regarded as the benchmark by which other heavy duty pavement design. Due to the likelihood of ongoing differential set heavy duty pavement design flexible over soft subgrade geotechnical engineering general discussion engtips. 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 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. 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. This is an introduction to flexible pavement design for engineers. Heavy duty pavements are pavements subjected to the extremely heavy wheel loads associated with freight handling vehicles in industrial facilities. 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 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. Introduction to geotechnical issues in pavement design course no. 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.
The fourth edition represents a significant step forward in the design of heavyduty pavements, i. Further summary statistics are provided for the percent trucks in terms of percent medium duty and heavy duty. Engineers are cautioned that much of pavement design is governed by codes, specifications and practices of public agencies. Engineers must always determine the requirements of the. The guide is a collaborative effort currently involving dr. Flexible pavement design is based on the concept of structural number. 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 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. Rdgn042 pavement design for carriageway construction page 6 of 42 flexible and rigid pavements as well as some overriding factors to be noted. Pdf development of a semiflexible heavy duty pavement. 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. Mar 19, 2007 hipave heavy duty pavement design workshop revised may 2009 main presentation one slide per page. A radically new way of analysing pavements is incorporated in the design method. Structural layer coefficients ai are required for flexible pavement design. The design guides for ports are here divided into two categories, chart based design and program based design. Leigh wardle of mincad systems, ian rickards pioneer road services pty ltd, melbourne, australia, john lancaster vicroads, australia and dr. Design considerations for interlocking concrete pavements. In addition, a realistic assessment of cur rent and future truck loadings is essential to achieve. Pavement for heavy truck use pavement for a facility are expected to have full ohio legal loads. It expands the number of design solutions as compared with the previous three editions by including a. Introduction to flexible pavement design ced engineering.
The fourth edition of this manual is available from interpave on. Elastic design of flexible and rigid pavements in a pavement design for airfields from the united states army corps of engineering. Catalogs of pavement designs flexible pavements of ohio. Materials investigation and selection information 1. Traffic the design procedure separates traffic into six classes i through vi. British ports association heavy duty pavement manual samt hipave som ar en. This article presents the 1993 aashto guide basic design equation for flexible pavements. Hipavea tool to assist in the mechanistic empirical design of heavy duty industrial flexible pavements, 10th. An intensive two day short course ideal for engineers and engineering technologists working for federal, state, or local authorities, consultants and contractors. It is not intended as definitive treatise, and it does not encompass the design of rigid pavements. Aashto method of flexible pavement design free download as powerpoint presentation. Determine existing pavement design and construction thickness and material type of each layer available subgrade soil information 2.
Although different nomenclatures are used by various jurisdictions and authorities, the following terms are used in this unit. Base material shall be manufactured from hard, durable stone or recycled building materials free of clay lumps, organic matter and other deleterious substances. 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. March 2015 flexible pavement design manual march 2015 implementation memo flexible pavement design manual. Rdgn042 pavement design for carriageway construction page 1 of 42 contents page 1. Hipave a tool to assist in the mechanistic empirical design of heavy duty industrial flexible pavements wardle, l. Aashto method of flexible pavement design road surface. There are various pavement design recommendations in different publications from credible sources. New flexible and semi flexible heavy duty pavements for severe loading conditions. Flexible vehicular brick paving whitacre greer pavers. Standard pavement designs and mix types catalogs of designs generic guidance on thickness, mix types and.
Pavement design manual txdot pavement design training. Traffic analysis predicted future 18kip esals in the design lane over the design period overlay design. For jointed concrete pavements, regardless of whether reinforced or nonreinforced, the aashtoodot method of pavement design calculates the same. Design and performance of heavy duty asphalt pavements. In order to use the tables, appropriate traffic and subgrade classes must be selected as follows. Although the principles can be applied to various types of heavy duty pavements, this guide is primarily directed at port and container terminal pavements. Heavy duty industrial pavement design guide pavement science. Caltrans context for heavy duty pavement design old pavement concrete pavement, urban highvolume freeways, 30 50 years old 23 asphalt surfaced. Concrete pavement design, construction, and performance.
As a guide in achieving this goal, this publication provides adequate designs that will. 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. Conventional flexible pavement design and construction methods have been easily. 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. The previous version of this guide provided instruction that was very comprehensive. 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.
Jun 28, 2018 for heavy duty lots, the newer standard specifies four inches of asphalt over 12 inches of base vs. 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. Using traditional design methodologies, standard duty concrete lots required 7inch of concrete over a 6in subbase. This is the third edition of the british ports association heavy duty pavement design manual for second edition see irrd 819578. 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. Heavy duty pavements centre for pavement engineering education. In other situations where this form of construction may be advantageous e. Information in this guide is based on research and development carried out around the world. Aashto method, asphalt institute method, atj 585 revised 20 topic 2 rigid pavement design. Design procedure tables 41 thr ough 45 can be used dir ectly to select design thicknesses fr om the design input factors. Pavement design of pavement design, including design considerations, covers many aspects estimating design traffic, pavement investigation and design processes, structural capacity estimation, and software available for pavement design. Road pavement design guide home kent county council. Introduction to geotechnical issues in pavement design.
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