Addendum 2.pdf

TO: All Prospective Bidders

FROM: Maryland Transit Administration

SUBJECT: Addendum No. 2 IFB No.: T-1451-2240R Light Rail Central Business District 3 Interlockings and 10 Curves Rehabilitation

DATE: April 24, 2020

Effective this date is Addendum No. 2 (22 pages) to the subject IFB. This addendum changes the bid due date and time in the solicitation, adds a site visit, answers to vendor questions, and revisions to plans and specifications.

The Bidder shall acknowledge receipt of this Addendum by completing and returning this form with the bid submission package.

All other terms and conditions remain unchanged.

Sincerely, Heather Martin Heather Martin Procurement Officer

MDOT MTA

Acknowledgement of receipt of Addendum No. 2 to IFB No. T-1451-2240R

Vendor Name: ___________________________________________________________

Authorized Representative’s Signature Date

Contract # T-1451-2240R Light Rail Central Business District 3 Interlockings and 10 Curves Rehabilitation

Addendum #2

Please replace the following information in the Notice to Contractors:

4. BID DUE DATE & TIME

Sealed Bids addressed to the Maryland Transit Administration, Procurement Division, 6 St. Paul Street, Baltimore, Maryland 21202-1614, and marked “Bid for Contract No. T-1451-2240 R Light Rail Central Business District 3 Interlockings & 10 Curves Rehabilitation”, will be received at the above address until but not after 2:00 P.M. local time, June 2, 2020. Hand-delivered bids will be stamped in by Procurement staff, who will also give a bid receipt to the courier. Do not leave the office without a bid receipt. Any bids received after the date and time specified shall not be considered. No bids submitted through EMMA, fax, or email will be accepted.

Please add the following information in the Notice to Contractors:

2. A. SITE VISIT

The Administration will conduct a site visit on May 19, 2020 at 10:00am at the North Avenue Light Rail Station located at 320 North Avenue, Baltimore, MD 21217.

Please find the following responses to vendor questions as follows:

1. Please confirm that MTA will furnish the switch heater junction boxes.

All Switch Heater Junction Boxes will be provided by MTA under a separate Procurement Contract. See reference drawing R-304 for a summary of Junction Boxes to be provided.

2. Since this is a re-bid of a previous project, please provide a details sheet that describes the difference between this re-bid and the previous bid.

The procurement type was changed in addition to adjustments made to specifications.

The rebid documents will be only documents to be utilized for the contractor to determine their bid.

3. Please set up a site visit so that each site can be walked through thoroughly to help understand the complexity of this project and aid in technically responsible bidding.

A Pre-Bid site-visit will be held as indicated in this addendum. Keeping in mind the current requirements for social distancing the pre-bid meeting may need to be adjusted so monitor for any addendum posted.

4. The previous bid included a technical proposal. Please clarify why the technical proposal is not needed for this bid.

The technical proposal is not required as we have changed this to an Invitation for Bids and there isn’t an evaluation process.

5. The DBE goal for this project is 27%. This track project is a type of project that most all track contractors will want to and can perform 100% of the work. With some material being purchased by MTA, this reduces the amount of available DBE value through a DBE regular dealer. The 27% will increase the cost of this project to the MTA, please consider reducing the DBE value required.

The 27% goal is keeping in mind all non- trackwork related items (systems, civil) which have been historically outsourced to sub consultants. The prime contractor will still have the ability to perform all track related work by himself.

6. Has MTA procured or started the design drawings for the restraining rail for this project?

The Contractor will be procuring all rail.

If not, this project will NOT occur within the 260 CD requested time frame. Current lead times from restraining rail suppliers is 240 CD for completion of all components, with some suppliers stating over 365 CD for completion. Will MTA start procuring, or complete the design of this material itself and/or adjust the outage start time frame until no earlier than spring 2021 to ensure all materials will be available. The 260 CD noted in the contract is not enough time to procure the materials.

The contract duration will be evaluated, and an addendum will be provided.

