MASSACHUSETTS BAY TRANSPORTATION AUTHORITY SYSTEM MAINTENANCE AND

IMPROVEMENTS

ENGINEERING AND MAINTENANCE DIVISION

SPECIFICATION PROCUREMENT FOR BUY AMERICA SPECIAL TRACKWORK

ASSEMBLY

FULLY GUARDED NO. 6 TURNOUT

FULLY GUARDED NO. 6 CROSSOVERS

STANDARD AREMA NO. 10 CROSSOVER

STANDARD AREMA NO. 12 CROSSOVER

May 2026

This document includes specifications for furnishing, fabricating, and delivering:

• Priority 1 - One (1) RH AREMA STANDARD #10 Crossovers (Braintree Track

5) and Two (2) LH AREMA STANDARD #10 Crossovers (Braintree XO and

Braintree Track 5) which consist of the following:

o Two (2) right-hand turnout packages, connecting rails, timbers/ties, and

OTM

o Four (4) left-hand turnout packages, connecting rails, timbers/ties, and OTM o Track Centers: Braintree Track 5- 17’, Braintree XO- 13’-6”

• Priority 2 - Two (2) RH Fully Guarded Modified AREMA # 6 Crossovers (Kendall, Tenean) which consist of the following:

o Four (4) RH guarded modified turnout packages with connecting rails, timbers/ties and OTM o Crossover Track Centers: Kendall (12’), Tenean (13’)

• Priority 3 - One (1) LH AREMA STANDARD #12 Crossover (Quincy St.) and

One (1) RH Fully Guarded Modified AREMA # 6 Crossover (Quincy St.)

which consist of the following:

o Two (2) No. 6 right-hand guarded modified turnout packages, connecting rails, timbers/ties, and OTM o Two (2) No. 12 left-hand turnout packages, connecting rails, timbers/ties, and OTM o Track Centers: 12’ for both crossovers

• Priority 4 - One (1) RTL RH Fully Guarded Modified AREMA # 6 Turnout panel packages

The crossovers shall consist of two (2) turnouts and all necessary connecting rails.

The turnouts shall include the curved and straight closure rails, rail bound manganese frog

(RTL), plates, switch points(curved/straight), switch plates, switch rods & components (no switch machine required), ties, cast chairs, cover guards (housetops), joint bars, guard rails and all other associated components per the latest edition of the AREMA specification and

AREMA Portfolio of Track work Plans 920-18 and MBTA drawing No. 510 and all associated trackwork plans.

All trackwork assemblies are to be Buy America. Trackwork assemblies are to be furnished, fabricated, and delivered based on the assign priority with Priority 1 being the highest priority. All trackwork assemblies will need to be delivered by April 2027.

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

1. American Railway Engineering and Maintenance-of-Way Association (AREMA):

a. Manual for Railway Engineering

b. Portfolio of track Plans.

2. American Society for Testing and Materials (ASTM)

a. A176, Standard Specification for Stainless and Heat- Resisting Chromium

Steel Plate, Sheet, and Strip.

b. Testing

i. 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.

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

iii. 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.

c. Inspection

i. Manufacturers shall retain services of an independent inspection company who shall inspect all aspects of the crossovers according to required specifications and approved shop drawings.

ii. The Engineer or his representatives shall always have free entry to the special trackwork manufacturing plants while the work for this project is undertaken.

iii. The Engineer or his representatives shall be provided with proper facilities and testing equipment to ensure that the special trackwork is as specified.

3. Submittals

a. Submit certified test reports from the manufacturer and/or the independent inspection approved by the Engineer establishing the properties of the special trackwork.

b. Submit shop drawings of all special trackwork. Each shop drawing set shall include a general plan for the entire project denoting all trackwork parts and trackwork pieces as may be required and plans for each trackwork part or piece. Drawings of trackwork pieces and parts shall include full descriptions of all critical dimensions.

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

d. 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.

e. Shop drawings for switch plates, switch rods and tie plates shall indicate all details and critical dimensions.

f. 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:

Materials

Engineer – Maintenance of Way

Massachusetts Bay Transportation Authority

Kthompson@mbta.com

1) Rails: Running rail which includes straight and curved closure rails within the turnout and all connecting rails within the turnout and between the turnouts shall be new 115#

RE, Head Hardened per the latest edition of the AREMA specifications and MBTA plans.

