Rdgn042 pavement design for carriageway construction page 7 of 42 pavement type for different sections andor different lanes on the same road. Introduction to rigid pavement design cedengineering. Ac 15053206f, airport pavement design and evaluations. The rigid pavement has rigidity and high modulus of. Rigid pavement design example proposed revision to aashto guide appendix 1 a jointed concrete pavement is to be designed to carry 10 million esals and the pavement is located in the southeastern united states. General design inputs design reliability 90 percent overall standard deviation, so 0. The design of rigid pavement is based on providing a structural cement concrete slab of sufficient strength to resists the loads from traffic. 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.
Date 2019 rigid pavement design manual rpdm 110118 2018 rigid pavement design manual rpdm. The design of rigid pavements by the westergaard method is still commonly used today for rigid pavements loaded by nonhighway vehicles. A rigid pavement is constructed from cement concrete or reinforced concrete slabs. Rigid pavement design of pavements lec14 part1 youtube. Jointed plain concrete pavement jpcp continuously reinforced concrete pavement crcp pavement design. Poor subgradesubbase preparation can not be overcome with thickness. In simple applications on real projects the information provided will give designers a good start in addressing subgrades, select materials and subbase courses, base courses and pavement design for rigid pavements for streets, roads and parking. A surface layer, made up of slabs of portland cement concrete pcc, sits on top of a handful of sublayers. Properties of rigid pavements components of rigid pavements created by aman dembla help the. Example design size and spacing of dowel bars at an expansion joint of concrete pavement of thickness 25 cm. Ufc design method calculate the frost penetration depth for flexible and rigidconcrete pavement. This lecture includes following topics design of rigid pavements what are rigid pavements. Pcapav for damage analysis of pcc pavements based on the pca design method.
This test method should not be used if the soil contains particles that are easily broken under the blow of the tamper unless the field method of compaction will. Rigid pavement design aashto road surface youngs modulus. Introduction to rigid pavement design ced engineering. It is not intended as definitive treatise, and it does not encompass the design of rigid pavements. For help on the use of this excel tool, you can download its instruction text file. It clarifies when state pavement design procedures may be used and when pavementtransportation computer assisted structural engineering pcase is required. There are many different types of empirical equations available today but this section will present the 1993 aashto guide basic design equation for rigid pavements as an example. Any concrete pavement, built of any thickness, will have problems on a poorly designed and constructed subgrade or subbase. There are three basic types of rigid pavement commonly used worldwide. The method of design allows use of conventional as well as stabilized materials in any layer of the pavement, and thickness of each layer is taken from the templates given in indian roads congress irc design code. Work can be verified by using the flexible pavement structural design utility. They are provided along with longitudinal directions. Design period or design life of a pavement is the period of time for which the initially. The purpose of the expansion joint is to allow expansion of concrete during rising in temperature with respect to construction temperature.
It estimates the support of the layers below a rigid pavement surface course the pcc slab. Design methods ability to consider factors that affect rigid pavements. January 2005 implementation memo flexible pavement design manual. Graph example output rutting total ac base subgrade verify against design criterion specified by agency. Rigid pavement is designed and analyzed by using the elastic theory. Streetpave 12 is the latest in jointed plain concrete pavement thickness design. 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. It is a basic treatment that will introduce designers to some important principles and terminology. Types of pavements flexible pavement rigid pavement. April 27, 2009 mndot pavement design examples example no. Critical condition of stress in the rigid pavement is the maximum flexural stress occurring in the slab due to wheel load and the temperature changes. An introduction to rigid pavement design a pdh online.
Can use load spectra instead of esals computationally intensive. Called rigid since pccs high modulus of elasticity does not allow them to flex appreciably. Westergaard considered the rigid pavement slab as a thin elastic plate resting on soil. This is an introduction to flexible pavement design for engineers. Ufc 325001 pavement design for roads and parking areas.
Subbase thickness10 subbase modulus30,000 psi subgrade mr10,000 psi. This revision provides pavement design procedures and requirements for the pavement design of roads and parking areas worldwide. The westergaard method for rigid pavement design involves a calculation of the stresses acting in the pavement under the wheel load. For jointed concrete pavements, regardless of whether reinforced or nonreinforced, the aashtoodot method of pavement design calculates the same. Included all pavement design in chapter 3, including previous guidance on pavement design for airplanes weighing less than 30,000 pounds 610 kg. The course will give you the basic terminology and technical considerations needed to help you address rigid pavement design issues on specific projects.
Design size and spacing of dowel bars at an expansion joint of. In simple applications on real projects the information provided will give designers a good start in addressing subgrades, select materials and subbase courses, base courses and pavement design. This course is intended for engineers, architects and construction professionals who want an introduction to rigid pavement design for streets, roads and parking areas. 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. Truck distribution for multiplelane controlledaccess. The layer directly under the pcc is more flexible than the concrete, but still quite rigid. Rigid pavement analysis and design fhwa us department of.
In this video, you will know how to design a rigid pavement using aashto method and curves to make you available to develop structure. The rigid pavements are made of cement concrete either plan, reinforced or prestressed concrete. Engineers must always determine the requirements of the. Proper design and construction are absolutely necessary if the pavement is to perform. Load capacity of the dowel system is 40 percent of design wheel load. Rigid pavement design term paper example topics and well. This pressure deformation characteristics of rigid pavement lead westergaard to the define the term radius of relative stiffness l in cm is given by the equation 1. Design, analysis, and rehabilitation for windows is a computerized pavement design tool based on the aashto 1993 design guide of pavement structures. The chosen design has 6 inches of sandmix asphalt wearing surface, 9 inches of soilcement base, and 10 inches of crushed stone subbase. Westergaard method for rigid pavement design spreadsheet. Section 5 rigid pavement construction standard specification for urban infrastructure works 51 edition 1, revision 0 september 2002 contents 5 rigid pavement construction 53 5. Rigid pavement empirical design example pavement interactive. The thickness design of cpcd is detailed in section 2, approved design method, and section 4, rigid pavement. Engineers are cautioned that much of pavement design is governed by codes, specifications and practices of public agencies.
Different pavement types use different types of joints and reinforcement to control the forces acting on the concrete pavement. Pavement design is governed by a number of considerationsfactors, as given below. Flexible pavement empirical design example pavement. Design of rigid pavement using aashto method youtube. Rigid pavements are designed for a period of 3040 years and thickness design of rigid pavements are influenced by traffic loading. Design a new flexible pavement for a major interstate highway using the following conditions four lanes each direction. Design size and spacing of dowel bars at an expansion joint of concrete pavement of thickness 25 cm. In this video, you will know how to design a rigid pavement using aashto method and curves to make you available to develop structure pavement. Types of pavement flexible pavements and rigid pavements. Grouted concrete roads are in the category of semirigid pavements. Joints in rigid pavement transportation engineering. Design, types, flexible and rigid pavement, notes and functions. Subbase thickness10 subbase modulus30,000 psi subgrade m r10,000 psi to get k.
Defined regular use for pavement design as at least 250 annual departures, which is equivalent to 500 annual operations. Design a new rigid pavement for a major interstate highway using the following conditions four lanes each direction. As a general guide, factors elaborated in section 3. Newly added with this version is jointed plain concrete overlay designs for all six types bonded on ashpalt, unbonded on asphalt, bonded on concrete, unbonded on concrete, bonded on composite, unbonded on compsosite.
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