7. Drawing CV-013 Note 3 references track stationing 79+69 to 79+81 which is shown as concrete, however, the note mentions plugging holes as if a timber tie. Is this area concrete ties or timber? If concrete, will a restraining rail sized plate with only running rail shoulders be required to replace the existing restraining rail plate? Who is responsible for providing this plate?

The ties for 79+69 to 79+81 are concrete. The existing concrete-tie CEN33C1 restraining rail and bracket/support system uses standard running rail fastenings and a separate bolted-on restraining rails bracket. The bracket shall be removed, and the bolt holes shall be plugged with an approved tie plugging compound or similar polyurethane or epoxy compound. The existing running rail fastening system shall remain.

8. Drawing CV-012 Note 1 and Note 11 have two locations on the right side of the page showing where existing DF track shimming occurs. It starts at 77+00 and 76+60 on each track and continues to the right side of the page where a double arrow makes it appear the work continues on. Please define where the shimming of the existing structure is to start and stop? Please also provide survey data or shimming chart that shows where and how much shimming is actually required?

The Contract should assume the DF fasteners on each rail will need to be shimmed. The Contractor shall provide the following shims. Extra shims shall be turned over to the

MTA.

1. 1/16”

2. 1/8”

3. 1/4"

Enclosures:

Specification changes Plan changes

-End of Addendum #2-

ADDENDUM NO.: 2

DATE: 04/07/2020

CONTRACT NO.: T-1451-2240R

The following additions, deletions, and modifications are hereby made a part of the Contract Documents for the LRT – Rehabilitation of 3 Interlockings and 10 Curves in the CBD Area, Contract No – 1451-2240R

Item No. Page Modification

I. SPECIAL PROVISIONS

1 Section 01110 Revised 1.03D

II. DRAWINGS

1 124 OF 165 / TP-005 North Ave – North, Traction Power Switch Heater

Interlocking Circuits (88C) Also attached are the answers to contractors' questions, if any.

SUMMARY OF WORK 01110-1

T-1451-2240R Addendum 02 SP-1

SECTION 01110

SUMMARY OF WORK

PART 1: GENERAL

1.01 GENERAL:

A. The Contractor's operations shall conform to all applicable State and Local regulations.

B. Wherever these Special Provisions refer to the Administration, they shall be understood to mean the Maryland Transit Administration (MTA).

Whenever reference is made to Engineer, it shall mean the Administration representative for the contract.

C. Submittals shall be made in accordance with SECTION 01300 Submittals.

1.02 CONTRACT DOCUMENTS: The work shall be performed in accordance with the following documents:

A. The General Provisions for Construction Contracts dated October 2001, issued by the Maryland Department of Transportation; and the Supplemental General Provisions issued by the Maryland Transit Administration; both contained in the Contract Specifications Book.

B. The Special Provisions, Divisions 1 through 18; the Notice to Contractors;

the List of Contract Drawings; and the various forms and exhibits; all contained in the Contract Specifications Book.

C. The Liability Insurance Requirements; and the MTA Project Safety Plan;

all issued by the Maryland Transit Administration of the State of Maryland Department of Transportation and contained in the Contract Specifications Book.

D. The Contract Drawings, Standard Plates and Reference Drawings, contained in the Contract Specifications Book or bound separately in the Contract Drawings Books.

1.03 CONTRACT DESCRIPTION:

A. This Contract is for the reconstruction of three interlockings and restraining rail and concrete tie replacement along segments of curved track on the Central Light Rail Line and Penn Station Extension at the following locations:

1. North Avenue Interlocking – North

SUMMARY OF WORK 01110-2

T-1451-2240R Addendum 02 SP-2

2. North Avenue Interlocking – South

3. Mount Royal Interlocking and adjacent curves

4. Site A - Curves N/E 23, N/E 25, N/W 22, and N/W 21 located south of the North Avenue Interlocking – South

5. Site B - Curve P/S 3 located between Mount Royal Interlocking and Penn Station

6. Site C - Curves S/E 1, S/E 2, S/W 1, S/W 2 and P/T 1 located north of Camden Yards Station.

B. The work at each location involves, but is not limited to the following:

1. North Avenue Interlocking - North

a. Demolition of mainline ballasted special trackwork on timber ties. This work includes the removal and disposal of all existing special trackwork, and ballast, within the limits of construction indicated on the Contract Drawings and delivery to an MTA designated facility of existing switch machines, complete with hardware and rods. Demolition includes the following special track work units:

(1) Mainline Turnout No. 88-3A, which is an right hand

No. 8 turnout.