Restraining rail and guard rail for turnouts shall be new 132# RE, milled base, fully heat-treated, also per the latest edition of the AREMA specifications and MBTA plans. The

132# rail shall be drilled to allow spacer block assemblies in accordance with the MBTA plan #T-a-113053 and #305. The base of the 132# rail shall be milled / machined, per

MBTA Plan drawing # 305, for attachment to the 115# RE section running rail to provide the indicated flangeway opening(s) per MBTA Plan #T-a-113053. The adjustable spacer blocks, nut lock, nut plate and filler plates shall be either ductile iron conforming to

ASTM A –536 Grade 65-45-12 or malleable iron conforming to ASTM A-47 Grade 32510 per MBTA plan T-a- 113053 or approved equal. Restraining rail bolts, nuts, and washers for the spacer block assemblies shall be Huck 360 Grade 8 Hex Head Track Bolt as attached. Restraining rail bolt shall be torqued to 2250 ft. lb. per the manufacturer’s recommendation.

2) Switch: The switch shall be insulated with a curved head-hardened Sampson switch point and head-hardened Sampson undercut stock rail, a straight head hardened double switch point and head-hardened undercut stock rail unless noted otherwise.

Bolts for switch point strapping are to be huck bolts. Switch point lengths and layout are per attached MBTA drawing No. 510. Switch point and stock rail shall be per

AREMA drawing # 221-12, detail 5100. The switch shall be designed for uniform risers. Brinell hardness tests shall be performed within impact areas of the switch points, stock rails and frogs in accordance with ASTM E 10. The manufacturer shall provide documentation from an independent testing company that turnouts are constructed in accordance with the AREMA trackwork drawings and specifications and MBTA plans and specifications. Brinell hardness of 321-388 is required. Each switch shall be furnished complete, shall include manganese cover guard housing with cast chairs designed as double point stops except at the point of switch which cast chair shall provide adequate clearance for the attachment of switch point detector rods, all joint bars, boltless adjustable rail braces (which must allow for the installation of base mounted electrical switch heating units), cast steel heel blocks, stops, insulated adjustable gauge plate (1), screw spikes, bolts, nuts and washers and all other switch materials for a complete package. Jointed rail ends shall have one hole to be field drilled unless otherwise noted on drawing.

3) Switch plates: Boltless adjustable type modified to be compatible with resilient rail fastener system. 1” x8” insulated gauge plate; 1”x8” slide, heel and runoff plates milled for

¾” seats with Racor 2 bolt braces and Pandrol shoulders, where required. Switch plates shall be compatible with screw spikes. Refer to AREMA portfolio of plans 223-08, and 224-08

4) Switch Rods: Vertical insulated switch rods designed for a throw of 4 ¾” for the RTL.

Refer to AREMA Portfolio of Trackwork Plans 222-08. Switch rods shall be insulated with adjustment basket.

5) Turnout Frog: For RTL turnouts, the frogs shall be AREMA standard rail bound manganese steel frog (RTL). Frogs shall be designed as shown on AREMA Portfolio of Plans # 621-18, 622-09, 623-09, 624-09, MBTA plan No. 510 and any additional drawings or measurements provided by the MBTA. Provide rail bound manganese steel frogs with weld- on shoulder plates for use with spring clip fasteners. Frogs shall conform to the current AREMA Specifications for Special Trackwork, Section 100-08, and Article

M2. The following plans shall be referenced – 600-18, 601-18, 621-18. Manganese casting to be 3 shot explosive hardened following AREMA Portfolio of Plans 100-08 Section M2.7.

(a minimum of 352 BHN). The Castings are to be radiographic tested for internal soundness. Radiographic tests shall be done in conformance with the latest Issue of

ASTM Standards; E-94, E-142, E-446, E-186 and E-280. Manufacture frogs (arms and wings) from fully heat-treated rail.

6) Frog Plates: Frog plates shall be weld-on shoulder style as shown in the latest edition of the AREMA Portfolio of Trackwork Plans # 242-18. Plate drilling shall be 1” diameter to allow for 15/16” screw spikes for use on timber ties. The plates shall be ¾” thick. Weld-on shoulders are designed to use with spring clip fasteners (e-clip). Steel shall conform to A36 steel. Spring clip fasteners shall have a minimum vertical hold down force of

2750 lbs. each. Minimum static longitudinal slip per complete fastener with two fasteners in place shall be 2800 lbs.

