Design a new flexible pavement for a major interstate highway using the following conditions four lanes each direction. Now, use the thickness goal seek function and select the layer 1 option to obtain hma layer thickness such that one of the design lives reaches 20 years. Materials lab pavement research pavement research is conducted to keep current with pavement issues in the areas of asphalt, concrete, pavement construction, pavement evaluation, pavement smoothness, and traffic. In view of the considerable scope of the project, it was planned in several phases, starting with an. A knowledge based structural design method for pavements. Systems approach to the flexible pavement design problem. As a general guide, factors elaborated in section 3. Pavement analysis and design pdf the kenlayer program for flexible pavements can be applied to a multilayered system under stationary or moving multiple wheel loads with each layer being linear elastic. Report all test data necessary to each method of design on the soils evaluation for flexible pavement, form itd808 figures 510.
Rigid pavement empirical design example pavement interactive. Example design size and spacing of dowel bars at an expansion joint of concrete pavement of thickness 25 cm. Flexible pavement empirical design example pavement. Work can be verified by using the structural design utility. It estimates the support of the layers below a rigid pavement surface course the pcc slab. Adequate coefficient of friction to prevent skidding of vehicles, impervious surface, so that subgrade soil is well protected, and long design life with low maintenance cost. A project report on design of a flexible pavement for an existing colony. How lidar is being used to help with natural disaster mapping and management.
Local government pavement design some agencies standard cross sections and materials little or no construction inspection particularly compaction no money for testing and analysis other agencies design for particular traffic, environment, soils good construction inspection. This project will consist of the construction of a new flexible pavement to extend route 123 to intersect with route i80 in north jersey. Proper design and construction are absolutely necessary if the pavement is to perform. Pdf airfield pavement design for a major airport using. Introduction to flexible pavement design cedengineering. New flexible pavement design example 1993 aashto pavement design project name and location. Design three types of highways, all main roads but with different traffic loads. Both the historical background to present practice and the engineering principles involved in pavement design are presented so. Design the length and spacing of tie bars given that the pavement thickness is 20cm and width of the road is 7m with one longitudinal joint. In the south african structures, the bearing capacity of the pavement is provided by the unbound.
This manual provides guidance on utilizing aashtos software package pavement me design, version 2. However, reorganizational changes have resulted in a decision to issue this guidance as a standalone document under the title of adot pavement design manual. Ac 15053206f, airport pavement design and evaluations, 10. By looking at several different design periods and reliability levels this example gives an idea of the relative influence of these inputs. The base layer shall be asphalt, asphalt treated material or crushed gravel or rock.
In order to shorten the report for the convenience of the design engiluer, to whom it is addressed, practically all supporting data and documentation have been excluded. The following three types of pavement distress resulting from repeated application of traffic are considered. Flexible pavement empirical design example pavement interactive. This course is ideal for those involved in the design and construction of roads and pavements where heavier traffic and loads may be encountered. Requirements of a pavement an ideal pavement should meet the following requirements. Design of flexible pavement eswl equivalent single wheel load highway lec24 gate duration. Can use load spectra instead of esals computationally intensive. An introduction to rigid pavement design guyer partners. Cut across the e sb cut across m r to the tl vertically meet other line read kvalue k600pci topic 10 aashto rigid pavement design figure 12.
Dec 03, 2017 design of flexible pavement eswl equivalent single wheel load highway lec24 gate duration. Pdf a project report on design of a flexible pavement. This project will consist of the construction of a flexible overlay of an existing flexible pavement to extend route 123 to intersect with route i80 in north jersey. Mdt currently uses a pavement design method based upon the 1993 guide and darwin software, with adjustments made based upon mdts past experience and pavement materials. Any concrete pavement, built of any thickness, will have problems on a poorly designed and constructed subgrade or subbase.
Design a new flexible pavement for a major interstate highway using the following conditions four lanes each. April 27, 2009 mndot pavement design examples the following examples are intended to demonstrate the procedures used to design the options required by technical memo no. Previously, guidance for pavement design activities was included in the materials preliminary engineering and design manual. In some of these design examples the design rvalue average minus one standard deviation of the nativeinplace soil is adjusted to reflect. Jointed plain concrete pavement jpcp continuously reinforced concrete pavement crcp pavement design. When a flexible pavement is subjected loading, the stress is maximum at the top layer of pavement. In the south african structures, the bearing capacity of the pavement is provided by the unbound base and subbase structure i or by the unbound base and cement treated subbase structure ii.
Defined regular use for pavement design as at least 250 annual departures, which is equivalent to 500 annual operations. It is not possible to formulate one set of design criteria that could meet the requirements of every road everywhere. Calculate the effective modulus of subgrade reaction k this calculation is a multistep process in the 1993 aashto guide for design of pavement structures. In addition to several input and graphics programs, kenpave consists of two wellknown computer programs for pavement analysis and design. The unit weight of concrete is 2400, the coefficient of friction is 1.
