IFB 258F-24 AREMA Switch point and frog Spec 2024.pdf

MASSACHUSETTS BAY TRANSPORTATION AUTHORITY

SYSTEM MAINTENANCE AND IMPROVEMENTS

WAY ENGINEERING AND MAINTENANCE DIVISION

SPECIFICATIONS FOR PROCUREMENT

SAMPSON TYPE

STANDARD AREMA RAILBOUND MANGANESE FROGS

AND STANDARD AREMA SWITCH POINTS

WITH STOCK RAIL, HEEL BLOCK AND COMPONENTS

July 2024

Description

This document includes specifications for furnishing, fabricating and delivering of special trackwork components for AREMA Railbound Manganese Frogs and AREMA Switch points/Stock rails. Switch point, stock rail, heel block and all required components shall be delivered bolted and banded together as one unit. Delivery or partial delivery shall occur 120 days after receipt of Purchase Order.

Submittal

Prior to fabrication, the manufacturer shall submit for approval detailed shop drawings of each component, illustrating material construction and fabrication tolerances. Actual fabrication of parts shall not be undertaken until drawings are reviewed and approved. Shop drawings shall be forwarded to the following individual for review:

Email: qchung@mbta.com Engineer

Massachusetts Bay Transportation Authority Engineering and Maintenance

Building 2 26 Arlington Ave

Charlestown, MA 02129 Cell 857-274-7752

Submit shop drawings of all special trackwork. Each shop drawing set shall include a general plan for the entire project denoting all trackwork pieces including plans of all miscellaneous material indicating full descriptions of all critical dimensions. Frog shop drawings shall indicate the joints before the toe of frog, and the joints after the heel of frog, the frog angles, heel and toe lengths, heel and toe spreads, and all critical dimensions.

Submit certified test reports from the manufacturer, or from a laboratory approved by the

Engineer.

Fabrication shall not take place until all drawings are reviewed and approved. If there are determined to be errors or omissions in information necessary for a clear understanding of the work at any time during the manufacturing, the manufacturing process shall not proceed, and may resume only after all errors and/or omissions have been resolved.

Manufacturer shall provide CAD drawings for each shop drawing submitted.

mailto:qchung@mbta.com

Quality Control

Prior to the commencement of deliveries of special trackwork components and material, the manufacturer, or laboratory approved by the Engineer, shall submit for review certified reports indicating material properties in conformance with AREMA Plan No. 100-08 Specifications for Special Trackwork and other applicable AREMA plans.

Impact areas of manganese frog castings shall be explosive depth hardened.

The manufacturer shall establish and maintain a quality assurance plan for the entire production process of special trackwork.

Brinell hardness tests shall be performed within impact areas of the switch point and stock rail in accordance with the ASTM E 10.

All relevant articles of the AREMA Specifications for Special Trackwork shall be met for acceptance requirements. Special trackwork components and material which do not comply or which, notwithstanding tests, inspection or acceptance at any pervious time or location, are found to contain deficiencies, will be rejected.

The Engineer or his representatives shall have free entry to the special trackwork manufacturing plants at all times while the work for this project is undertaken. The Engineer or his representatives shall be provided with proper facilities and testing equipment to ensure that the special trackwork is as specified.

The manufacturer shall engage the services of a qualified inspection agency or provide their own experienced and competent QA/QC personnel for the inspection of the material specified herein. Actual physical inspection of the frogs, switch points & components as well as the review of the manufacturing processes to assure compliance with plans and specifications shall be completed. Completed inspection reports shall be mailed to the MBTA prior to shipment of the material.

Shipping

Upon completion of fabrication, all materials shall be shop assembled to guarantee proper gage and alignment. All material must be palletized and banded, (switch points are to be banded to the appropriate stock rail with heel block in place) for delivery via motor freight to the following location during normal business hours (6 AM to 1 PM Monday through Friday).

Conformation of delivery time and date must be given 48 hours in advance during the same hours.

MBTA Rail Shop 21 Arlington Avenue

Charlestown, MA 02129 Superintendent of Yard Services at (617) 222-4208.

