18-064 - Addendum No. 2_Advantage.pdf

WUD No. 18-064 Addendum No. 2 AD 2-1 Issued: 04/28/2021

ADDENDUM NO. 2

PALM BEACH COUNTY WATER UTILITIES DEPARTMENT

REPUMP STATION NO. 8310 UPGRADES AND IMPROVEMENTS

PROJECT NO. WUD 18-064

TO ALL BIDDERS AND OTHERS CONCERNED:

Bidders/Contractors submitting proposals for the above referenced project shall take note of the following clarifications to the Contract Drawings and Specifications that shall become a part of the contract documents.

BID DOCUMENTS (Due May 5, 2021)

Note: Bidder must acknowledge Receipt of Addendum on Bid Form - Page 3 of Contract Documents.

Dated this 28th day of April 2021

Palm Beach County Water Utilities Department

Henry Melendez, P.E.

PLEASE ACKNOWLEDGE RECEIPT OF ADDENDUM NO. 2 (PAGES AD 2-1 THROUGH

AD 2-7) BY SIGNING BELOW – EMAIL to hmelendez@pbcwater.com OR FAX TO

561-493-6113 IMMEDIATELY.

Signature

Title

Company

WUD No. 18-064 Addendum No. 2 AD 2-2 Issued: 04/28/2021

GENERAL (NOT APPLICABLE)

REVISIONS TO FRONT END DOCUMENTS (NOT APPLICABLE)

REVISIONS TO TECHNICAL SPECIFICATIONS

1. Section 05 50 59 Premanufactured Booster Pump Skid, Paragraph 1.6.B.1, first line – delete the word and number “two (2)” and replace with the word and number “three (3)”. A revised page 05 50 59 - 3 is attached for insertion in the Specifications.

2. Section 14 60 00 CRANES AND HOISTS has been added to the project. Please see attached specification section.

a. Please add Division 14 – CONVEYING EQUIPMENT and Section 14 60 00

CRANES AND HOISTS to the Table of Contents for the project.

REVISIONS TO DRAWINGS

1. Attached hereto is the revised Cover Sheet (Drawing G-1) for the project.

A. The drawing was revised to include the street address of the site in the Location Map inset.

B. The drawing was also revised to change the name of the contact person at Baxter & Woodman, Inc.

2. Attached hereto are revised Drawings G-2, C-2 through C-4, M-1 through M-3, S-1, S-2, S-5, S-10, S-11, S-13, E-400, and E-700, which include specific revisions. All drawing revisions have been clouded and tagged. The attached drawings replace the previous Bid Set versions of the same Drawings, and shall be utilized during the preparation of bids.

CONTRACTOR QUESTIONS/COMMENTS SENT TO PBCWUD

1. Question/Comment: Electrical Demolition Note 11 on Dwg. E-300 states the generator currently located on site is not intended to remain on site as a permanent generator. During site visit, there were two generators, one trailer mounted and one mounted on top of a belly tank at location where note 11 points to. Please confirm neither generator is intended to be on site permanently and Contractors are to provide a price for furnishing and installing a new generator and ATS for this project. If new generator and ATS are to be provided for this project, please provide specs on what is required as it is missing from the technical specs.

Response: Electrical Demolition Note 11 on Drawing C-300 is correct. The generator with the belly tank is to be moved out of the Contractor’s work area, where it will be picked up by PBCWUD.

The trailer-mounted generator will be moved by PBCWUD or others. Neither generator is intended to be on site permanently.

PBCWUD is purchasing a generator to be installed by the Contractor – see General Information Note 5 on Drawing G-2 (Sheet 2 of 43). The Contractor is NOT purchasing the generator. Section 26 32 13 of Specifications is for the Contractor’s information and reference for installation of the generator. See Drawing E-400, Note 13 for ATS location and riser diagram on Drawing E-600 for ATS specifications.

