IFB 155C-20 Technical specfrogs SEPT2020.pdf

MASSACHUSETTS BAY TRANSPORTATION AUTHORITY

SYSTEM MAINTENANCE AND IMPROVEMENTS

WAY ENGINEERING AND MAINTENANCE DIVISION

SPECIFICATIONS FOR PROCUREMENT OF

TWENTY FOUR (24) FULLY GUARDED SPECIAL A.R.E.A MODIFIED

SOLID MANGANESE FLANGE BEARING STEEL FROG

(WITH SPECIAL JOINT BARS & ASSOCIATED BOLTS/NUTS)

SWITCH #70 FROG (2 EACH);

SWITCH #71 FROG (2 EACH);

SWITCH #72 FROG (2 EACH);

SWITCH #74 FROG (2 EACH);

SWITCH #88 (AND #64) FROG (4 EACH);

SWITCH #89 FROG (2 EACH);

MODIFIED AREMA #5 FROG_FLANGE BEARING (5 EACH)

MODIFIED AREMA #6 FROG_FLANGE BEARING (5 EACH)

SEPTEMBER, 2020

Description

This document includes specifications for furnishing, fabricating, and delivering

Twenty (24) guarded solid manganese flange bearing steel frogs and all associated special joint bars, bolts and nuts. Frog plate is not required in this procurement. All frogs and associated frog materials shall be in accordance with the most recent edition of AREMA Portfolio of Trackwork Plans and as shown on MBTA plans.

Delivery of all material shall not exceed two hundreds and seventy (270) days from final shop drawing approval.

The following codes, regulations, referenced standards and specification apply to work included in this specification:

1. American Railway Engineering and Maintenance -Of- Way Association

(AREMA), Latest edition:

a. AREMA Manual for Railway Engineering, (Latest edition)

b. Portfolio of track Plans, (Latest edition)

2. American Society for Testing and Materials (ASTM)

a. A176, Standard Specification for Stainless and Hear- Resisting

Chromium Steel Plate, Sheet, and Strip.

b. A781/781M Specification for Castings, Steel and Alloy, Common

Requirements, for General Industrial Use

c. Testing

1. Prior to the commencement of deliveries of special trackwork components and material, obtain certified reports from the manufacturer or a laboratory approved by the engineer indicating the properties, as specified.

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

3. 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, not withstanding tests, inspections or acceptance at any pervious time or location are found to contain deficiencies, will be rejected.

4. Brinnell hardness tests shall be performed within the impact area as of the frog in accordance with the ASTM E10. Casting not meeting

AREA requirements for depth hardening will not be accepted.

Dimensional tolerance of frogs shall comply with the AREA Portfolio of Trackwork Plans, section 100-08 and 101-14.

d. Inspection

1. The manufacturer shall engage in the services of a qualified inspection agency for inspection of the material specified herein. Actual physical inspection of the frogs as well as review of manufacturing processes to assure compliance with plans and specifications shall be undertaken. Completed inspection reports shall be mailed to the

MBTA prior to delivery of the material.

2. The MBTA or his representatives shall have free entry to the special trackwork manufacturing plants at all times while the work for this project is undertaken.

3. The finish product shall be free of markings left from the casting process. Fit and Finish of the casting shall be in accordance with the latest edition of the AREMA Portfolio of Trackwork Plans, section M

2.5, workmanship.

Submittals

1. Submit certified test reports from the manufacturer or from a laboratory approved by the engineer.

2. 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 a full description of all critical dimensions.

3. Shop drawing plans for special trackwork shall indicate the switch tie layout and the lengths of all switch ties.

4. Shop drawing plans for frogs shall indicate the joints before the toe of frog to the joints after the heel of frog, the frog angles, heel and toe lengths, heel and toe spreads, frog angles and critical dimensions.

5. Manufacturer shall submit all final detailed CAD drawings for each frogs.

6. 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.

