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selection placement mixing and compaction of materials so that the completed base course is uniform and conforms to plan dimensions and other acceptance requirements Quality assurance requirements shall be as specified in the latest edition of the Department's publication entitled Application of Get price


Subgrades Subbases for Concrete Slabs

The base course material according to ACI 302 Concrete Floor and Slab Construction should be compactible easy to trim granular fill that will remain stable and support construction traffic ACI 302 recommends material with 10 to 30% fines (passing the No 100 sieve) with no clay silt or organic materials Get price


Standard Specifications for Road and Bridge Construction

requirements and covenants applicable to all highway construction improvements as well as provisions relating to materials equipment and construction requirements for individual items of work (as defined in the book) on road and bridge construction projects awarded by the department The book provides detailed requirements on such subjects as a Get price



The variety of satisfactory materials is too wide to set a rational standard specification and custom written specifications must be used that match the design of each individual project These notes set out the recommended format of the sub-base specification and minimum requirements Get price



Plasticity Subbase and aggregate base materials shall be either non-plastic (PI=0) or shall conform to the requirements of Table II-11 of the Specifications when tested in accordance with VTM-7 If the material is classified as non-plastic (PI=0) in accordance with VTM-7 the Liquid Limit requirement Get price


for Lower Volume Local Roads

The New Products Evaluation Program for Lower Volume Local Roads and municipal requirements are bound by all applicable sections of Publication 408 In order to use a Product or Process in Publication 447 an approved MS-329 Project Approval Form is required Contact your District Municipal Services Representative when you have aGet price


Typical Road Structure Cross Section

It acts as a separating layer b/w subgrade and road base By this it prevent the two layers from mixing up b Characteristics of materials used in Sub Base The subgrade material should be clean and free from organic matter and should be able to be compacted by roller to form stable sub-base The material should have following characteristic Get price


Section III Surface Gravel

good surface material for a gravel road would need more material passing a #200 sieve than a good base material There is also a difference in the need for plastic or cohesive material Surface gravel needs some good natural clay which gives a "binding characteristic " The chart adjacent is an example of one state's base and gravel Get price



- No single piece of mulched material shall be longer than 0 5 m and shall not exceed 0 07 m in diameter Exceptions to this requirement may be considered by the Consultant for large diameter woody materials which upon mechanical manipulation show evidence of debarking but resist break-up into a size of less than 0 07 m in diameter Get price


Specification for Supply of Recycled Material

8 Specification for Supply of Recycled Material for Pavements Earthworks and Drainage 2010 5 The Specification The Specification contained in Part B has been compiled for four main material types namely -Road Base Class R1 Class R2 Suitable for use on roads with a traffic loading of greater than 1x106 ESA MaterialGet price


Pavement Manual Treated Subgrade and Base Courses

Proper design and application of materials with additives will minimize premature failures of the material and pavement structure Base and subgrade materials are treated with chemical additives to achieve one or more goals when available materials do not meet project-specific requirements Get price


Introduction to roadbase products and testing

"sub-base' material and as a "base" material which when specified requirements of a given road authority specification Some quarries may use batch cards as a means of clearly communicating the required aggregate mix proportions for a specific roadbase blend Get price


Standard Specifications for Road and Bridge Construction

the Standard Specifications for Road and Bridge Construction 4 GUIDELINES FOR IMPLEMENTATION The book outlines the general requirements and covenants applicable to all highway construction improvements as well as provisions relating to materials equipment and construction requirements for individual items of work (asGet price


Crushed Aggregate in FloridaTranscor Recycling

The road base can be used for top base and stabilizing sub base for roadways and foundations In order for road base to perform as intended it must meet certain physical requirements such as proper gradation and the durability to resist the effects of weathering Transcor processes this material into high quality aggregate base materials Get price


TM 5

may consist of base and subbase material provided the top 6 inches meet the gradation requirements of paragraph 8 6 Design CBR for select materials and subbases Design CBR values and materials requirements for select materials and subbases are to be selected in accordance with TM 5-825-2 except as modified in table 4 5Get price



Recycled roadway materials are typically generated and reused at the same construction site providing increased savings in both money and time It has been speculated that in some municipalities recycled materials costs less to use than conventional crushed-stone base material by as much as 30% Get price


Using recycled materials for pavements earthworks and

Using recycled materials for pavements earthworks and drainage road base material suitable for a range of traffic councils and contractors about the supply of high quality recycling materials including legal requirements for the recovery and re-use of construction materials and guidelines for placement of materials to meet design Get price


5 Aggregate Specifications and Requirements

and Requirements Physical Quality Requirements Fine Aggregates Coarse Aggregates Physical Quality Tests Coarse Aggregates B Borrow and Structure Backfill Riprap Aggregate Base Subbase Aggregate Pavement or Shoulders Summary of Gradation Requirements 5-1 5 CHAPTER FIVE AGGREGATES SPECIFICATIONS and REQUIREMENTS material but not Get price