7) Standard Tie plates: Standard tie plates shall be 15” by 8” rolled steel for resilient rail fasteners with screw spikes. Special tie plates, required when rail is skewed 8 degrees or more to the switch timber, shall have drilled rail seats and weld on shoulders for the attachment of the resilient spring steel, rail clips, including special clips required at all rail joints and insulated rail joints when assembled.

8) Standard Joints: Standard joint bar assembly shall consist of two (2) headless

36” long bars for 115# RE rail, as shown in the latest edition of the AREMA

Manual for Railway Engineering, Volume, Chapter 4, Part 1, pg. 4-1-10 with bar punching per pp. 4-1-15 and 4-1-16. Assemblies shall be furnished completely with oval neck bolts, square nuts and spring washers and material shall conform to the AREA “Specifications for High- Carbon Steel Joint Bars”, Specifications for Heat-treated Carbon Steel Track Bolts, and “Specifications for Spring Washers” as appropriate.

9) 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. 4-1-10; 4-1-11, part 2; pp. 4-2-9 through 4-2-

11, part 2; pp. 4-2-15 through 4-2-18 and part 2; 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.

10) Bond Insulated Joint Bars: See Attachment MBTA plan #325 for detail. Joint locations are to be determined during the shop drawing process.

11) Non-Insulated Joint Bars: Combination 132/115# insulated joint assemblies to be supplied as follows: 24” long, four-hole, dry bolted (non-bonded) design. Joint assemblies to include new, shop fabricated, alloy steel core, heavy-duty polyurethane clad bars. Complete with washer plates, friction fit cylindrical insulated bushings, 1” diameter A325 high strength heavy head track blots, hex nuts, hardened steel washers and 3/8” epoxy fiberglass end posts. Bars shall be compatible for installation with 115#

RE section rail and accompanying 132RE section restraining rail. Bars must provide a minimum of ½” clearance on each rail base for application of elastic rail fasteners. Bars are to be drilled per AREMA Manual for Railway Engineering, Volume I, pages 4-1-15 to

4-1-16, except as modified for the above base dimension of 3 -1/32”. Insulated joint assemblies are to be of a type manufactured by Portec, Allegheny or approved equal.

Joint locations are to be determined during the shop drawing process.

12) Timber Crossties: New 7”x 9”x 8’-6” crosstie shall be as specified in “Specifications for

Cross Ties”.

13) Switch Timber: New 7”x 9” switch timber to lengths as shown on the contract drawings shall be as specified in “Specifications for Switch Timber”.

14) Headblock Timbers: New 9”x9”x12’-6” headblock timber shall be as specified in

“Specifications for Switch Timber”. Headblock timbers shall be dapped 2” deep by 36” long.

15) 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) Rail lengths shall be subjected to a tolerance of plus or minus 1/8” inch at 60 degrees F

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

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

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

16) Tolerances:

a) Permissible variations in dimensions, fit shall be in accordance with the AREMA

Specifications.

b) Gauge dimensions shall be subject to a tolerance of plus or minus 1/16” inch, measured 5/8” inch below the top of rail.

c) Flangeway dimensions shall be subject to a tolerance of 0 under and 1/16” inch over, measured 5/8” 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.

e) Switch points and stock rails shall match abutting contours 1/32” inch or less over

75% or more along their entire length.

17) Markings and Identification:

a) Special trackwork shall be identified with markings in accordance with the AREMA

Specifications for Special Trackwork, except as specified.

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

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

ii) 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 manufacturer’s shop drawings.

iii) Shop marks and match marks shall be applied by means of paint markers of different colors to be distinguished. The marks shall be clear and legible to permit proper assembly in the field.

iv) 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 gage radius.

(6) The designation “special” or “standard”

(7) Identification tags shall be stainless steel in accordance with ASTM A 176

(8) The tags and their markings shall be large enough to permit field identification.

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 1:30 PM Monday through Friday). Coordinate with the MBTA before shipping products and materials.