Materials

The special trackwork for this specification consists of twenty four (24) guarded solid manganese steel frogs and all associated special joint bars, bolts and nuts.

All frogs shall conform to 115#/132# RE section.

1. Special trackwork component castings shall be configured for compatibility with the MBTA Standard LRT Wheel as shown on MBTA Plan No. 750R.

Tread clearance shall not exceed 3-1/2” unless specifically directed otherwise. Treads and flangeways in casting shall be shaped to suit A.T.E.A steel wheel type “C” 3 having three (3”) inch tread and three quarter (3/4”) inch depth of flange as shown and a 1” flange width.

2. Frogs shall be flange-bearing design. Flange-bearing details (which apply to both frogs and point mates) are shown on MBTA plan No. 735.

3. Transition length for flangeway widths of crossing frogs shall occur in the last 20” of each crossing frog arm.

4. Frog ends shall be designed to accept rail sections as indicated on MBTA plan for distance of 15” into the frog.

5. Frog arm should be measured from the theoretical point, as shown on below specific MBTA plans.

6. Special Joint Bars

Special joint bar assemblies for use with 115# RE running rail in conjunction with 132#RE vertical restraining rail shall consist of one 24” long joint bar for

115# RE rail, one 24” long joint bar for 132# RE rail and 4” long cast iron spacer block assemblies for use with restraining rail as indicated on the enclosed plans. Joint bars and attachments shall be in accordance with the latest edition of the AREMA plans and specifications Volume 1, chapter 4, part 1, pp.

4-1-8, 4-1-9, part 2, pp. 4-2-9through 4-2-11, part 2, pp. 4-2-15 through 4-2-18 and part2, pp. 4-2-19 through 4-2-21. Bolts and nuts shall be oval neck and square, respectively, and rail drilling and bar punching shall be per AREA chapter 4, part 1, pp. 4-1-14 and 4-1-15, except rail drilling and bar punching shall be 3 1/32” above base of rail, as indicated. Cast iron spacer blocks shall be as specified in the MBTA specifications for 132# RE high strength restraining rail and attachments.

7. Dimensions

A. Special trackwork dimensions indicated are representative only and the manufacture shall be required to verify all information with respect to calculations and details.

B. Special trackwork components and track appurtenance dimensions shall provide an accurate fit and uniform bearing surfaces at all points.

C. Bolts shall be of sufficient length to permit wrench access after installation in track.

D. Plain washers shall be a min of ½” thick. Beveled edges of plain washers shall be a min of 3/8” thick.

8. Tolerances

A. Permissible variations in dimensions, fit shall be in accordance with the AREA Specifications.

B. Gauge dimensions shall be subject to a tolerance of plus or minus

1/16” inch, measured 1/2” inch below the top of rail.

C. Flangeway dimensions shall be subject to a tolerance of 0 under and

1/16” inch over, measured 1/2” inch below top of rail.

D. Frogs shall be subject to a tolerance of plus or minus 1/8” inch on their toe and heel lengths. Frog toe and heel spreads shall be subject to a tolerance of plus or minus 1/16” inch.

9. Markings and Identification

A. Special trackwork shall be identified with marking in accordance with the AREA Specifications for Special Trackwork, except as specified.

B. Special trackwork shall be identified with shop marks, match marks and identification tags as follows:

1. Shop marks shall designate the number of the portion, the connecting trackwork part, the trackwork piece or the miscellaneous material identify; all corresponding to marks indicated on the manufacture’s shop drawings.

2. Match marks shall designate adjoining trackwork parts, trackwork pieces and miscellaneous material at all joints and at their intended locations. The match marks shall correspond with the markings indicated on the manufacture’s shop drawings.

3. Shop marks and match marks shall be applied by means of paint markers of different colors so as to be distinguished.

The marks shall be clear and legible to permit proper assembly in the field.

