The sub-base and the base layer can be unbound (e.g. granular) or chemical stabilized with stabili zers such as cement, lime, fly ash and ot her cementitious stabilizers.
(c) achieve conformity within the specified tolerances stated in Clause 5. Compact uniformly each layer of asphalt to achieve insitu air voids requirements before placing the next layer. 3.4.2 Equipment and Method . Place the asphalt using a self-propelled paver with the ability to be operated with automatic grade
This Specification "Pavement Quality Concrete for Airfields" has been devised for use of the Crown and of its Contractors in the execution of contracts for the Crown and, subject to the Unfair Contracts Terms Act 1977, the Crown will not be liable in any way whatever (including but
research on bridge deck waterproofing IAN 96/07 Page 4 of 12 Aug 07 Rev 1 2. Improving Surfacing Performance 2.1 Introduction BD 47/99 requires waterproofing systems on concrete bridge decks to be overlaid with a 20mm thick sand asphalt protection layer and binder and surface courses so that the total thickness of the three layers is 120mm.
In addition to the obligation under sub-clause 13(1) and commencing on the Effective Date, the Contractor shall for the purposes of section 11of the Act contribute or hold to the order of the Ministry a minimum of:
This publication is based on the results of R27-124, Evaluation of Aggregate Subgrade Materials Used as Pavement Subgrade/Granular Subbase . R27 - 124 was conducted in cooperation with the
e) Delivery of the dense graded asphalt to the Works; f) Being a registered asphalt paving organisation or engaging a registered asphalt paving organisation; g) Laying, compacting and finishing any corrector layer; h) Laying, compacting and finishing the production asphalt; i) Protection of the compacted asphalt layer from moisture ingress;
3.6.1 Layer thicknesses. The total thickness of asphalt on bridges may range from less than 60 mm to over 120 mm, but a minimum thickness of 120 mm is recommended. Thicknesses less than 60 mm on concrete bridges are a special case and not covered by the recommendations in this Guide.
Central Public Works Department Analysis of Rates for Delhi is a very comprehensive and useful document forming basis for the rates of various items. It is based on scientific assessment of Inputs of materials, labour and
WHERRY SCHOOL NORWICH: LANDSCAPE SPECIFICATION wwa_1606_DOC_603 T00 Prepared for: The ... Q22 Asphalt roads/ pavings 5 Q28 Topsoil and soil ameliorants 8 Q30 Seeding/turfing 12 Q31 External planting 15 Q40 Fencing 20 Q50 Site/street furniture/equipment 23. Q10 Kerbs ... Class CEM I 42.5 to BS EN 197-1. - Sand: to BS EN 12620, grade 0 ...
4.2 Unless Sub-clause "Thin Overlays – Dependence on Underlying Layers" or Sub-clause “Exclusions” (below) apply, the mean IRI & NAASRA roughness for each 100 m section of wearing course shall not exceed the maximum values specified in the Table RD-BP-D4 4-1.
6.3 This Sub-clause only applies where an asphalt overlay is to be placed to specified design levels on an existing pavement. 6.4 The existing pavement shall be surveyed. For each layer, the required thickness of asphalt shall be written on the existing surface at each point where there is a specified level.
2018/03/01 · The Contractor agrees to insert this clause in all subcontracts subject to the Service Contract Labor Standards statute. 252.225-7016 Restriction on Acquisition of Ball and Roller Bearings (f) The Contractor shall insert the
The strength and durability of a concrete driveway are not only determined by the type of concrete mix but also by base or sub-base over which it's poured. A layer of gravel placed between the ...
The Physical Layer Signaling (PLS) component of the Physical Layer provides an interface to the MAC sub-layer for the serial transmission of bits onto the physical media. For completeness, in the operational description that follows some of these functions are included as descriptive material. The concise specifica-
Series 3000 Earthworks and Pavement Layers of Gravel or Crushed Stone Series 4000 Bituminous Layers and Seals Series 5000 Ancillary Roadworks Series 6000 Structures Series 7000 Tolerances, Testing and Quality Control Appendices: Appendix 1 Summary of Pay Items Appendix 2 List of Clauses Referring to the Special Specifications or Drawings
We are the UK's leading supplier of aggregates and asphalt with over 2,000 dedicated employees, over 70 dedicates asphalt plant nationwide, over 100 quarries, 70 recycling operations and much more.
pavement layer was investigated under static and dynamic load. 2. Development of the numerical model A typical reinforced pavement system consists of hot-mix asphalt layer, base course layer, sub-base layer and subgradeas a
down and removed to the depth specified below sub-grade. 7. Intermix large stones, rock, and broken concrete with soil to prevent voids. 8. Ensure that the embankment is placed and com-pacted full width in layers normally not exceeding 8”. 9. Check for compaction and stability by visual obser-vation of subgrade and the embankment under earth
For example, a pavement constructed over a high quality, stiff sub-grade may not need the additional features offered by a sub-base course. In such situations, sub-base course may not be provided. Sub-grade: The top soil or sub-grade is a layer of natural soil prepared to receive the stresses from the layers above.