Email: Ddifronzo@mbta.com and Qchung@mbta.com mailto:Ddifronzo@mbta.com mailto:Qchung@mbta.com

ITEM 1: No. 6 Switch Point:

13'-0" long, double reinforced, switch point (curve and straight), 115 RE rail section per Plan Nos. 121-08, 221-12, 920-18 and Section 100-08 in the A.R.E.A. Portfolio of Trackwork Plans, Specifications for special Trackwork, latest edition. Each switch point to be supplied with a 39’-0”, undercut stock rail (straight and curve) with standard fishing at either end for No.

6 AREMA turnout. Cast or welded heel block assembly with all bolts necessary including the #1 shoulder bolt. Switch point and stock rail to be fully heat treated to 321 - 388 Brinell.

Required:

• 5 RH for RHTO

• 5 LH for LHTO

• 2 RH for LHTO

• 2 LH for RHTO

ITEM 2: No. 10 Switch Point:

19’-6" long, double reinforced, switch point (curve and straight), 115 RE rail section per Plan Nos. 121-08, 221-12, 920-18 and Section 100-08 in the A.R.E.A. Portfolio of Trackwork Plans, Specifications for special Trackwork, latest edition. Each switch point to be supplied with a 39’-0”, undercut stock rail (straight and curve) with standard fishing at either end for No.

6 AREMA turnout. Cast or welded heel block assembly with all bolts necessary including the

• 10 RH for RHTO

• 10 LH for LHTO

• 5 RH for LHTO

• 5 LH for RHTO

ITEM 3: No. 15 Switch Point:

26’-0" long, double reinforced, switch point (curve and straight), 115 RE rail section per Plan Nos. 121-08, 221-12, 920-18 and Section 100-08 in the A.R.E.A. Portfolio of Trackwork Plans, Specifications for special Trackwork, latest edition. Each switch point to be supplied with a 60’-0”, undercut stock rail (straight and curve) with standard fishing at either end for No.

6 AREMA turnout. Cast or welded heel block assembly with all bolts necessary including the

• 2 RH for RHTO

• 2 LH for LHTO

• 4 RH for LHTO

• 4 LH for RHTO

ITEM 4: No. 20 Switch Point:

39’-0" long, double reinforced, switch point (curve and straight), 115 RE rail section per Plan Nos. 121-08, 221-12, 920-18 and Section 100-08 in the A.R.E.A. Portfolio of Trackwork Plans, Specifications for special Trackwork, latest edition. Each switch point to be supplied with a 60’-0”, undercut stock rail (straight and curve) with standard fishing at either end for No.

6 AREMA turnout. Cast or welded heel block assembly with all bolts necessary including the

• 2 RH for RHTO

• 3 LH for LHTO

• 3 RH for LHTO

• 2 LH for RHTO

ITEM 5: Heel Block Assembly:

Provide cast or welded heel block assembly with all bolts necessary including the #1 shoulder bolt for both curve and straight switch point 115 RE rail section per Plan Nos. 121-08, 221-12, 920-18 and Section 100-08 in the A.R.E.A.

• 12 Heel block assemblies with all bolts & shoulder bolt RH-LHTO

• 12 Heel block assemblies with all bolts & shoulder bolt LH-RHTO

ITEM 6 to 11: AREMA RBM Frogs:

Item Quantity Unit Description AREMA Plan

6 6 EACH No. 6 AREMA Standard Wall Railbound Manganese Frog(10’ length) PT 612-01

PT 600-01

7 6 EACH No. 6 AREMA Medium Wall Railbound Manganese Frog (11’ Length) PT 617-03

PT 616-03

8 4 EACH No. 10 AREMA Heavy Wall Railbound Manganese Frog 623-09 621-18

9 4 EACH No. 12 AREMA Heavy Wall Railbound Manganese Frog 624-09 621-18

10 4 EACH No. 15 AREMA Heavy Wall Railbound Manganese Frog 624-09 621-18

11 4 EACH No. 20 AREMA Heavy Wall Railbound Manganese Frog 625-09 621-18