4. Identification tags shall indicate the following information:

1. The portion, part and piece number.

2. The manufacture’s name

3. The Designation “right hand” or “left hand”.

4. The description

5. The length or frog number.

6. The designation “special” or “standard”

C. Identification tags shall be stainless steel in accordance with ASTM A

D. The tags and their markings shall be large enough to permit field identification.

10. Frogs shall confirm to the latest edition of the AREMA Portfolio of Track work Plans drawing # 600-A-79, Plan# 671-09, 100-08_section M2.7 and the following items:

Item 1: Switch #70 Frog – 2 each (Right Hand Frog) Park St. Loop

The Switch #70 Frog shall be guarded solid cast manganese flange bearing steel frog centerline radius (C.R.) 200’ radius turnout of length and geometry shown on MBTA plan #851-F70. Frog shall be 2 arms curved, 3 arm restrained, 8’-0” long, all 4’ arms as shown on MBTA plan # 850-F70

Item 2: Switch #71 Frog – 2 each (Right Hand Frog) Park St. Loop

The Switch #71 Frog shall be guarded solid cast manganese flange bearing steel frog C.R. 50’ radius turnout of length and geometry shown on MBTA plan

#851-F71. Frog shall be 2 arms curved, 3 arm restrained, 8’-0” long, all 4’ arms as shown on MBTA plan # 850-F71

Item 3: Switch #72 Frog – 2 each (Right Hand Frog) Park St. Station

The Switch #72 Frog shall be guarded solid cast manganese flange bearing steel frog C.R. 57.64’ radius turnout of length and geometry shown on MBTA plan

#851-F72. Frog shall be 2 arms curved, 3 arm restrained, 8’-0” long with 3’-2” toe arms and 4’-10” heel arms as shown on MBTA plan # 850-F72 & #851-

F72

Item 4: Switch #74 Frog – 2 each (Left Hand Frog)_Hay Market

Station Westbound

The Switch #74 Frog shall be guarded solid cast manganese flange bearing steel straight frog with geometry shown on MBTA plan #851-F74. Frog shall be 2 arm restrained, 8’-0” long with 3’-2” toe arms and 4’-10” heel arms as shown on MBTA plan # 850-F74 & #851-F74. The frog angle shall be 13°-08’-21”.

Item 5: Switch #88 Frog (and Switch #64) – 4 each (Left Hand Frog)

Government Center Station Loop (Sw. #88) and Copley Junction (Sw.

#64)

The Switch #88 (and Sw. #64) Frog shall be guarded solid cast manganese flange bearing steel frog C.R. 150’ radius turnout of length and geometry shown on MBTA plan #851-F88. Frog shall be 2 arms curved, 2 arm restrained, 8’-0” long with 3’-2” toe arms and 4’-10” heel arms as shown on MBTA plan

# 850-F88 & #851-F88.

Item 6: Switch #89 Frog – 2 each (Right Hand Frog) – in a spiral

_Hay Market Station Eastbound

The Switch #89 Frog (in a spiral) shall be guarded solid cast manganese flange bearing steel frog with the geometry shown on MBTA plan #851-F89. This frog is in a spiral. Frog shall be 2 arms curved, 2 arm restrained, 8’-0” long with 3’-

2” toe arms and 4’-10” heel arms as shown on MBTA plan # 850-F89 & #851-

F89. The frog angle shall be 13°-08’-21”.

Item 7: Modified AREMA #5 Solid Manganese Steel Frog – 5 each

– Switch #25, #26, #26A, #11, #9 Reservoir Highland Branch

The #5 Frog shall be guarded solid cast manganese flange bearing steel frog with the geometry shown on MBTA plan #851-No.5. Frog shall have 2 arm restrained, 9’-0” long with 3’-6 ½” toe arms and 5’-5 ½” heel arms. The frog angle shall be 11°-25’-16”.