Flexible pavement design by semiempirical method is discussed in this article. Pavement analysis and design pdf download free ebooks. Nddot implementation of aashto flexible pavement design. Design lives may range from 30 to more than 60 years and can be accomplished using both asphalt and concrete. This two day short course ideal for engineers and engineering technologists working for federal, state, or local authorities, consultants and contractors. Paul guyer is a registered civil engineer, mechanical engineer, fire protection engineer, and architect with over 35 years experience in the design of buildings and related infrastructure. An ideal pavement should meet the following requirements. Load capacity of the dowel system is 40 percent of design wheel load. Sample sustainable pavement design strategies references. The engineering design of flexible pavement structures is not an exact science. Today, the pavement design industry is slowly migrating to me pavement design. Longer life pavements can be achieved as a policy objective in new, rehabilitated, and reconstructed pavements and are generally justified for higher volume facilities. An introduction to asphalt pavement design in the uk.
Flexible overlay pavement design example 1993 aashto. Work can be verified by using the flexible pavement structural design utility. Pavement mix design system the final product of this track will be a practical yet innovative concrete mix design procedure with new equipment, consensus target values, common laboratory procedures, and full integration with both structural design and field quality control a lab of the future. Aashto load equivalency factors for rigid pavements based on terminal serviceability index of 2. Types of pavements flexible pavements and rigid pavements. Called flexible since the total pavement structure bends or flexes to accommodate traffic loads. Surface shall be hot mix asphalt or asphalt treated material.
This page contains pavement design seminar and ppt with pdf report. Sample sustainable pavement design strategies longer life pavement. Pdf a project report on design of a flexible pavement for. Paul guyer is a registered civil engineer, mechanical engineer, fire protection engineer, and architect with over 35 years experience in the design of buildings and related. Flexible pavement can be defined as the one consisting of a mixture of asphaltic or bituminous material and aggregates placed on a bed of compacted granular material of appropriate quality in layers over the subgrade. New flexible pavement design example 1993 aashto pavement.
Subbase thickness10 subbase modulus30,000 psi subgrade m r10,000 psi to get k. Traffic conditions, climate, geology, materials, construction, and economics are variables that demand the fullest application of professional. Pavement design with examples complete data civildigital. Design a new for a major interstate highway using the following conditions four lanes each direction. Cee 3604 transportation engineering pavement design. Pavement design is primarily a matter of sound application of acceptable engineering criteria and standards. A design procedure is presented for three types of flexible pavement. Flexible overlay pavement design example 1993 aashto pavement design project name and location. The roads shall all be designed on the same subgrade. Design examples 2 mnpave gives a fatigue design life of 36 years and rutting life of 30 years. Guide for design of pavement structures 1993 guide aashto, 1993. This stress transmits to another layer by point to point contact. Examples of the calculation of design esals are provided in figures 3021 and 4021. Which is defined as the pressure per unit deflection of the foundations as determined by plate load test the modulus of subgrade reaction k is used as a primary input for rigid pavement design.
Lecture notes ct 4860 structural pavement design design of. Engineering consultants are responsible for the surfacing strategy and detailed structural pavement design on roadway design project assignments. Since the pavement design life is 20 years, this design is conservative. 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.
Poor subgradesubbase preparation can not be overcome with thickness. Different pavement types use different types of joints and reinforcement to control the forces acting on the concrete pavement. Rdgn042 pavement design for carriageway construction page 7 of 42 pavement type for different sections andor different lanes on the same road. 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. Dec 14, 2017 in this video, you will know how to design a flexible pavement with examples using aashto method and curves to make you available to develop structure paveme. Pavement design manual section 1 introduction page 1 1 introduction 1. This project will consist of the construction of a new flexible pavement to extend route.
The site is a small commercial facility that hosts receptions and social events and therefore has a large number of parking spaces. Design period is 20 years, 2 lane roads, axel load 10 tons. Concrete bridge piers and footing details free drawing. Water bound macadam roads and stabilized soil roads with or without asphaltic toppings are examples of flexible pavements. Included all pavement design in chapter 3, including previous guidance on pavement design for airplanes weighing less than 30,000 pounds 610 kg. The pavement design manual is published by alberta transportation and. These represent nearly all flexible pavements being constructed. Improper design of pavements leads to early failure of pavements a ffecting the riding quality.
Flexible overlay pavement design example 1993 aashto pavement. A new four lane divided highway is to be constructed on a subgrade of cbr 1. Introduction to rigid pavement design ced engineering. Alaska flexible pavement design manual 12 effective 40104 effective 40104 alaska flexible pavement design manual the excess fines design method and the mechanistic design method. Pavement design illinois department of transportation. While the standards contained in this manual provide a basis for uniform design practice for typical pavement design situations, precise rules which would apply to all possible situations are impossible to give. Lecture notes on the design of flexible pavements eapa. A rural twolane collector highway containing 6 ft 1. Design of flexible pavement using aashto method youtube. Some examples of what is considered to be a flexible pavement are given in figure 1. Pavement branch pavement design off the national highway system county franklin item xxxxxx. Xx description example pavement design current adt.