SPECIFICATION FOR TRACK BALLAST 1. SCOPE: These specifications will be applicable for stone ballast to be used for all types of sleepers on normal track, turnouts, tunnels and deck slabs etc on all routes. 2. DETAILED SPECIFICATIONS: 2.1 GENERAL 2.1.1 Basic Quality: Ballast should be hard durable and as far as possible

Table 6-8. Recommended Ballast Gradations. butneverabove. thetop. 13.SUB-BALLAST. a. Purpose.Sub-ballast is a layer of materialbetweenthetop ballast andsubgradewith a gradation. finerthanthetop ballast andcoarserthanthesubgrade.Sub-ballast is oftencheaperthantopballast, so. it can be used to reducetotalballastcost or to provide a ...

Infrastructure Services Specification - Sub-ballast recommend that the maximum value of the LL should be 25 % and the maximum PI value must be 6%. Regarding the results of these parameters found, the materials are to be used, since they fit the specifications. 4.2 Subject and Sub-ballast - compaction, California Bearing (CBR) …

The granular specimen utilized as ballast material is crushed aggregate derived from parent rock type of basalt. To recognize the efficacy of gradation of aggregate, four distinct initial gradations are considered for ballast particles as shown in Fig. 2.a based on the American Railway Engineering and Maintenance-of-Way Association (AREMA) …

Our team of experts in construction and railroad aggregates has over 35 years of experience. Shoreline Aggregate Solutions can help you select the ideal solution for your specific project specifications and goals. Contact …

However, the drawback to this and other reflectometer tests is that the surface being tested must be relatively flat and homogenous. This test cannot be used on smooth, river-washed stone ballast because the ballast itself creates shadows on its surface due to the roughness of the stone. This is because most stone ballast is …

Are you looking for the latest edition of the Manual for Railway Engineering by AREMA? Check out this PDF file that contains the table of contents for Chapter 1, which covers general information and design criteria for railway engineering. You will find the scope, purpose, definitions, references, and organization of the manual, as well as the design …

Railroad Ballast (Rock): Specifications, Sizes, Background. Last revised: March 17, 2023. Track ballast (usually crushed stone), as it is known, is another …

Quarried stone ballast should be obtained from com­ petent strata of reasonable thickness. The extent of the rock deposit should be sufficient for economic ballast production. A …

This document outlines the material, stockpiling, and handling specifications of ballast. It covers the supply of ballast from the quarry site to the storage yard for the two following …

The Perfect AREMA Ballast. AREMA Ballast (4, 4a, & 5) is also known as ballast stone, railroad ballast, walking ballast, mainline ballast, shortline ballast, and yard ballast, This material is used primarily for railroads as mainline ballast or cross walk material.Because the purpose of AREMA Ballast is to improve drainage. Ordovician Dolomitic Limestone …

Superior ballast aggregate shape properties such as by an angular crushed stone have been proven to be critical for ballast strength and stability. Yet, impacts of different AREMA gradations on functional performance of ballast have not been fully explored. Such an investigation of proper ballast gradation design should

3. class 1 and class 2 ballast materials are specified by chief engineer. in poor native soil conditions where 2. select material to be used as subballast 0001, or std dwg 0002. 1. for …

formerly: GO-TRK BALLAST SPEC-10.0-2016-REV0 PAGE 1 OF 8 . PART 1 - GENERAL REQUIREMENTS 1.1 DESCRIPTION OF SPECIFICATION . This document outlines the material, stockpiling, and handling specifications of ballast. It covers the supply of ballast from the quarry site to the storage yard for the two following classes of crushed rock …

1.1 This classification defines the aggregate size designations and ranges in mechanical analyses for standard sizes of aggregate used as ballast for membrane roof systems. 1.2 The text of this classification references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures ...