WUD No. 18-064 Addendum No. 2 AD 2-3 Issued: 04/28/2021

2. Question/Comment: General Electrical Note 2 on Dwg. E-300 describes what equipment is to be salvaged and delivered to the PBCWUD. Please advise what is to be done with the two generators (one floor mounted and one trailer mounted)? Will those be the Contractor’s responsibility to deliver to PBCWUD or are Contractors only required to relocate the floor-mounted unit? If delivery by Contractor is required, will the County have means of offloading the generator at the delivery point or will the Contractor be responsible for this?.

Response: The floor-mounted generator with the belly tank is to be moved out of the Contractor’s work area, where it will be picked up by PBCWUD. The trailer-mounted generator will be moved by PBCWUD or others. The Contractor is not responsible for delivery of the either generator to

PBCWUD.

3. Question/Comment: Section A on Dwg. M-1 appears to require demolition of the entire pile length, approx. 7ft long. Please advise how many piles are in this slab. Please confirm the length of the piles are 7ft long. If piles are longer, can they be cut off at 7ft?

Response: The existing concrete slab is to be removed. The existing piles will not be removed, and are to be cut off at the bottom of the existing slab. The Contractor is to record the locations of the existing piles for use during construction of the new auger cast piles. Please see revised Drawing M-1, which is part of this Addendum No. 2.

4. Question/Comment: Please confirm there are no other piles on slabs or under the building that require demolition other than that on the existing PS 8310 slab where pumps and electrical switch cabinets are located.

Response: If piles exist under the building to be demolished, those piles would be cut off at the bottom of the slab and would not be removed. As in the response to Question 3 above, existing piles under the existing pump/electrical equipment slab will not be removed.

5. Question/Comment: Dwg. M-3 shows 10” piping on downstream side of pumps to be on top of 10” and 12” upstream piping. There are no pipe supports shown for any piping. Please advise how to support the upstream and downstream piping, as well as piping shown on Section D of Dwg. M-3.

Response: The Contractor is responsible for support spacing and construction as described in Specification Section 40 05 07, Paragraph 1.1.G and the Pipe Support detail on Drawing M-4.

6. Question/Comment: Dwg. M-3 shows 10”x6” DI Reducers connecting to pump on the upstream side. Spec Section 43 23 05 Paragraph 2.1.J.2. calls for 8” suction, please clarify.

Response: The pumps are indeed 8” x 8”. Drawings M-3 has been revised to show 10” x 8” reducers on the suction and discharge sides of the pumps.

7. Question/Comment: Section 46 00 00 2.2.A – Is Seismic retainer testing required?

Response: No.

8. Question/Comment: Section 46 00 00 2.2.B – For these specified analyses, does the PE have to be from the State of Florida? Or would a from the State in which the manufacturer resides be allowed?

Response: As stated in Paragraph 2.2.B – “….. signed and sealed by an engineer registered in the State wherein the project is to be built.”, which for this project is the State of Florida.

WUD No. 18-064 Addendum No. 2 AD 2-4 Issued: 04/28/2021

9. Question/Comment: Section 40 97 00 2.3 (and 3.3,A,4) – Requires a harmonic study and field test but Par. 2.2,A.5 states that only VFDs above 60HP must have low harmonic (18-pulse) design.

Since these VFDs are below 60HP are they required to meet IEEE519 harmonic limits? If they are not required to meet IEEE519 harmonic limits, then are these studies and tests needed?

Response: Paragraph 2.2.A.5 of Section 40 97 00 does not apply to this project because 18-pulse VFDs are required for motors greater than 60 HP and because 18-pulse VFDs require air-conditioning, neither of which applies to this project. However, the 6-pluse, filtered VFDs for this project are to provide “clean” power, which is required regardless of the type of VFD used. A harmonic study is required prior to the Contractor ordering the VFDs, with the intent of the study to guarantee the quality of power using the VFD provided by the Contractor for this project.