(2) Mainline Turnout No. 88-1, which is an right hand

No. 8 turnout.

(3) Mainline Turnout No. 88-3B, which is an left hand

No. 8 turnout.

b. Demolition of existing standard ballasted track on wood ties, within the limits shown on the Contract Drawings.

This work includes removal and disposal of the existing timber ties, rail fasteners and ballast.

c. Removal of existing head block timber switch ties for

Mainline Turnouts Nos. 91-1 and 91-3.

d. Furnishing and installing new head block timber switch ties for Mainline Turnouts Nos. 91-1 and 91-3.

e. Demolition, removal, disposal of existing curbing, pedestrian grade crossing and underdrain as indicated in the Contract Drawings.

SUMMARY OF WORK 01110-3

T-1451-2240R Addendum 02 SP-3

f. Furnish and installation of ballast curb, underdrain, pedestrian grade crossing and stormwater management storm filter structure.

g. Conversion of existing drainage inlet to junction box.

h. Installation of 12” RCP storm drain pipe

i. Installation, maintenance during construction, and removal of erosion and sediment control measures in accordance with MDE requirements.

j. Demolition, removal and disposal of an existing OCS structure pole and foundation.

k. Installation of special trackwork consisting of two (2) No. 8

LH Turnouts and one (1) No. 8 RH Turnout ballasted complete including all required ballast, concrete switch ties, special trackwork, signal cabling, electric switch layouts and equipment, crib heaters and switch heaters, crib and switch heater cabling and equipment, traction power cabling and equipment, and other facilities and systems as indicated by the Contract Drawings and the Special Provisions.

l. Removal of old, and in installation of new track heaters and track switch machines at Mainline Turnout Nos. 91-1 and 91-3. Including all ballast and crib heaters, as required in Contract Drawings. Cables, junction boxes, and pedestals for heater elements shall remain and be protected for re-use with new heater elements. Heater elements and switch machines shall be supplied by the MTA to the contractor for installation.

m. Installation of new switch machines for all reconstructed switches, including complete hardware and rods.

n. Furnishing and installing Ballasted Track, which consists of running rails, restraining rails, concrete ties, and OTM’s as indicated on the Contract Drawings. Restraining rail concrete ties with fasteners will be provided by MTA.

o. Reconfigure existing 2-Wire OCS on the northbound and southbound tracks, and reconfigure existing Single Wire OCS on the crossover tracks, including furnishing and installing new OCS pole and foundation, new support and

SUMMARY OF WORK 01110-4

T-1451-2240R Addendum 02 SP-4 registration devices and assemblies, and modifying/adjusting existing OCS assemblies to remain.

p. Track to earth resistance testing.

q. Power and Signal Bonding test.

r. Catenary to Earth Resistance Testing

2. North Avenue Interlocking - South timber ties. This work includes the removal and disposal of all existing special trackwork, and ballast, within the limits of construction indicated on the Contract Drawings and delivery to an MTA designated facility of existing switch machines, complete with hardware and rods. Demolition

(1) Mainline Turnout No. 83-1B, which is a left-hand

No. 8 turnout.

(2) Mainline Turnout No. 83-3, which is a right-hand

No. 8 turnout.

(3) Mainline Turnout No. 83-1A, which is an No. 5 equilateral turnout.

b. Demolition of existing standard ballasted track on wood ties, within the limits shown on the Contract Drawings.