NR/L2/TRK/8100. June 6, 2009. Railway Ballast & Stoneblower Aggregate (aka NR/SP/TRK/006) This specification applies to all Railway Ballast for use in Network Rail controlled infrastructure except for ballast directly returned to …

3.1 Ballast. Railway ballast is the crushed stone that forms the top layer of the substructure, in which the tie (sleeper) is embedded and supported. ... A better practice is to separate ballast particle wear and crushing characteristics in a ballast specification by using both the LAA value and the MA value separately (Klassen et al. 1987).

Ballast produced by Lamarche McGuinty Inc. meets the specifications of railway companies, whether for heavy merchandise or passenger trains. ... Below is a list of the most commonly available stone based on clients specifications. REQUEST A QUOTE. SPECIFIED CRUSHED STONE. CG – 14 (0 – 3/8'') MG – 20 MTQ (0 – ¾'') MG – 20 B (0 ...

Ballast produced for use on main lines is generally governed by standard specifications, although specifications vary between roads for the same types of ballast. The most common size of stone used is that known as 2in. - stone.. Good results can be obtained, however, by using 11/2-in. stone or even 1- in. or 3/4- in. sizes, and in -

🕑 Reading time: 1 minute Many types of stones are available such as basalt, marble, limestone, sandstone, quartzite, travertine, slate, gneiss, laterite, and granite which can be used as construction materials. The stones used for building construction should be hard, durable, tough, and should be free from weathered soft patches of material, cracks, and …

Subcommittee 2: Ballast. D2-1-11: Re-cycled Crushed Concrete for Sub-ballast application. D2-3-17: Rewrite of Section 2.11 Sub-ballast Recommended Practice ... Specifications for Steel Tunnel Liner Plates . D4-11-17: Rewrite of Section 4.21 – Construction of Tunnel Using Steel Tunnel Liner Plates. D4-1-18: Rewrite of Section 4.22 …

Ballast is generally defined as a volume of graded crushed rocks, however many other materials have been used or developed to serve as ballast [1].It is typically laid in a compacted layer, generally 250–350 mm thick, as shown in Fig. 1.It has the following functions [1], [2], [3]:. Resistance to the sleepers against vertical, longitudinal and lateral …

Description: The MBTA seeks to Purchase STONE-BALLAST 1-1/2" AREA TY 4 MBTA SPEC 4/19. Category: Construction Equipment Buyer: Angela Knobel | 617-222-1609 | AKnobel@MBTA Bid tabulation sheet: Bid Tabulation Form Ballast Stone.docx Documents: Track Ballast - April 2019.pdf Initial Bid Opening Summary Form IFB 85-19 …

SPECIFICATION FOR TRACK BALLAST 1. SCOPE: These specifications will be applicable for stone ballast to be used for all types of sleepers on normal track, turnouts, tunnels and deck slabs etc on all routes. 2. DETAILED SPECIFICATIONS: 2.1 GENERAL 2.1.1 Basic Quality: Ballast should be hard durable and as far as possible

Its thickness can range between 0.10 and 0.30 m, crushed sand with fine mineral particles passing a No. 200 depending on the …

Wilson #4 AREMA 1-1/2" Railroad Ballast is a clean, crushed granite. This Ballast is produced daily at Wilson Quarry to meet the American Railway Engineering and Mining Association (AREMA) #4 Ballast Specifications as well as ASTM C-33 Size #4. This product has been used by the Railroad as Ballast Aggregate since the late 1800's.

Ballast produced for use on main lines is generally governed by standard specifications, although specifications vary between roads for the same types of ballast. The most …

Quarried stone ballast should be obtained from com­ petent strata of reasonable thickness. The extent of the rock deposit should be sufficient for economic ballast production. A large variety of rock types are used as ballast. In general, the fine hard min­ eral-grained unweathered aggregates make the best ballast.

Ballast stone should meet the membrane manufacturers requirements for the desired wind uplift resistance with regard to size and coverage rates. It is typically required that stone ballast meet the …

Principal schemes of railway ballast machine tamping: a -conventional tamping technology of Plasser and Theurer [3]; b -stone blowing [3]; c -side tamping technology of machine type VPO [40]; and ...