AASHTOWare Pavement ME User Manual Virginia Department of Transportation Pavement Design and Evaluation Section Central Office, Materials Division September, 2017 Questions or comments should be directed to Affan Habib, P.E., Pavement Program Manager Central Office, Materials Division, Central Office 1401 E. Broad Street, Richmond, VA 23219
An asphalt course comprises one or more layers of a single asphalt type. Asphalt Intermediate Course. Asphalt intermediate course is that part of the asphalt pavement immediately under the wearing course. It rests on the asphalt base course. Asphalt Layer. An asphalt layer comprises a single paving run of uniform asphalt. Asphalt Pavement
tested in accordance with BS 1377: Part 3, Clause 5.3 shall not be deposited within 500 mm, Asphalt concrete wearing course Asphalt concrete base course Road base Sub-base (Type B) Prepared subgrade layer (Fill Material) Formation Level Sub-formation Level Natural Ground (Subgrade Layer)
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Specification (Measurement), MRS32 High Modulus Asphalt (EME2) Transport and Main Roads Specifications, October 2017 2 . Item 42102P Supply and application of grit to the surface of high modulus asphalt (Provisional Quantity, if ordered) Work Operations incorporated in the above item include: a) Work Operations listed in Clause 2.1.5 of MRS01
2.13 Concrete Cube Strength BS1881:Part 116:1983 Tests on Asphalt and Bituminous Materials 3.1 Pre-conditioning of Bitumen Samples Prior to Mixing or Testing NPRA 014 test 14.511 3.2 Density of Bituminous Binders ASTM
2018/10/8 · Each layer of base and sub-base material shall be separately compacted to not less than 95% of its maximum dry density. Density tests shall be carried out as described in Clause …
Clause 4.12.3: Trafficking of Subbase The Contractor is not permitted to commence placing the asphalt base layer until the roller compacted concrete has reached an insitu compressive strength of a minimum of 4 MPa. It is anticipated that grades RCC10 and RCC20 are likely to be used on intersections where time constraints require the use
Asphalt Pavement Thickness and Mix Design While there are an infinite number of questions that can be asked, we compiled a list of those questions that have been directed to us the most. These FAQs are categorized into subject areas listed in the contents dropdown box below.
Aug 14, 2010 · Base and Sub-Base Repair - International Road Federation 1985 - Video VH-5 - Visit the International Road Federation at http://www.irfnews.org/ - Noncommerci...
The sub-base layer shall : a) be constructed by using granular sub-base material or lean concrete; ... Clause 9.31 for sub-base material using virgin material and GS Clause 9.32 for recycled sub-base material in lieu of virgin
SECTION 204 EARTHWORKS. ##This section cross-references Sections 173, 175, 205, 210, 290, 304, 702 and 720. If any of the above sections are relevant, they should be included in the specification.
Irc 37 revised 19-07-2012 1. IRC: 37-2012 GUIDELINES ... The sub-base layer serves three functions, viz., ... IRC: 37-2012 36 Fig. 10.4 shows a four layer pavement consisting of bituminous surfacing, recycled layer Reclaimed asphalt pavement, cemented subbase and the subgrade.
Type 4 Sub-Base Granular Sub-Base Material (Clause 806) Sub-Base SERIES 900 Clause 901 and 903 to 906, 929, 930, 932 to 937, 944, 946, 947, 948 Bitumen Bound Roadbase/Basecourse Load Bearing Layer Of The Road Structure Clause 901 and 908 to 911, 914, 916, 924, 926, 938, 942, 943 Bitumen Bound Surfacing Surface Layer Of The Road Construction ...
overlays the waterproofing system should be sand asphalt as well as considerations about the bond of the surfacing to the waterproofing system and the sub-surface drainage. In service, it has been found that the performance of surfacing on concrete bridges is generally satisfactory if the total thickness of the asphalt layers is at least 120 mm.