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

Deliver to:

MBTA Rail Yard

100 Widett Circle, Boston MA, 02118

Or

MBTA Charlestown Yard Building 11

21 Arlington Ave

Charlestown, MA 02129

MASSACHUSETTS BAY TRANSPORTATION AUTHORITY

MAINTENANCE OF WAY DIVISION

TRACK MATERIAL SPECIFICATION

7”x 9”x 8’-6” Timber Railroad Ties

DESIGN

Crossties shall Grade 5, 7” x 9” x 8’-6”. Please refer to Requisition order form for quantity.

The length and thickness specified are minimum dimensions. Ties one inch

(1”) wider or thicker or over three inches (3”) longer at any point than the dimensions specified above will be rejected.

MATERIALS

Ties shall be Black Locust, Honey Locust, Red oak, White oak or Black

Walnut or approved equal.

All ties shall be in accordance with AREMA Specification for ties, except where modified herein.

MANUFACTURE

All ties shall be manufactured from sound, live timber and must be free of any defects that may impair their strength or durability as a timber tie, as further described in this section. Every effort is to be made to get the felled timber to mill and milled timber to treatment facility for seasoning as quickly as possible to avoid wood fiber infection.

All ties shall be straight, well sawn on all four (4) sides, but square at the ends, have top and bottom parallel and have bark completely removed. Any ties which do not meet the following characteristics of good manufacture will be rejected: A tie will be considered straight when a straight line from a point on one end to a corresponding point on the other end is no more than 1-1/2” from the surface at all points. The top and bottom will be considered parallel if any difference at the sides or ends does not exceed 1/8”. For proper seating of nail plate, tie ends must be flat, and will be considered square with a sloped end of up to 1/8”inch.

MBTA M.O.W. Division

Material Specification

July 2009 Page 1 of 4 Revision Date: 7/30/09

FOR REFERENCE

5.

6.

4.

All ties shall be free from the following defects:

1. Decay

Timber ties that show decay of any nature and ties that show stain from being left in the log too long will be rejected. “Blue stain” is not considered decay and is permissible in any wood.

2. Holes

Ties will be rejected if a large hole, or numerous holes with the net effect of a large hole, is present. A large hole is one exceeding one-half inch (1/2”) in diameter and three inches (3”) deep outside the sections of the ties between twelve inches (12”) from the end.

3. Knots

Ties will be rejected if a large knot, or numerous knots with the net effect of a large knot, is present. A large knot is a knot whose average diameter is greater than one-fourth (1/4) of the width of the surface of which it appears within the area of the tie between twelve inches (12”) from each end.

4. Shakes

Shakes greater than one-third (1/3) the width of the tie shall be cause for rejection of the tie.

5. Splits

A tie will be rejected if a split exceeds five inches (5”) long or one-half inch (1/2”) wide.

6. Slanting grain

A tie will be rejected if a slant in grain in excess of one (1) in fifteen (15) is present, except in the case of woods with interlocking grain.

7. Wane - Excessive wane will be cause for rejection of the tie. A maximum of 1” wane will be allowed in the rail bearing area of the tie.

July 2009 Page 2 of 4 Revision Date: 7/30/09

SEASONING

Crossties will be air seasoned prior to treatment. Ties shall be stacked for seasoning in accordance with AREMA Specifications, Chapter 3, Part 5, Section 6. Seasoning shall continue for at least twelve (12) months and no more than eighteen (18) months.

In the absence of air-seasoned crossties, the Vapor or Boulton drying process may be used with the permission of the Division Engineer or his designee.

Sufficient borer cores shall be taken of seasoned ties to determine that adequate drying has taken place so that ties may be satisfactorily penetrated with preservatives.

Prior to seasoning, all timber ties shall have nail plate anti-splitting devices applied at each end of the tie. Nail plates shall be Gang-nail, as manufactured by Portec, or approved equivalent, and shall be of at least 18-gauge galvanized steel conforming to ASTM A446, Grade4, and the galvanizing conforming to

ASTM A525. Dimensions shall be as recommended by manufacturer. One nail plate shall be positioned onto each end of the tie with the plate placed to cover the greatest area of splitting. Nail plates shall be applied by a mechanical device capable of squeezing the splits together bringing the tie back to its original dimensions prior to application.

TREATMENT

Timber tie treatment shall be retention of eight (8) pounds per cubic foot or refusal using the empty cell process in accordance with the latest standards of

AREMA Specifications, Chapter 30, part 3 paragraph 3.7. The standard for the creosote solution is as per AWPA specification P2-06.