This work includes removal and disposal of the existing timber ties, rail fasteners and ballast.

c. Demolition, removal of existing pedestrian grade crossing as indicated in the Contract Drawings.

d. Furnish and installation of pedestrian grade crossing.

e. Installation, maintenance during construction, and removal

f. Installation of special trackwork consisting of one (1) No. 5

Equilateral Turnout, one (1) No. 8 RH Turnout and one (1) No. 8 LH Turnout ballasted complete including all required ballast, concrete/timber switch ties, special trackwork, signal cabling, electric switch layouts and equipment, crib

SUMMARY OF WORK 01110-5

T-1451-2240R Addendum 02 SP-5 heaters and switch heaters, crib and switch heater cabling and equipment, traction power cabling and bonding, signal bonding and other facilities and systems as indicated by the Contract Drawings and the Special Provisions.

g. Installation of new switch machines for all reconstructed switches, including complete hardware and rods.

h. Track to earth resistance testing.

i. Power and Signal Bonding test.

3. Mount Royal Interlocking timber ties. This work includes the removal and disposal of all existing special trackwork, and ballast, within the limits of construction indicated on the Contract Drawings and delivery to a MTA designated facility of existing switch machines, complete with hardware and rods Demolition

(1) Switch 70-1A, Switch 70-3 and P/S crossing which includes two right hand turnouts and a crossing as a single unit.

b. Furnishing, installation, maintenance during construction, and removal of erosion and sediment control measures in accordance with MDE requirements.

c. Installation of ballasted special trackwork complex consisting of two (2) No. 8 RH turnouts and a crossing, complete including all required concrete switch ties, special trackwork, signal cabling, electric switch layouts and equipment, crib heaters and switch heaters, crib and switch heater cabling and equipment, traction power cabling and bonding, signal bonding and other facilities and systems as indicated by the Contract Drawings and the Special Provisions.

d. Installation of new switch machines for all reconstructed switches including removing and installing Switch 70-1B, including complete hardware and rods.

e. Installation of new direct fixation fasteners and repair of existing concrete plinths, removing and reinstalling existing rail and special work steel components within the direct

SUMMARY OF WORK 01110-6

T-1451-2240R Addendum 02 SP-6 fixation area, including removing and reinstalling existing or new, signal cabling, electric switch layouts and equipment, crib heaters and switch heaters, crib and switch heater cabling and equipment, traction power cabling, and other facilities and systems as indicated by the Contract Drawings and the Special Provisions.

f. Furnishing new track ballast for all reconstructed special trackwork.

g. Track to earth resistance testing.

h. Power and Signal Bonding test.

4. The work for the restraining rail and concrete tie replacement includes, but is not limited to, the following:

a. Installation, maintenance during construction, and removal

b. Removal and disposal of existing running rails, restraining rails, restraining rail brackets, concrete ties, connecting hardware, and other track materials within designated track limits.

c. Removal and disposal of ballast to the limits shown on the

Contract Drawings.

d. Handling and installing new restraining rail concrete ties furnished by the Administration complete with new e-clips, insulators, and tie pads. A portion of the ties for curve P/S 3 will be furnished by the contractor.

e. Furnishing, installing, and pre-curving, 115RE restraining and running rails as shown on the Contract Drawings and specified herein. A portion of Curves N/E 25 and N/W 22 are located on existing open-deck timber track and will require insulated tie plates to be furnished by the Contractor. A portion of Curves N/E 23 and N/W 21 are located on Direct Fixation track. The existing U69 restraining rail will be modified as noted on the Contract Drawings and the existing fastening system will be removed, stored and reused.

f. Furnishing and installing separator blocks, hardware, and joint bars required for restraining rail assembly; modifying

SUMMARY OF WORK 01110-7

T-1451-2240R Addendum 02 SP-7 rail base of restraining rail to form restraining rail assembly as shown on the Contract Drawings and specified herein.

g. Thermite welding running rail strings to form continuous welded rail (CWR). Ultrasonic testing of welds in accordance with Section 05651 Rail Welding.

h. Lining and surfacing tracks including replenishment of ballast stone and restoration of track cross section.

i. Track-to-Earth resistance testing in accordance with

Section 16647.

1.04 COMPLETION TIME AND LIQUIDATED DAMAGES:

A. Pursuant to General Provisions Articles GP-8.02 and GP-8.03, commence work on or before the date specified in the Notice to Proceed (NTP) and complete the specified portions of the work within the time specified in the table below.