Item 8: Modified AREMA #6 Solid Manganese Steel Frog – 5 each

Beacon Junction Switches, Switch #1E, 1W, 3E, 3W Grove St.

Highland Branch.

The #6 Frog shall be guarded solid cast manganese flange bearing steel frog with the geometry shown on MBTA plan #851-No. 6. Frog shall have 2 arm restrained, 10’-0” long with 3’-9” toe arms and 6’-3” heel arms. The frog angle shall be 9°-31’-38”.

Shipping

Upon completion of fabrication, all materials shall be shop assembled to guarantee proper gage and alignment. All material must be palletized and banded, for delivery via motor freight to the following location during normal business hours (7 AM to 1:00 PM Monday through Friday).

Conformation of delivery time and date must be given 24 hours in advance during the same hours.

MBTA Rail Shop

21 Arlington Avenue

Charlestown, MA 02129

ATTN: Mike Snow

Rail Yard Services

617-222-5290

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MBTA M.O.W. Division

Material Specifications

June 2001

MASSACHUSETTS BAY TRANSPORTATION AUTHORITY

MAINTENANCE OF WAY DIVISION

TRACK MATERIAL SPECIFICATION

Joint Bars and Associated Hardware

MATERIAL AND MANUFACTURE

Standard joint bar assembly to consist of two toeless, headfree bars of the rail section and length indicated, track bolts, nuts and washers in quantity as dictated by the specified joint bar length. All material and processes shall be in accordance with the current

AREMA manual for Railway Engineering, Chapter 4, Part 2 – Specifications for

Quenched Carbon Steel Joint Bars.

Track bolts and nuts material and manufacture shall be in accordance with the current

AREMA Manual, Chapter 4, Part 2 – Specifications for Heat-Treated Carbon Steel Track

Bolts and Carbon Steel Nuts.

1. Prior to shipment, entire bolt thread shall be coated with an appropriate oil or grease to protect the threads during shipment and storage.

2. Bolt and nut shall be assembled for shipment by turning the nut onto the bolt at least two threads.

Lockwasher material and manufacturer shall be in accordance with the current AREMA

Manual, Chapter 4, Part 2 – Specifications for Spring Washers.

DESIGN

Joint bars shall be in accordance with Plan No. 320 in the MBTA M.O.W. Division Book of Standard Trackwork Plans. Varying lengths of bars and different rail sections may be specified by any particular order. Length and bar punching will be indicated in the order.

Compromise joint bars shall be in accordance with MBTA Plan No. 350 for the rail sizes as specified in the order.

Track bolts shall be rolled, button-head, elliptic neck bolts with wrench fit thread and shall be provided with standard square nuts all per the current AREMA Manual Chapter

4, Part 1. Bolt diameter and length shall be as specified in the order.

Lock washer diameter shall be as specified in the order and washer configuration shall conform to requirements of ANSI, B27.1, for Extra Heavy Duty Helical Spring Lock

Washers.

MBTA M.O.W. Division

Material Specifications

June 2001

INSPECTION AND DELIVERY

Inspection and testing shall be in conformance with the inspection procedures outlined in the current AREMA Manual, Chapter 4, Part 2.

Prior to shipment, the manufacturer or supplier shall submit certified inspection and test reports as required.

Joints shall be wired into matched pairs, palletized and strapped for shipment.

Bolts and nuts shall be packed in sealed kegs with a maximum of 200 lbs. per keg. Kegs shall be palletized and wrapped or strapped for shipment.

Lock washers shall be packed in steel pails or kegs with a maximum of 200 lbs. per container.

To be accepted, all material specified herein shall conform to these Specifications in every respect. 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.

115 RE RAIL

DO NOT DRILL FIRST HOLE UNLESS

SPECIFICALLY ORDERED. TO BE FIELD

DRILLED WHEN REQUIRED

END OF RAIL

SPECIAL INSULATED JOINT 115 RE

WITH 132 RESTRAINING RAIL

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