Sufficient number of borings shall be taken after treatment to determine proper penetration.

July 2009 Page 3 of 4 Revision Date: 7/30/09

INSPECTION

Suppliers shall retain the services of an independent inspection company who shall inspect all ties after treatment. Inspection of ties shall be in strict accordance with the American Wood Preservers Association (AWPA)

Standard M-2.

Copies of inspection reports shall be sent to:

Engineer – Maintenance of

Way Building 2 Arlington Ave

Any ties found by the inspector to not meet this specification shall be rejected and not delivered to the MBTA.

SHIPMENT

Ties shall be stacked neatly and securely banded with a sufficient number of heavy-duty steel bands to prevent the ties from shifting while in shipment or being handled upon receipt. Refer to MBTA Drawings # 200 and 201

DELIVERY

Material shall be delivered via rail or road to the MBTA Rail Yard 100 Widett

Circle, Boston, MA 02118 or MBTA Charlestown Rail shop, 21 Arlington Ave, Charlestown, Massachusetts. Coordinate with the MBTA before setting up shipping and delivery. Notification of delivery is to be made two (2) business days in advance to the

Supervisor of Yard and Services, (617) 222-5290.

To be accepted, timber ties 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.

July 2009 Page 4 of 4 Revision Date: 7/30/09

MASSACHUSETTS BAY TRANSPORTATION AUTHORITY

SYSTEMWIDE MAINTENANCE AND IMPROVEMENTS

MAINTENANCE OF WAY DIVISION

SPECIFICATIONS

FOR

SWITCH TIMBER CROSSTIES

VARIOUS LENGTHS

JUNE 2018

I. MATERIAL

A. Switch ties shall be Black Locust, Honey Locust, Red oak, White oak or Black Walnut or approved equal.

B. All cross ties shall be in accordance with AREMA Specification for timber switch ties, except where modified herein.

II. DESIGN

A. Crossties shall be Grade 5, 7” x 9” x “Varies” per MBTA Drawing #201S. Please refer to

Requisition Order Form for quantity and lengths.

B. The length and thickness specified are minimum dimensions. Ties one inch (1”) wider or thicker or over three inches (3”) longer at any point than the dimensions specified above will be rejected.

III. MANUFACTURE

A. All ties shall be manufactured from sound, live timber and must be free of any defects that may impair their strength or durability as switch timber ties, as further described in this section. Every effort is to be made to get the felled timber to mill and milled timber to treatment facility for seasoning as quickly as possible to avoid wood fiber infection.

B. All ties shall be straight, well sawn on all four (4) sides, but square at the ends, have top and bottom parallel and have bark completely removed. A cross tie will be considered straight when a straight line along the top, from the middle of one end to the middle of the other end, is entirely within the tie, and when a straight line along a side, from the middle of one end to the middle of the other end, is no more than two inches (1 1/2”) from the top and bottom of the tie. The top and bottom will be considered parallel if any difference at the sides or ends does not exceed 1/8”.

D. All timber ties shall be free from the following defects:

1. Decay

Switch timber ties that show decay of any nature and ties that show stain from being left in the log too long will be rejected. “Blue stain” is not considered decay and is permissible in any wood.

2. Holes

Ties will be rejected if a large hole, or numerous holes with the net effect of a large hole, is present. A large hole is one exceeding one-half inch (1/2”) in diameter and three inches (3”) deep outside the sections of the ties between twelve inches (12”) from the end.

3. Knots

Ties will be rejected if a large knot, or numerous knots with the net effect of a large knot, are present. A large knot is a knot whose average diameter is greater than one- fourth (1/4) the width of the surface of which it appears within the area of the tie between twelve inches (12”) from each end.

4. Shakes

Shakes greater than one-third (1/3) the width of the tie shall be cause for rejection of the tie.

5. Splits

A tie will be rejected if a split exceeds five inches (5”) long or one-half inch (1/2”) wide.

6. Slanting grain

A tie will be rejected if a slant in grain in excess of one (1) in fifteen (15) is present, except in the case of woods with interlocking grain.

6. Wane - Excessive wane will be cause for rejection of the tie. A maximum of 1” wane will be allowed in the rail bearing area of the tie.

IV. SEASONING

A. Crossties will be air seasoned prior to treatment. Ties shall be stacked for seasoning in accordance with AREMA Specifications, Chapter 3, Part 5, Section 6. Seasoning shall continue for at least twelve (12) months and no more than eighteen (18) months.

