IFB 95F-24 Specification.pdf
PDF 78 KB Posted
- Attached to
- IFB 95F-24 3rd Rail Anchor Sets
- Solicitation number
- BD-24-1206-40000-40000-102126
- Issued by
- Suffolk County, Boston City, Massachusetts
About this file
This document is a specification for a 3rd Rail Anchor Assembly contract issued by the Massachusetts Bay Transportation Authority (MBTA) Maintenance of Way Division. The specification outlines the requirements for new 3rd Rail Anchor Assemblies designed for use with both 84C and 85C Composite 3rd Rail. The anchor assembly "kit" includes various components such as anchor clamps, eye bolts, nuts, washers, pins, cleavis, and fiberglass insulator rods. The specification provides detailed technical requirements for the strain insulators, including minimum breaking load, impact resistance, water immersion, and electrical resistance. Prior to fabrication, the fabricator must submit detailed shop drawings for both the 85C and 84C 3rd rail profiles. The bidder is responsible for engaging an independent inspection agency to visually inspect and measure the materials, as well as review plant records to ensure compliance. The materials must be shipped via motor freight to the MBTA's Charlestown location during normal business hours.
The related state and local contract opportunity is IFB 95F-24 3rd Rail Anchor Sets, which is issued by the state of Massachusetts. No additional pricing, set aside, incumbent, or funding details are provided in the given document.
View the file
Other files
| File | Type | Posted |
|---|---|---|
| IFB 95F-24 Bid Document.docx | DOCX document | |
| Minimum Insurance Requirements TIP Materials.docx | DOCX document | |
| 3rdAnchorAssembly_876.pdf | ||
| 3rdAnchorAssembly_874.pdf |
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Text version
MASSACHUSETTS BAY TRANSPORTATION AUTHORITY
MAINTENANCE OF WAY DIVISION
SPECIFICATIONS
FOR
rd
RAIL ANCHOR ASSEMBLY
September 2010
DESCRIPTION
New 3
Rail Anchor Assembly per MBTA drawing numbers 874 and 876. Anchor assemblies are to be designed for use with both 84C Composite 3 rd rail and 85C Composite 3 rd
Rail. Anchor clamp dimensions shown on MBTA drawing number 876 for 85C third rail profile. Anchor clamp for 84C third rail profile not shown.
Third rail anchor assembly “kit” to include:
Bill of Material
Item QTY Description Material
1 4 Third Rail Anchor Clamps Malleable Iron, HDG Galvanized
2 2 Shoulder eye bolt A36 Steel, HDG Galvanized
3 2 Hex Nuts Steel, HDG, Galvanized
4 2 Lock Washers Steel, HDG, Galvanized
5 4 Clevis pins Steel, HDG, Galvanized
6 4 Stainless Steel cotter pins Stainless Steel
7 4 Clevis Malleable Iron, HDG Galvanized
8 2 Fiberglass Insulator Rod Fiberglass
9 1 Anchor Bracket A36 Steel, HDG Galvanized
10 6 ½”x 4” Hex Head Drive Lags Steel, Zinc plated
Minimum Requirements
A. Strain insulators shall consist of insulators made of glass fiber with clevises attached to both ends.
B. The minimum breaking load in tension of glass fiber strain insulator rods shall be 15,000 pounds within a temperature range of 0 °F, +10 F.
C. Glass fiber strain insulator rods of 5/8 inch diameter shall sustain without fracture, when supported as a simple beam of 22 inches free span with a 3/16 inch thick leather over the anvil, the impact at mid-span of a 50 pound weight falling freely from successive heights of four (4) inches, eight (8) inches and twelve (12) inches. Such determinations shall be made at 70 °F and 0 °F.
D. Glass fiber strain insulator rods, when immersed in water for 48 hours with the temperature maintained between 68 °F and 104 °F, shall not gain more than 0.2 percent of their original weight. The specimens to be used shall be of the full cross sections of the rods, at least two (2) inches long with ends cut smooth.
E. Glass fiber rods eight (8) inches long shall, after immersion in water at room temperature for 72 hours and with all surfaces dried, have on electrical resistance of not less than eight (8) megaohms.
F. Glass fiber rods eight (8) inches long shall, after immersion in water at room temperature for 72 hours and with all surfaces dried, withstand without breakdown a DC potential of 5,000 volts applied at the ends of the rods for three (3) minutes.
G. The ends of the glass fiber strain insulator rods shall be embedded in clevises using an epoxy or other approved adhesive, such that within 24 hours after their embedment the clevises will not become loosened under a load of 10,000 pounds.
SUBMITTALS
Prior to fabrication, the fabricator shall submit detailed shop drawings of the 3
Rail Anchor
Assembly. Please provide details for both the 85C third rail and 84C third rail. Submit to:
Maintenance of Way Engineer
12 Arlington Ave
Charlestown, Massachusetts 02129
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 insure 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 above for review prior to scheduling the materials for shipment.
SHIPMENT
All materials are to be shipped via motor freight to the following location during normal business hours (6:00 AM to 2:00 PM Monday through Friday), Conformation of delivery time
MBTA, Building 2 and date must be given at least twenty-four (24) hours in advance during the same business hours. Third Rail Anchor Assemblies are to be packaged as a “kit”. Item is to be packaged to remain as a kit without breakage during shipment and subsequent storage. Shipment shall be directed to the following individual:
Supervisor of Yard Services
21 Arlington Avenue
Charlestown, Massachusetts 02129
(617)222-5290
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