IFB 93F-24 Track Material Specification.pdf

MBTA M.O.W. Division Material Specification April. 2024

MASSACHUSETTS BAY TRANSPORTATION AUTHORITY

MAINTENANCE OF WAY DIVISION

TRACK MATERIAL SPECIFICATION

132 RE END FLARE

MATERIALS

New 132# RE End Flare section, heat-treated, head hardened, steel rails with a milled base to be used in conjunction with 115# RE running rail. The new rail shall be capable of being welded by each of the following processes:

A. Electric-flash butt welding method B. Oxyacetylene pressure butt welding method C. Thermite welding

DESIGN

Head Hardened (HH) rails shall conform to the following specifications in the current AREMA Manual for Railway Engineering, Volume 1, Specifications for Steel Rails, Section 4.2.1 through 4.2.1.20. The base of the restraining rail will be milled for attachment of 115# RE running rail as shown on attached MBTA plan number T-e- 112380. The 132# RE End Flare rail shall be furnished straight in lengths of 3'-3 1/2”.

End drilling should be 3 3/32” A.B., 1 1/8” dia. holes, @ 3 1/2” and 9 1/2” end to C.L. In addition, there shall be 2 holes drilled, 1 1/2” dia., at 23” O.C., 3 1/32” A.B. measured 15 1/2” from the end. Approach end to be beveled at 45° beginning 3 5/8” A.B. Head of rail to be beveled at 25° over 24” plane, 3 1/2” from approach end. As shown on MBTA plan number T-e-112380.

This document is for the procurement of 132# RE End Flare only.

INSPECTION

The bidder shall be responsible for engaging the services of a qualified, independent inspection agency, approved by the Authority, for in-plant inspection of the material specified herein. Services shall include visual inspection and physical measurements of the material, as well as review of the plant records to ensure compliance with the plans and specifications. All costs incidental to the inspection services shall be included as part of the bid proposal. Inspection and laboratory reports are to be forwarded to the individual named below for review prior to scheduling the materials for shipment.

MBTA M.O.W. Division Material Specification April. 2024

SUBMITTALS

Prior to fabrication, the fabricator shall submit detailed shop drawings of the restraining rail to the authority for approval. Submit to:

Maintenance of Way Engineer

MBTA

21 Arlington Avenue Charlestown, Massachusetts 02129

SHIPMENT

All materials are to be shipped via motor freight to the following location during the hours (7:00 AM to 1:00 PM Monday through Friday), Conformation of delivery time and date must be given at least twenty-four (24) hours in advance during the same business hours. Shipment shall be directed to the following individual:

Supervisor of Yard Services 21 Arlington Avenue

Charlestown, Massachusetts 02129 (617)222-5290

DELIVERY

To be accepted, the rails delivered to the MBTA shall conform to these Specifications in all respects. Material is at the supplier’s risk until accepted at the specified delivery site by an authorized representative of the MBTA. Material rejected for non-compliance with these Specifications will be returned to the supplier wholly at the supplier’s expense.

3' -3 1/2" I

I I

BEVEL 250

I

31/2,,-L-1-PLANE 24,,-1

I

PLAN VIEW

1 '-6"

4500'0.0"

01 1/2"

3 1 /32"

(TYP. OF 2)

ELEVATION

3 1 /2" 6" 6"

3 3/32"

01 1/8"

01 1/8"

1. RIGHT HAND END APPROACH AS SHOWN;

LEFT HAND OPPOSITE.

2. RAIL TO BE MACHINED IS FULLY

HEAT-TREATED TO BRINELL

HARDNESS # 321-388.

/\ r-- 2500'0.0" ~ r 1 15/16"

I

(j)

END VIEW

SYSTENWIDE

MAINTENANCE

OF WAY

ENGINEERING

MASSACHUSETTS BAY TRANSPORTATION AUTHORITY

TRACK 8T ANDARD

132 LB. AREMA RESTRAINING

RAIL END APPROACH

MASSACHUSETTS BAY TRANSPORTATION

AUTHORITY

-III':

~ of T- ~ Dolo: - ""'loot ~ -- of Way -

HORIZ: 1112"= 1'-0" DES'" DR'" C"'''' ~ T-e-112380

ISSUE

G

DATE: FEB 05

VERT: 1 112" = 1'- (1' DWM DW GJD

OF 1 SHEET 1

FILENAME: Dalai 132 Lb. End Planing I R2OO4