B. In the absence of air-seasoned crossties, the Vapor or Boulton drying process may be used with the permission of the Division Engineer or his designee.

C. Sufficient borer cores shall be taken of seasoned ties to determine that adequate drying has taken place so that ties may be satisfactorily penetrated with preservatives.

D. Prior to seasoning, all switch timber ties shall have nail plate anti-splitting devices applied at each end of the tie. Nail plates shall be Gang-nail, as manufactured by Portec, or approved equivalent, and shall be of at least 18-gauge galvanized steel conforming to ASTM A446, Grade4, and the galvanizing conforming to ASTM A525. Dimensions shall be as recommended by manufacturer. One nail plate shall be positioned onto each end of the tie with the plate placed to cover the greatest area of splitting. Nail plates shall be applied by a mechanical device capable of squeezing the splits together bringing the tie back to its original dimensions prior to application.

V. TREATMENT

A. Switch timber tie treatment shall be retention of seven (7) pounds per cubic foot or refusal using the empty cell process in accordance with the latest standards of AREMA Specifications, Chapter 30, part 3 paragraph 3.7. The standard for the creosote solution is as per AWPA specification P2-06.

B. Sufficient number of borings shall be taken after treatment to determine proper penetration.

VI. INSPECTION

A. Suppliers shall retain the services of an independent inspection company who shall inspect all ties after treatment. Inspection of ties shall be in strict accordance with the American Wood Preservers Association (AWPA) Standard M-2.

Copies of inspection reports shall be sent to:

Engineer Maintenance of Way -Building 2

21 Arlington Ave.

B. Any ties found by the inspector to not meet this specification shall be rejected and not delivered to the MBTA.

VII. DELIVERY

A. To be accepted, all switch timber ties shall conform to this specification in all respects and are at the supplier’s risk until accepted at the delivery site. Ties that are rejected for non-compliance with this specification will be returned at the supplier’s expense.

B. Ties to be banded with 2” heavy duty steel bands to prevent the ties from shifting while in shipment or being handled upon receipt. No one bundle to exceed 5000 lbs.

C. Material shall be delivered via rail or road to the MBTA Rail Yard 100 Widett Circle, Boston, MA 02118 or MBTA Charlestown Rail shop, 21 Arlington Ave, Charlestown, Massachusetts. Coordinate with the MBTA before setting up shipping and delivery.

D. Notification of delivery is to be made two (2) business days in advance to the Supervisor of Yard Services, (617) 222-5290. All materials are to be shipped during the hours 7 AM to 1:30 PM Monday through Friday.

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DIVISION

ANTI-SPLITTING END PLATE FOR

WOODEN CROSS-TIES

9"

7"

Varies s

34"

9"

R

E F

HEADBLOCK TIE, DAPP " LONG BY 2" DEEP

9" X 9 ’-0"

TREATED HARDWOOD

NOTES:

1. TIE TO ADHERE TO MBTA TIE SPECIFICATION 9263.

2. DAP DESIGNED IN REFERENCE TO SWITCH MACHINE

CENTERLINE LOCATED 42" FROM NEAR MAINLINE GAUGE LINE.

12'-6"

12'-6"

9'-6"

12'-6"

36"

36"

M.O.W.

DIVISION

132 RE RESTRAINING RAIL

LRT

RTL

TRACK

STANDARDS

Huck Grade Track Bolt Assy

Effective:

Dec.

Huck Grade Hex Head Track Bolt Assy

Primary Features and Benefits

The Huck 360® Track Bolt is a high fatigue strength, vibration resistant, bolting system with Grade mechanical properties.

It has a unique shallow thread form that provides 5X to 10X fatigue improvement.

The is free spinning during fit up and the nut thread is very forgiving to any bolt thread damage caused by hole misalignment.

The can easily be installed and removed with either conventional hydraulic impact tools or with other high performance continuous drive torquing systems.

For those times when track maintenance is required, this unique fastener can, in many cases, be removed and reused with reliable results

Installation Instructions

Verify that the tool being used has the capability of producing the correct torque and that all settings are adjusted correctly.

Always refer to the manufacturer’s documentation for the correct settings and safe operating procedures of the installation equipment.

Begin installation, insert bolt into hole, add washer onto protruding threaded end.