10. Question/Comment: Section 40 97 00 Par 2.2,H (a-b) – States that bypass starters are to be provided where indicated. We cannot find any indication in the plans. Is bypass required? If so, what type of bypass as paragraphs c. does not appear to apply to 50HP ratings. Also is an output contactor required as stated in paragraph e. of this section?

Response: The VFDs are designed for pump soft starts as a normal sequence of operation. Bypass starters are to be part of the VFD package. Type FVNR are specified for motors less than 50 HP and are to be built into the VFDs. The backup allows the application to run at full speed until the problem with the VFD can be addressed. Paragraph 2.4 on Section 40 97 00 lists several manufacturers as acceptable. Coordination shall be done between selected manufacturer and Contractor for bypass and output contactor according to VFD’s control diagram.

11. Question/Comment: Section 40 97 00 & Electrical Plans – The three 50HP VFDs are shown on Electrical Drawings E-600 and E-400 but the plans nor specifications provide schematics to show specific features required for the VFDs. Key information needed includes:

VFD Enclosure specifications to include NEMA type, construction material, physical size limitations, need for dead front or door mounted pilot devices.

Specific VFD control circuit schematic is not supplied.

Response: In two parts:

VFD Enclosure specifications:

New VFDs to be provided with heat sinks, NEMA 4X. Refer to floor plan on Drawing E-400, with footprint = 4’W x 2’-3-5/16”D. Working clearance shall be per NEC requirement, with door specifications/requirements as per manufacturer. If footprint differs from that shown on Drawings, Contractor shall provide a field layout with electrical equipment in the area for coordination purposes.

Specific VFD control circuit schematic:

Schematic to be provided by selected equipment manufacturer.

12. Question/Comment: We can’t find a rebar spacing detail for the auger cast piles or a spec section for that work, please advise.

Response: Reinforcing steel spacing and dimensions are shown in the Auger Cast Piles Detail on revised Drawing S-10 (Sheet 21 of 43) attached to this Addendum No. 2. Specs for reinforcing steel consist of Note 12 under Concrete Notes on Drawing S-1 (Sheet 12 of 43).

WUD No. 18-064 Addendum No. 2 AD 2-5 Issued: 04/28/2021

13. Question/Comment: On Drawing C-3, Note 9. states, Sheet pile shall be coated/painted in Gray.

On Drawing S-1, SHEET PILE - states, Sheet piling shall be coated with Coal Tar Epoxy. Is the above ground portion of the sheet pile Gray and the underground portion to be Coal Tar? If so, that would mean that one side of the pile will be coal tar all the way and the other side will be a mix of coal tar and gray paint. Please clarify.

Response: The intent is to have all sheet pile exposed to underground conditions coated with Coal Tar Epoxy, and to have the above ground (visible) surface of the sheet piling coated/painted Gray.

14. Question/Comment: Please advise on amount of pump redundancy for the by-pass, is it 50% or 100% redundancy?

Response: Pump redundancy will depend on how many bypass pumps are being used by the Contractor. Pump redundancy is considered adequate when the maximum pumping rate (1,690 gpm at 135 feet of TDH) is met with the largest pump out of service.

15. Question/Comment: Please advise if cost of generator manufacturer’s cost for startup is the responsibility of the Contractor or is this Owner’s responsibility? Typically this is included cost when purchasing the generator, please advise.

Response: As noted in General Information Note 5 found on Drawing G-2, the Contractor will start-up the Owner purchased and furnished generator with the manufacturer/vendor (Tradewinds).

The generator’s start-up cost is the responsibility of the generator manufacturer/vendor and is to be included in the cost of the generator.

16. Question/Comment: Please advise if the generator has already performed the load test or is this a requirement of the Contract/Contractor? If required, please advise if Contractor is to bare [sic] the cost, typically, this cost is included when purchasing the generator.

Response: Manufacturer’s load testing is included in the purchase (by Owner) of the generator.