B. In the event that the Contractor fails to complete the specified work within the specified number of days after Notice to Proceed, with the exception of extensions granted by change order, liquidated damages in the amount specified in the table below will be assessed pursuant to General Provisions Article GP-8.09 for each calendar day the completion of the specified work is delayed. The Contractor shall pay to the Administration the applicable amount specified and pursuant to General Provisions Article GP-8.09 as liquidated damages for every additional calendar day in excess of the number of days prescribed. The Administration may deduct the sum of liquidated damages from any monies due or that may become due the Contractor under the Contract, or if such monies are insufficient, the Contractor or sureties thereof shall pay to the Administration any deficiency within 30 calendar days.

C. A total of 60 calendar days each for Track 1 (N/E) and Track 2 (N/W) single-track operation time has been allotted for on-track reconstruction work in this Contract At the completion of construction during the track outages, the Contractor shall return the tracks to the Administration in such condition as will allow the safe operation of trains through the site on all tracks.

D. For every hour or portion of an hour that the return of the work site to the

Administration is delayed, a penalty $250 per hour will be assessed to cover the costs of the Administration’s implementation of replacement bus operations in lieu of operating trains and other costs incurred by the Administration due to the delay in returning the tracks to service.

SUMMARY OF WORK 01110-8

T-1451-2240R Addendum 02 SP-8

MILESTONE WORK ITEM

NUMBER

OF

CALENDAR

DAYS

LIQUIDATED

DAMAGES

PER HOUR

LIQUIDATED

DAMAGES

PER

CALENDAR

DAY

1 Installation of all mainline track reconstruction work at North Avenue- North, North Avenue- South, Mount Royal and all restraining rail locations, including all applicable civil and drainage installation, trackwork, signaling and traction power installation, during single track operations.

Work on the Penn Line extension is included with the work for Track 1 and Track 2.

60 Calendar Days each for Track 1 and Track 2

$250.00 -

2 Completion of All Contract Work 260 days1 - $1755.00

1. The contract duration will be revaluated at NTP.

1.05 COMPLETION TIME AND OTHER SCHEDULE REQUIREMENTS:

A. Pursuant to Article GP-8.03 of the General Provisions, commence work on or before the date stipulated in the Notice to Proceed (NTP) and complete the entire work within the number of calendar days specified in 1.04 above.

B. Train access to the MTA North Avenue Light Rail maintenance yard shall be maintained at all times during single-track operations, as shown in the Suggested Sequence of Construction Contract drawings.

C. Upon confirmation of start of single-track operation date, the finish date of the single-track operation will be locked in. If circumstances necessitate a schedule delay of a proposed single-track operation either due to Administration, Contractor, or a third-party requirements, the schedule changes will be made only with the authorization of the Administration. Should the change be required due to the Contractor’s lack of preparedness, and this change results in a delay to the start of or the completion of a milestone, liquidated damages will be assessed in

SUMMARY OF WORK 01110-9

T-1451-2240R Addendum 02 SP-9 the amount stipulated in 1.04 D of this Section, for the milestone(s) that are not achieved. Should the change be necessitated based on causes outside of the control of the Contractor, the Contractor will be responsible to develop schedule acceleration or work around schedule to minimize the impact of the change. In the case of acceleration or work around by the Contractor due to changes made by the Administration in the shutdown, such changes will be cost and schedule compensable subject to negotiations with the Administration.

D. Other schedule requirements are given in Section 01300 Submittals.

E. Before work on the track reconstruction begins, the Contractor may, at their option, prepare and secure the construction staging and material storage sites indicated on the Contract Drawings and as follows. The Contractor shall provide any additional temporary staging and material storage areas that are necessary, if the areas shown are not sufficient to complete the work in this Contract.

1.06 CONTRACTOR REPRESENTATIVES:

A. Designate in Writing within five (5) days after receiving the Notice to Proceed (NTP), the name, official mailing address and telephone number of the Contractor's representative having complete authority to represent and to act for the Contractor.

1.07 LIABILITY INSURANCE REQUIREMENTS:

A. MTA has chosen to provide Workers' Compensation, General Liability, Excess Liability, Builders Risk, Pollution Liability and Railroad Protective coverage on behalf of contractors and subcontractors working on this project. This approach to project insurance is commonly called a wrap-up or owner controlled insurance program (OCIP). Specific information regarding Liability Insurance Requirements are contained in the Contract Specification Book. (See Table of Contents for location of this information.)