Colorado Landscaping Materials

Welcome to Colorado Materials Inc [CMI] We're a family-owned operated landscape supply company proudly serving Colorado since 1999 At CMI we maintain an extensive product line to assist developers architects landscape contractors and home owners with custom projects Get price


Road Aggregate 101 Important Stuff

Road Aggregate 101 Important Stuff 3 – Unwanted Junk – Maximum allowable amount by weight of undesirable material for road related purposes 1 2 Road Aggregate 101 Properties of Type/Quality PennDOT Aggregate Types A B C 3 Also used as road base and sub-base Get price



703 05 Subbase Base and Surface Course Aggregate Division 700 contains the material requirements for Divisions 150 through 600 Comply with legal load restrictions when hauling material and equipment on public roads and bridges to and from the project Get price


Evaluation of Crushed Concrete Base Strength

Evaluation of Crushed Concrete Base Strength Prepared for Mississippi Department of Transportation State Study No 238 Project No SPR-1(59) 106002 160000 Prepared by L Allen Cooley Jr Ph D Howard Hornsby EIT BURNS COOLEY DENNIS INC GEOTECHNICAL AND MATERIALS ENGINEERING CONSULTANTSGet price


Base Aggregate Calculator

Then click on either Base Rock Drain Rock or a Custom Density material selection The Base Rock and Drain Rock selections will supply a default density of the rock the Custom selection requires an entry for rock density in the Density field Finally click on the Calculate button The calculated number of tons of aggregate will be returned Get price


R40 P avement Base and Subbase Dat e July 2014 Editi on 1

Clause 2 Requiring Base A material to have a minimum CBR of • properties of materials used as unsealed road and unsealed shoulders wearing surface o test data which demonstrate that the material satisfies the relevant requirements of this specificationGet price


What materials are used for road construction?

Road consist of basically 4 layers 1 Sub-grade The sub-grade material should be clean and free from organic matter and should be able to be compacted by roller to form stable sub-base The material should have the following characteristics * Get price


Road Construction

Road Construction 1 PRESENTED BY - MOHD DANISH (1100100056) AT BHEL RANIPUR GRANULAR SUB BASE MATERIAL LAYERS DEPTH COMPACTION 10 Sub Base Layer 11 It is a road base material consisting of crushed rock/slag usually premixed with controlled amount of water sufficient for adequate compaction 12 BITUMINOUS MACADAM Get price


Item 247 Flexible Base

Item 247 Flexible Base 1 DESCRIPTION Construct a foundation course composed of flexible base 2 MATERIALS Furnish uncontaminated materials of uniform quality that meet the requirements of the plans and specifications Notify the Engineer of the proposed material sources and of changes to material sources TheGet price


Pavement Design Guide for Subdivision and Secondary Roads

Pavement Design Guide for Subdivision and Secondary Roads In ia A companion reference to the Subdivision Street Requirements 2 0 0 0 Prepared by Materials Division ia Transportation Research Council And Secondary Roads Division We Keep ia Moving First Printing ~ October 1973 Revised March 1993 Revised January1996Get price


Application Description

The gradation requirements vary with type (base or subbase) Granular base materials typically contain a crushed stone content in excess of 50 percent of the coarse aggregate particles Cubical particles are desirable with a limited amount of flat or thin and elongated particles Get price


Paving Expert

Table 1 Requirements for Sub-base and recommended thicknesses How deep should my sub-base be? Generally a flexible sub-base of unbound material needs to be at least 100mm deep as does a bound sub-base of CBM/HBM For bitumen-bound material then 50mm is a typical minimum thickness Get price



SECTION 3 01 MATERIALS FOR SUB-BASE AND BASE COURSES 3 01 01 SCOPE A This section covers the requirements for the characteristics source supply and storage of sub base and base course pavement materials B Materials specified for use in the construction of sub-base and base courses for flexible and rigid pavements include the following Get price


Standard Specifications for Road and Bridge Construction

Road and Bridge Construction The department gratefully acknowledges the principal authors from the Construction Office and the valuable review and input from WYDOT's Bridge Geology Highway Development Contracts Estimates Environmental Services Maintenance Traffic Materials and District Construction and Maintenance programs theGet price



BASE CONSTRUCTION GUIDELINES These specifications are intended as a GUIDE ONLY for the design and construction of a "Dynamic Base" used in conjunction with Sportexe synthetic turf systems Product specification values are nominal the information presented is subject to change without notice Get price



PART D - SUBBASE AND BASE COURSE ITEMS OF WORK MINIMUM TEST REQUIREMENTS Item 202 - Crush Aggregate Base Course Same tests as for Item 201 For every 1500 cu m or fraction thereof 1-F Fractured Face Item 203 - Lime Stabilized Road Mix Base Course Amount of Lime to be added Get price


Materials testing manual (Department of Transport and

The Material testing manual is a collection of test methods for materials supplied to the Department in Road Construction The Materials Testing Manual (MTM) provides methods for sampling and testing of soils aggregates rocks bituminous materials asphalt concrete and pavements Get price

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