17. Question/Comment: Electrical Demolition Key Note 11 on Dwg. E-300 states “PBCWUD provided an outdoor generator in a weatherproof enclosure […]. Generator package include an ATS installed inside enclosure”. Please clarify if the ATS is located inside the weatherproof generator enclosure or is it an ATS inside a separate enclosure.

Response: ATS is not included in generator enclosure. Refer to Drawing E-400, Note 13 for ATS location as well as riser diagram on Drawing E-600 for required ATS specifications.

18. Question/Comment: Dwg. E-400 calls for a ATS to be separate from the generator enclosure?

Furthermore, Spec Section 26 36 23 Paragraph 1.1.A. states “Contractor shall furnish, install, test and provide start-up of automatic transfer switch”. Please clarify if ATS is to be furnished by the Contractor or is the ATS already supplied with the generator package.

Response: Yes, ATS is separate from the generator, and yes, ATS is to be furnished by the Contractor. ATS is not included in generator enclosure, and refer to Drawing E-400, Note 13 for ATS location as well as riser diagram on Drawing E-600 for required ATS specifications.

WUD No. 18-064 Addendum No. 2 AD 2-6 Issued: 04/28/2021

19. Question/Comment: Section 05 50 59 1.1.A – It is not clear what piping, valves, etc. need to be provided as part of the pump skid. Can you please clarify what is to be part of the skid and what the Contractor would install in the field?

Response: It is anticipated all piping, valves, pumps, etc. located above the surface of the skid would be included with the skid, and that the Contractor would make two connections to the skid piping. One connection on the suction/upstream side with a spool and 12” 90O elbow, and the other on the discharge/downstream side with a flanged pipe.

20. Question/Comment: Section 05 50 59 1.6.B.1 – Please clarify that three (3) pumps are to be provided.

Response: Yes, the project includes three (3) pumps. Section 05 50 59 1.6.B.1 is in error. This is included in the REVISIONS TO TECHNICAL SPECIFICATIONS shown above on Page AD2-2.

21. Question/Comment: Does PBC have adjacent property to stage materials/construction yard for this project?

Response: No. It is up to the Bidder/Contractor to find property outside WUD’s site for staging, storage, etc. Contractor is to stage equipment, materials, etc. on property owned by Palm Beach County WUD only – and specifically within the property lines of the site. In addition, the NW 1st Avenue right-of-way cannot be used for staging, storage, etc.

22. Question/Comment: Sheet S-10 (pg. 21/43) notes “27’ long” in the auger cast pile detail section, Sheet S-1 (pg. 12/43) notes “Foundation 25 FT depth” (as per Geo Report Recommendation by Radise International dated 05/31/2019). Please confirm pile depth that we are to bid.

Response: The pile depth to be bid is 27 feet. Drawing S-1 has been revised to be consistent with the pile length of 27 feet shown on Drawing S-10.

23. Question/Comment: The Geotechnical Report is showing organic material at the new force main elevation. Section 7.2.6 of the report states these soils should be over-excavated and replaced.

Specification 31 23 33 3.3.G requires over-excavation of 6”. The typical pipe trench detail on drawing C-5 only requires 4” bedding and does not detail any over-excavation. Please clarify if organic soil is encountered while installing new force main, how much over-excavation is required.

Response: In accordance with Section 31 23 33, Paragraph 3.3.G, organic materials are to be removed to 6 inches below the specified force main excavation depth and replaced with suitable materials (bedding material). In accordance with Section 31 23 33, Paragraph 3.5.A, do not start backfilling until piping has been inspected by the ENGINEER.

24. Question/Comment: Please provide specs for the single girder bridge crane to be installed in the new pump station shed.

Response: Please see Specification Section 14 60 00 CRANES AND HOISTS attached to this Addendum No. 2. In addition, Drawing E-600, Panel schedule “PSH”, Circuit 2,4,6 calls for 3HP, 480 volt, 3phase, 60Hz for Crane purposes.