B. Contractors and subcontractors are to bid work for this project net of insurance (i.e., The Cost of Workers’ Compensation, General Liability, Excess Liability, Builders Risk, Pollution Liability and Railroad Protective applicable to the work site is not be to included in the bid price). All bidders must complete the Insurance Premium Worksheet and forward to MTA with the rest of your bid package. The Premium Worksheet is included in the bid package as form I, Exhibit A.

This form should include the Contractor's work as well as the work of all subcontractors included in the initial bid. The insurance premium shown on this form, or the pro rata portion thereof, will be added to the base bid in the event you are excluded from the wrap-up program or the program is

SUMMARY OF WORK 01110-10

T-1451-2240R Addendum 02 SP-10 terminated mid-term.

WARNINGS:

A. The Contractor is notified that the MTA Light Rail Revenue Service will be operating under a single track operation during construction as shown in the Contract Drawings. Light Rail traffic will continue in and out of the North Avenue Maintenance Yard.

B. The Contractor is notified that there are overhead traction power lines that cross over proposed work areas in various locations and sensitive wayside signals equipment located in the proximity of proposed work.

C. The Contractor is notified that there are, communications and signals duct banks and conduits located in the proximity of proposed work. The Contractor shall locate any conflicting underground conduits and shall coordinate with Light Rail Systems Maintenance to determine required actions to relocate and or protect the conflicting utilities.

D. Upon completion of the proposed work, the Contractor shall coordinate with Light Rail System Maintenance to test all systems and facilities to restore Light Rail service to the satisfaction of the MTA.

1.08 STAGING AREAS:

A. A staging area within MTA Right-of-Way is shown on the Contract

Drawings and in Appendix I. The Contractor is responsible for securing and maintaining the staging area for the duration of construction. All costs, contingencies, permits, and agreements related to the acquisition and use of addi t ional proposed staging areas shall be the Contractor’s responsibility.

Parking facilities for Contractor’s personnel shall also be the Contractor’s responsibility.

1.09 COORDINATION WITH OTHER CONTRACTORS:

A. The Contractor is herein notified that no other Contracts and Contractors associated with MTA Light Rail Systems and Maintenance of Way, Baltimore City, and SHA are anticipated to be present in the project area during the construction period. However, the Engineer may request the Contractor to share access and possibly use the Contractor’s mobilization areas should the situation arise. Where this coordination results in restriction to the Contractor’s work site access, the Contractor shall provide for workarounds to allow the continuance of construction. These workarounds shall not constitute a basis for a Contractor delay or extension claim or for additional cost to the Administration in any way.

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T-1451-2240R Addendum 02 SP-11

1.10 PAYMENTS TO CONTRACTORS:

A. By submitting a response to this solicitation, the Bidder agrees to accept payments by electronic funds transfer unless the State Comptroller's Office grants an exemption. Specific information regarding electronic funds transfer requirements and how to register for it are contained in the Contract Specification Book (See Table of Contents for location of this information.)

1.11 ADMINISTRATION FURNISHED PRODUCTS:

A. The Administration will furnish the following materials for the Contractor to install in this Contract. The Contractor shall load, transport, and unload all these materials to the selected worksites that they will be installed in, at no additional cost to the Administration.

B. The Contractor shall accompany the Engineer to inspect these materials at their delivery sites prior to release of them by the Administration to the Contractor for this Contract. The Engineer will coordinate with the Contractor on the date(s) for the inspections of these materials. At these inspections, the Contractor shall verify that all the materials are accounted for, in good condition, and in sufficient quantity for their installation in this Contract, or notify the Engineer in writing of any noted deficiencies in condition or quantity for these materials.

C. Special Trackwork, and Concrete Switch Ties:

1. Special trackwork, and concrete switch ties will be furnished under MTA Contract 1472-0340

2. Special trackwork, concrete switch ties and standard concrete ties will stored at an MTA material storage site within 15 miles of the project, as directed by the Engineer.