Free spin nut onto bolt with round bearing surface of nut oriented toward the track surface.

Apply torque of ft.

lbs.

to nut side while holding bolt head with track wrench or head lock washer.

Continue tightening until tool stalls, socket and nut should come to a complete stop while tool is energized.

Move to next bolt in the local set.

Apply torque until the tool stalls.

Repeat as needed.

When the last fastener in the set is tightened, start again at first fastener in the local set and apply torque to each nut a second time to verify that all nuts have stopped turning when torque is applied.

The application of torque from the nut side is always preferred.

The nuts have a lubricated surface that assures better transference of torque into joint clamp.

As a last resort, if tooling clearance conditions exist, adjust torque to ft.

lbs.

and tighten from bolt head side using same sequence as above.

An alternative and preferred solution to torquing from the bolt head is to use a Thread Head (Stud).

The

Thread Head (Stud) assures that a nut will always be accessible to the torque tool.

Thread Heads are also helpful in the narrow crotch of low angle diamonds or when bolt ends are almost touching.

Refer to Huck part number

360THA-‐DT44X####

and360THAP-‐DT44X## for further details.

Note:

Huck Nuts are pre-‐coated with high performance Huck Guard coating and require no additional lubrication.

TRACK

STANDARDS

Huck Grade Track Bolt Assy

Effective:

Dec.

Recommended Maintenance

One maintenance retightening is recommended on bolts installed in diamonds and frogs that are new from factory.

This re-‐tightening should be scheduled between one and two months after the diamond or frog enters service.

This maintenance retightening is meant to help compensate for the surface wear (fretting) that commonly occurs between the mating surfaces of the castings, track, and misc.

components of frogs and diamonds that are newly in service.

A maintenance retightening is not as likely to be needed in aftermarket repairs where the frogs and diamonds have already accumulated service life sufficient to wear in the components.

Selection of Correct Bolt Length and Assembly Part Number

To determine the correct bolt length to use, measure the thickness of all track components that are to be fastened, Add 2.2” to that number.

Round that result up to the next whole number.

Insert that number in the place holder in the part number format below.

The part number is formatted as follows:

360HA-‐DT44X####

For example:

A

9” bolt will be

360HA-‐DT44X900.

A 16” bolt will be

360HA-‐DT44X1600.

Notes:

The number, 2.2” is equal to the height of the 1-‐3/8” Huck nut plus two of the bolt thread pitches.

This part has two trailing zeros at the end of the number in anticipation of a future need for fractional increments.

Each assembly will include one hex bolt

(360H-‐DT44X####),

one flat washer

(SW-‐R44X),

and one square nut

(360NS-‐R44).

Ordering Information

Direct all order inquiries to:

Alcoa Fastening Systems and Rings

Industrial Fastener Division

Imperial Drive

Waco, Texas 76712

Toll Free:

1-‐800-‐388-‐4825

(Choose Option for Customer Service)

When ordering Huck track bolts please make note of how you would like your parts packaged during shipping.

Would you like them palletized in bulk or would you like them packaged in small kits of to pieces for easy handling and unloading?

TRACK

STANDARDS

Huck Grade Track Bolt Assy

Effective:

Dec.