WUD No. 18-064 Addendum No. 2 AD 2-7 Issued: 04/28/2021

25. Question/Comment: Section A on Dwg S-11 shows W12x65 columns below the horizontal W16x36 girder. The same column above the girder shows a W16x40 column, however, no welds are shown.

Please clarify.

Response:

The W16x40 callouts are misplaced. The W16x40 callout leaders (on the left and right side of Section A on Drawing S-11) should be pointing to the roof girder. The column is a continuous W12x65 shape.

The W16x36 is not in the same longitudinal plane as the W16x40.

Detail A on Drawing S-12 shows a ¼” fillet weld all around the W12x65 column to the W16x40 roof girder. Columns and beams (roof girders) are welded and bolted.

The W16x36 girder shall be connected to the W12x65 haunch with 5/16” fillet welds on both sides of the flange at each bearing location.

Revised Structural Drawings are attached to this Addendum No. 2 to reflect the above information.

26. Question/Comment: Reference Bypass Pumping System. If the Contractor elects to use the Owners existing electric pumps, will Owner continue to pay power usage costs.

Response: No, the Owner will not pay for power usage costs. During the time the Contractor uses the Owner’s existing electric pumps, the operation of the pumps (including electric costs) becomes the responsibility of the Contractor. The existing electric pumps are to be salvaged (and returned to Owner) after use (if used) for bypass pumping.

27. Question/Comment: What are the current available power available on site?

Response: Power is 480 volt, 3 phase, 60 Hz.

28. Question/Comment: Will the County pay for electrical power if electrical pumps are used for the bypass operation?

Response: Asked and answered in Question 26. No, the Owner will not pay for power usage costs.

During the time the Contractor uses the Owner’s existing electric pumps, the operation of the pumps (including electric costs) becomes the responsibility of the Contractor.

29. Question/Comment: Will 24/7 pump watch be required during the by-pass pumping operation?

Response: No. However, backup/redundant pumps, controls, alarms, and automatic alarm notification of Contractor’s personnel will be required.

30. Question/Comment: Please provide specifications for required by-pass flows and pressures in order to adequately design/size by-pass operation.

Response: Maximum pumping rate is to be 1,690 gpm at 135 feet of TDH, with the largest bypass pump out of service.

31. Question/Comment: Electrical Key Note 6 on Dwg. E-400 states temporary by-pass to be diesel operated, however, bullet 5 of Note 5 on Dwg. C-2 allows for either electric or diesel pumps. Please clarify.

Response: Bullet point 5 of Note 5 on Drawing C-2 is correct – electric or diesel pumps.

END OF ADDENDUM No. 2

PBCWUD No. 18-064 PREMANUFACTURED BOOSTER PUMP SKID 02/19/2021 05 50 59 - 3

1.6 SYSTEM DESCRIPTION

A. General

It is the Contractor’s responsibility to make any piping and fitting modifications to match suction and discharge piping to the new pump station. Prior to ordering materials the Contractor shall take all necessary field measurements and provide the Consultant with a shop drawing depicting the proposed new pre-engineered booster pump station system and piping connections for approval by the County and Consultant.

B. Booster Pump Station System

The booster pump system shall consist of three (3) variable frequency drive pumps, arranged in parallel and mounted on a common structural base, sized to meet the system flow requirements and spatial limitations for installing the new system as shown on the Drawings.

The control system shall automatically cycle (with option or operator manual override) the pumps.

Control program to select pump start on equalize run time per run timers.

In addition to the above-described operation, any one or both pumps shall be capable of manual start-stop control.

The pumps shall be centrifugal type, with variable speed motors and shall be designed for the conditions described in Section 43 23 05.

1.7 WARRANTY

A. The Contractor shall obtain from the manufacturer its warranty that the equipment shall be warranted for a period of 1 year from the date of Substantial Completion to be free from defects in quality work, design or material. If the equipment should fail during the warranty period due to a defective part(s), the part(s) shall be replaced in the equipment and the unit(s) restored to service at no expense to the County.