3. The Administration will furnish the following related materials:

a. North Avenue – North mainline No. 8 right hand turnout 88-1, ballasted, concrete ties, including:

(1) Special trackwork steel.

(2) Concrete switch ties.

(3) All required plates and fasteners.

b. North Avenue – North mainline No. 8 left hand turnout 88- 3A, ballasted, concrete ties, including:

SUMMARY OF WORK 01110-12

T-1451-2240R Addendum 02 SP-12

(1) Special trackwork steel.

(2) Concrete switch ties.

(3) All required plates and fasteners.

c. North Avenue – North mainline No. 8 left hand turnout 88- 3B, ballasted, concrete ties, including:

(1) Special trackwork steel.

(2) Concrete switch ties.

(3) All required plates and fasteners.

d. North Avenue – South mainline No. 8 left hand turnout 83- 1B, ballasted, concrete ties, including:

(1) Special trackwork steel.

(2) Concrete switch ties.

(3) All required plates and fasteners.

e. North Avenue – South mainline No. 8 right hand turnout 83-3, ballasted, concrete and timber ties, including:

(1) Special trackwork steel.

(2) Concrete switch ties.

(3) Timber switch ties

(4) Timber head block ties

(5) All required plates and fasteners.

f. North Avenue – South mainline No. 5 equilateral turnout 83-1B, ballasted, concrete ties, including:

(1) Special trackwork steel.

(2) Concrete switch ties.

(3) All required plates and fasteners.

g. Mount Royal – two No. 8 turnouts (70-1A and 70-3) and crossing including:

(1) Special trackwork steel.

SUMMARY OF WORK 01110-13

T-1451-2240R Addendum 02 SP-13

(2) Concrete switch ties.

(3) All required plates and fasteners.

h. Mount Royal Direct Fixation

(1) Standard and special trackwork fastener bodies

(2) All required plates and fasteners except where noted on the Contract Drawings.

D. Switch and Crib Heater Materials:

1. Switch and crib heater materials will be furnished from MTA Contract T-1472-2640

2. Switch and crib heater materials will be delivered to a MTA material storage site within 15 miles of the project, as directed by the Engineer.

3. The Administration will furnish the following related materials:

a. Switch point heater sets

b. Switch crib heater sets

E. Switch Machines and Switch Operating Layouts:

1. Electric switch machines and operating layouts will be furnished from MTA Contract T-1472-2440.

2. Electric switch machines and operating layouts will be delivered to a MTA material storage site within 15 miles of the project, as directed by the Engineer.

3. The Administration will furnish the following related materials:

a. Operating rod assemblies

b. Lock rod assemblies

c. Point detector rod assemblies

F. Traction Power and Train Control Cables:

1. Traction power and train control cables will be furnished from MTA Contract MTR-18-004-EQ.

2. Traction power and train control cables will be delivered to a MTA

SUMMARY OF WORK 01110-14

T-1451-2240R Addendum 02 SP-14 material storage site within 15 miles of the project, as directed by the Engineer.

3. The Administration will furnish the following related materials:

a. 1/c 500 kcmil 127x tinned copper

b. 1/c #6 19x tinned copper

c. 3/c #8 19x tinned copper

d. 12/c #14 tinned copper

e. 2/c plex #6 19x tinned copper

G. Restraining Rail Concrete Ties

1. Monoblock Concrete Restraining Rail Tie Assemblies for track with 115 RE rail and 115 RE restraining rail in accordance with the Restraining Rail Concrete Tie details shown on the Contract drawings. Ties will be furnished with:

2. Pandrol series e-2055 rail clips, galvanized.

3. Rail clip insulators

4. Rail seat pads, including:

a. One (1) Pandrol 7028E6 6.5 mm pad

b. One (1) Top Notch (Press-Seal Gasket Corp.) No. RR- 00996 custom ¼” x 7 ½” x 13.56” HDPE pad for the running rail/restraining rail seat

5. Embedded rail fastening shoulders (Pandrol 5274, or equal)

1.12 WORK SEQUENCE:

A. The Contractor is responsible for the sequencing of activities as necessary to satisfactorily complete all project work within the Contract period. The Contractor’s sequencing shall be presented in the baseline construction schedule as specified in Section 01300: Submittals. The Contractor is notified herein that additional work site limitations and restrictions exist. These are associated with, but not limited to, the following:

1. Light Rail Operations

2. Pedestrian operations at the work site.

3. Environmental Controls

SUMMARY OF WORK 01110-15

T-1451-2240R Addendum 02 SP-15

4. Safety and Quality Controls

5. Weather

The Contractor’s sequencing shall incorporate all restrictions associated with these elements. Each is more thoroughly elaborated upon in this specification.