Stock Number Short Description Long Description

360HA-‐DT44X900

1-‐3/8" X 9" Huck Grade Track Bolt Nut and

Washer Assembly for use in frogs turnouts interlockers and diamonds

360HA-‐DT44X1000

1-‐3/8" X 10" Huck Grade Track Bolt Nut and

Washer Assembly for use in frogs turnouts interlockers and diamonds

360HA-‐DT44X1100

1-‐3/8" X 11" Huck Grade Track Bolt Nut and

Washer Assembly for use in frogs turnouts interlockers and diamonds

360HA-‐DT44X1200

1-‐3/8" X 12" Huck Grade Track Bolt Nut and

Washer Assembly for use in frogs turnouts interlockers and diamonds

360HA-‐DT44X1300

1-‐3/8" X 13” Huck Grade Track Bolt Nut and

Washer Assembly for use in frogs turnouts interlockers and diamonds

360HA-‐DT44X1400

1-‐3/8" X 14" Huck Grade Track Bolt Nut and

Washer Assembly for use in frogs turnouts interlockers and diamonds

360HA-‐DT44X1500

1-‐3/8" X 15" Huck Grade Track Bolt Nut and

Washer Assembly for use in frogs turnouts interlockers and diamonds

360HA-‐DT44X1600

1-‐3/8" X 16" Huck Grade Track Bolt Nut and

Washer Assembly for use in frogs turnouts interlockers and diamonds

360HA-‐DT44X1700

1-‐3/8" X 17" Huck Grade Track Bolt Nut and

Washer Assembly for use in frogs turnouts interlockers and diamonds

360HA-‐DT44X1800

1-‐3/8" X 18" Huck Grade Track Bolt Nut and

Washer Assembly for use in frogs turnouts interlockers and diamonds

360HA-‐DT44X1900

1-‐3/8" X 19" Huck Grade Track Bolt Nut and

Washer Assembly for use in frogs turnouts interlockers and diamonds

360HA-‐DT44X2000

1-‐3/8" X 20" Huck Grade Track Bolt Nut and

Washer Assembly for use in frogs turnouts interlockers and diamonds

360HA-‐DT44X2100

1-‐3/8" X 21" Huck Grade Track Bolt Nut and

Washer Assembly for use in frogs turnouts interlockers and diamonds

360HA-‐DT44X2200

1-‐3/8" X 22" Huck Grade Track Bolt Nut and

Washer Assembly for use in frogs turnouts interlockers and diamonds

TRACK

STANDARDS

Huck Grade Track Bolt Assy

Effective:

Dec.

360HA-‐DT44X2300

1-‐3/8" X 23" Huck Grade Track Bolt Nut and

Washer Assembly for use in frogs turnouts interlockers and diamonds

360HA-‐DT44X2400

1-‐3/8" X 24" Huck Grade Track Bolt Nut and

Washer Assembly for use in frogs turnouts interlockers and diamonds

360HA-‐DT44X2500

1-‐3/8" X 25" Huck Grade Track Bolt Nut and

Washer Assembly for use in frogs turnouts interlockers and diamonds

360HA-‐DT44X2600

1-‐3/8" X 26" Huck Grade Track Bolt Nut and

Washer Assembly for use in frogs turnouts interlockers and diamonds

360HA-‐DT44X2700

1-‐3/8" X 27" Huck Grade Track Bolt Nut and

Washer Assembly for use in frogs turnouts interlockers and diamonds

360HA-‐DT44X2800

1-‐3/8" X 28" Huck Grade Track Bolt Nut and

Washer Assembly for use in frogs turnouts interlockers and diamonds

360HA-‐DT44X2900

1-‐3/8" X 29" Huck Grade Track Bolt Nut and

Washer Assembly for use in frogs turnouts interlockers and diamonds

360HA-‐DT44X3000

1-‐3/8" X 30" Huck Grade Track Bolt Nut and

Washer Assembly for use in frogs turnouts interlockers and diamonds

360HA-‐DT44X3100

1-‐3/8" X 31" Huck Grade Track Bolt Nut and

Washer Assembly for use in frogs turnouts interlockers and diamonds

360HA-‐DT44X3200

1-‐3/8" X 32" Huck Grade Track Bolt Nut and

Washer Assembly for use in frogs turnouts interlockers and diamonds

Drawing Reference for:

-Braintree XO/Braintree Track 5 -

Standard AREMA #10 Crossover. Braintree XO 13'-6" track center; Braintree Track 5 17'-0" track center

DRAWING REFERENCE FOR: QUINCY ST

AND KENDALL RH #6 CROSSOVER

SW 50-1A

OR

SW 78A

DIRECTOR - MAINTENANCE OF WAY DATE DEPUTY DIRECTOR - MAINTENANCE OF WAY DATE

MASSACHUSETTS BAY TRANSPORTATION AUTHORITY

MAINTENANCE OF WAY DIVISIONISSUE DATE DESCRIPTION

ISSUEPLAN NO.SCALE:

DATE:

REVISION HISTORY

RL-002 1

NOT TO SCALE

JANUARY 2026

SW 50-1B & SW 78B

CROSSOVER NO.06-115RE RBM RH 132RE

GUARD RAIL, 17'-6" SWITCH GEOMETRY

TENEAN CROSSOVER

NO.06 115RE CROSSOVER

RL-006

NOT TO SCALE

JANUARY 2026

KThompson Highlight

KThompson Highlight