PART 2 - PRODUCTS

2.1 GENERAL

A. The Booster Pump Station System specified below and shown on the Drawings shall be manufactured by Barney’s Pumps or equal.

B. This Section is intended to give a general description of what is required, but does not cover all details, which will vary in accordance with the requirements of the equipment as offered. It is, however, intended to cover all materials and necessary and desirable accessory equipment and auxiliaries whether specifically mentioned in this Section or not, and as required for an installation incorporating the highest standards for the type of service.

PBCWUD No. 18-064 CRANES AND HOISTS

04/20/2021 PAGE 14 60 00- 1

SECTION 14 60 00– CRANES AND HOISTS

PART 1 – GENERAL

1.1 DESCRIPTION

A. SCOPE

1. This section specifies bridge cranes and hoisting equipment.

B. CRANE SUMMARY

Crane #1 Warehouse/Storage Span: 28 Ft., 0 Inches Capacity: 2.5 Tons Crane type: single girder, top running, individual drive

Classification: Crane shall be designed and constructed to CMAA Specification # 70 or #74, as applicable, for Class “C” service requirements and operation in a non-hazardous environment.

Crane speed: 100 FPM, infinitely variable Crane drive: Dual motor drive Trolley speed: 65 FPM, infinitely variable Trolley drive: Motorized Hoist speeds: 3.3 and 19 FPM, two speed Hoist type: Electric wire rope Hoist lift required: 15 Ft.

Control: Pendant from independent track on bridge

C. WORK INCLUDES THE FOLLOWING:

1. Detailed design of completed crane system, including bridge, end trucks, trolley, hoists, cabling, controls, and all appurtenances specified hereinafter.

2. Shop drawings.

3. Fabrication of a complete crane.

4. Inspection and shop testing.

5. Documentation and schedules.

04/20/2021 PAGE 14 60 00- 2

1.2 REFERENCES

Equipment furnished under this section shall, except as otherwise noted, comply in all respects with the requirements of the following standards:

OSHA Occupational Safety and Health Administration

Part 1926.554 - Overhead Hoists Part 1910.179 – Overhead and Gantry Cranes

*CMAA Crane Manufacturer’s Association of America Specifications for Top Running Bridge & Gantry Type Multiple

Girder Electric Overhead Traveling Cranes - No. 70 (2004) Specifications for Top Running and Under Running Single Girder Electric Overhead Cranes Utilizing Under Running Trolley Hoist - No. 74 (2004)

*ANSI / ASME

American National Standards Institute / American Society of Mechanical Engineers ANSI / ASME HST-4 - 1999 Performance Standard for Overhead Electric Wire Rope Hoists ANSI / ASME B30.16 – 2003 Overhead Hoists (Underhung) ANSI / ASME B30.2 - 2001 Overhead and Gantry Cranes (Top Running Bridge, Single Or Multiple Girder, Top Running Trolley Hoist) ANSI / ASME B30.11 – 2004 Monorails and Underhung Cranes ANSI / ASME B30.17 – 2003 Overhead and Gantry Cranes (Top Running Bridge, Single Girder, Underhung Hoist)

NEMA National Electric Manufacturer’s Association

NEC National Electric Code – 1999

Article 100, Article 240-1, Article 430-31, Article 430-51, Article 610-1, Article 610-31

*Compliance to this standard is limited to the extent such standard is incorporated into and made mandatory by OSHA regulations.

