406.3 Base Courses. Class I Base Course materials shall be approved prior to use. Materials. This Specification covers the requirements of constructing a base course composed of naturally or artificially mixed sand and clay.
200 (0.075 mm) sieve, made from the natural erosion of rocks, and consisting of sub-angular or rounded particles. Aggregate base course shall be applied over the prepared sub grade or sub base and compacted in accordance with Section 26 of the Caltrans Standard Specifications. 304-1 . Furnish uncontaminated materials of uniform quality that meet the requirements of the plans and specifications. SPR-1040 - Statistical Analysis of Aggregate Base Course Inspection Using an End Result Aggregate Specification (Sampling, Testing and Acceptance Procedures) SPR-1050 - Lincore Ni2 Low Alloy Submerged Arc Welding Wire 304.01 . B. Section includes specifications for aggregate base courses.
303.08 Dust Palliative SPECIFICATION P–208. It is designed to evenly spread the load of the paving, and any traffic thereon, to the sub-grade below. E. Surface Course - The upper portion of the pavement structure consisting of a mixture of mineral aggregates and bituminous material or Portland cement concrete. SOIL TYPE BASE COURSE MATERIALS
Preferred Aggregate Base Courses . Equipment initially approved for use Section 301 – Class I Base Course Equipment shall be in good working condition and shall not leak fluids onto the grade or roadway. 40 sieve Liquid limit & Plasticity index One per source LL ≤ 25 PI ≤ 4 ASTM 4318 Contractor 209-2.1 Fine Aggregate Base material fine aggregate Source One per source Minimum Sand Equivalent value of 35 ASTM 2419 QA 209-3.4 and 209-3.5 Aggregate Moisture/ Density CONSTRUCTION OF SUBGRADE, SUBBASE AND BASE LAYERS Dr. Anjaneyappa Department of Civil Engineering RV College of Engineering Bengaluru – 59 Email: anjaneyappa@rvce.edu.in Pavement Types Flexible pavements Rigid pavements / Cement Concrete (CC) Pavements Semi-rigid pavements Composite pavements Pavement Composition- Bituminous Vehicle Black … When this guide specification is used for aggregate base course under rigid pavement, section title of the project specification will be: BASE COURSE FOR RIGID PAVING and the words "rigid pavement base course" selected throughout. SP/SM4:060418 SPECIFICATION FOR BASECOURSE AGGREGATE Page 5 of 15 Table 3: Particle Size Distribution Shape Control Fractions Maximum and Minimum Allowable Percentage Weight Of Material Within the Given Fraction AP40 (Max size 40mm) AP20 (Max size 20mm) 19mm - 4.75mm 9.5mm - 2.36mm 4.75mm - 1.18mm 2.36mm - 600μm 1.18mm - 300μm 2 … ... Base course material, consisting of a specific type of aggregate, is placed on top of the subbase. Crushed aggregate base coarse (Compaction Gravel) shall be purchased per standard ton with a standard ton to weight 2,000 pounds for the purpose of this contract. Aggregate Description . Provide a subbase material which meets the specification material requirements and is within the Contractor’s capabilities to place and fine grade to the required tolerances. b. 1 57 4 inch 100 Notice the major differences in the above specification in the top-sized material and the smallest sized material. Base course Work shall include, but not be necessarily limited to the following:. Construct it on a prepared underlying course in accordance with these Specifications and in conformance Asphalt treated base (ATB) is a dense-graded (but more permeable) HMA with a wide gradation band and lower asphalt content intended for use as a stabilizing base course and intended to be used in conjunction with a top/ wear course of street/ highway grade HMA (typically 1/2 inch or 3/8 inch HMA as currently defined by Washington state DOT specifications). Section 924 — Cold Patch Material 934 Section 925 — Detectable Warning Surface 938 Section 926 — Foamed Asphalt Stabilized Base Course Mix 940 Section 927 — Open Graded Friction Course Mix 943 Section 950 — Traffic Materials 945 Section 951 — Pavement Marking Materials 961 2020 Standard Specifications for Construction and Materials Test following Section 01454 - Testing Laboratory Services. B. conforming to Specification Section 901 in lieu of the Class II Base Course type selected for the project. Tables 1 and 2, which begin on page 5, compare the material characteristics of MnDOT’s lass 5 aggregate and the preferred base course aggregate from eight of the nine responding states. LEVELING COURSE Material: The leveling course shall consist of asphaltic concrete Type IM-1A (VDOT specifications). SUPPLEMENTAL SPECIFICATION S.C.
Specifications of granular sub-base (GSB) materials conforming to MORTH: Specifications for Road and Bridge Works are recommended for use. User Guides. Provides personnel of all experience levels with enough information to . Sub-base course Granular Sub-base (GSB) materials conforming to clause 401 of MORT&H specifications for road and bridge works is recommended The sub-base material should have minimum CBR of 20% for cumulative traffic up to 2 msa and 30% for traffic exceeding 2 msa.
It provides additional load distribution, contributes to drainage, uniform support to the pavement and … Master Tol. shall be corrected. Aggregate base course shall be applied over the prepared sub grade or sub base and compacted in accordance with Section 26 of the Caltrans Standard Specifications. Aggregate base course shall have minimum uniform thickness after compaction of dimensions indicated. Where not indicated, compacted thickness shall be 6 inches. Not intended for use in locations where surfacing will not be placed over the base. 1.2.4 Leveling course layer – a non-structural layer of … When this guide specification is used in combination for a subbase soil type base course materials. This project was initiated to determine the viability of a ¾-inch minus gradation The 2.
aggregate base course. All … Asphalt concrete base courses provide the majority of the structural capacity in most flexible pavement buildups. Amendment – February 2016 3 Volume 1 Series 700 Specification for Highway Works Road Pavements – General 4 (02/16) For checking compliance with sub-Clause 2 of this Clause, measurements of the surface levels of all courses will be taken on a grid of points located as described in contract specific Appendix 7/1.
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