1.14 CONSTRUCTION PARAMETERS:

A. The traction power and signaling disconnections will precede the work of the Contract in the work area and the reconnection and testing of these facilities will follow the Contractor's operations in the work area before work will be considered complete and the tracks ready for normal operations.

B. The Contractor will be held responsible to see that his employees enter upon Administration property through points of access approved by the Administration. Operations within the property shall be confined to the areas designated by the Engineer.

C. The Contractor shall provide adequate temporary lighting if necessary, during the Construction operation. The illumination level shall meet all safety requirements and shall provide adequate lighting, not less than 10 foot candles, necessary for safety and quality workmanship.

D. Upon completion of work and before final payment is made, the Contractor shall remove all machinery, equipment, surplus materials, false work, rubbish, and any and all other property of the Contractor or his subcontractors and shall leave the property in a condition satisfactory to the Engineer.

PART 2: PRODUCTS

NOT USED

PART 3: EXECUTION

NOT USED

SUMMARY OF WORK 01110-16

T-1451-2240R Addendum 02 SP-16

PART 4: MEASUREMENT AND PAYMENT

4.01 SUMMARY OF WORK:

A. Summary of Work will not be measured for payment.

B. Summary of Work will not be paid for directly but will be considered incidental to the appropriate work item.

END OF SECTION

EXISTING MARYLAND MTA DRAWING

DRAWING FOR REFERENCE ONLY.

LOCKED AND TAGGED OUT.

SYSTEM. DISCONNECT SWITCH SHALL BE OPENED,

OPERATIONS TO DE-ENERGIZE SWITCH HEATER

CONTRACTOR SHALL COORDINATE WITH MTA 4.

SWITCH HEATER CASES.

NO CHANGES WILL BE MADE AT THE EXISTING 3.

EXISTING CABLES TO NEW HEATER ELEMENTS.

THE CONTRACTOR SHALL TEST AND RECONNECT

AFTER CONSTRUCTION IN THIS AREA IS COMPLETED 2.

CONSTRUCTION.

CONSTRUCTION ZONE AND PROTECT DURING

SHALL PULL CABLES BACK OUT OF THE

OF THIS CASE ARE TO REMAIN. THE CONTRACTOR

COMPLETENESS. SWITCH HEATER CABLES FED OUT

THIS DRAWING IS BEING SUPPLIED FOR 1.

CONTRACTOR NOTES:

11/18/202112705

SWITCH HEATER INTERLOCKING CIRCUITS (88C)

FEBRUARY 2020

MJG

TMS

MJG

APPR

TP-005

124NTS

NORTH AVE - NORTH, TRACTION POWER

PROFESSIONAL CERTIFICATION

License No. Expiration Date A P P

R C

H E

C K

D R

A W

N D

E S

G N

NO. DESCRIPTION

REVISIONS

BY DATE

DATE: SCALE: OF

DRAWING NO.

CONTRACT NO.

SHEET NO.

c p w w o r k in g m t a p w g f ja n n ic e d e a t s d p

O C .d g n the State of Maryland engineer under the laws of am a duly licensed professional approved by me, and that I documents were prepared or

I hereby certify that these

LRT - REHABILITATION OF 3 INTERLOCKINGS

AND 10 CURVES IN THE CBD AREA

Maryland

T-1451-2240R

T

ER

RY

ALLEN SHANTZ

N

o. 127

P R

O F E

S

SIONAL E

NG

IN

E E

R

S T A

T E

OF MARYLA

N D

2 SHEET REPLACEMENT 4/2020MJG