1.03 SUBMITTALS

A. SHOP DRAWINGS AND EQUIPMENT DATA

1. Manufacturer’s catalog data for hoist.

2. Dimensional drawings and details for bridge crane system.

3. Wiring schematics. – ship with crane

04/20/2021 PAGE 14 60 00- 3

B. OPERATIONS AND MAINTENANCE MANUALS (one set of Owner’s manuals in paper and on CD rom)

1. Equipment function, normal operating characteristics, and limiting conditions.

2. Assembly, installation, alignment, and maintenance instructions.

3. Lubrication and maintenance instructions.

4. Guide to “troubleshooting”.

5. Parts list.

6. As-built drawing.

7. Test results.

1.04 APPLICABLE STANDARDS

A. Contractor shall adhere to OSHA, state, and local safety guidelines, laws, rules, and regulations.

B. Contractor shall conform to all applicable ANSI, CMAA, and HMI specifications and/or standards.

C. Comply with CMAA specification 74 or 70, as applicable.

D. Long lead items [hoist, end trucks, drives and controls] will be ordered by contractor upon receipt of purchase order and credit approval. Steel will not be ordered until shop drawings and submittals have been approved by the customer.

E. All electric equipment shall be UL, CSA c/us or ETL labeled.

1.05 WARRANTIES

A. Provide one-year equipment warranty.

PART 2 - PRODUCTS

2.01 ACCEPTABLE PRODUCTS

A. Bridge crane package systems shall be provided by: Advanced Overhead Systems or pre approved equal.

B. Hoist shall be R&M Spacemaster SX electric wire rope type.

04/20/2021 PAGE 14 60 00- 4

2.02 MATERIALS

Components Material Bridge beams Steel, A992 End trucks Steel, ASTM A36 (or equal) Trolley Steel, ASTM A36 (or equal) Wheels Cast iron or steel Hooks Forged steel

2.03 EQUIPMENT

A. HOIST AND TROLLEY

1. Top-running and under-running single girder cranes shall utilize the

Spacemaster SX low headroom or standard headroom electric wire rope hoists as manufactured by R&M Materials Handling Inc., Springfield, OH.

2. The hoist shall be equipped with an electro-mechanical load-limiting device that shall prevent lifting more than 110% of the rated load.

3. Hoist and trolley motors shall be per 1.01B above, as applicable.

4. Hoisting motor(s) shall be two-speed/two winding squirrel cage type with a speed ratio of 6:1.

5. Hoisting motor(s) shall be totally enclosed with IP55 protection, minimum class F insulation, Klixon type bimetal switch for thermal protection and shall have a 60% ED rating.

6. Trolley shall be furnished with an adjustable frequency inverter drive and two-step or infinitely variable speed control for smooth acceleration and deceleration.

7. Trolley motors shall be inverter duty motors with minimum class “F” insulation and motor enclosures shall be TENV [totally enclosed non-ventilated].

8. Rotary cam type limit switch equipped with 4 micro-switches shall be provided. Limit switch shall provide upper and lower limit of hoist travel, hoist slow down prior to reaching upper limit and phase sequence supervision at upper limit. An additional block operated limit shall be included.

9. Hoist motor brake shall be DC disc type with adequate torque to stop and hold over 125% of the hoist rated load.

10. Large diameter rope drum with a minimum of 36:1 drum to wire rope diameter ratio. Groove depth shall be at least 35% of rope diameter. The

04/20/2021 PAGE 14 60 00- 5

rope drum shall be equipped with a rope guide to help keep the rope aligned in the grooves of the drum.

11. Wire rope shall be constructed from galvanized steel having a minimum safety factor of 5.

12. Hoist reeving shall be single reeved. Lateral hook drift shall not exceed 1/8 inch per foot of vertical travel on single reeved models.

13. The hoist nameplate is to carry a CSA c/us rating. The actual hoist control enclosure rating shall be at least equivalent to IP55 / NEMA 4 type.

14. Hooks shall be made of forged alloy steel (34CrMo4QT or 34CrNiMo6QT) and shall be fitted with a spring-loaded flipper-type safety latch.

15. Hoist shall have a duty rating suitable for the load class and load cycles of the application (reference appendix A).

16. AGMA quality class 12 machine cut, hardened and precision ground hoist gearing. The gears inside the hoist gearboxes on models up to 5 ton capacity are lubricated by semi-fluid grease. On models over 5 ton capacity the gears inside the hoist gearbox are lubricated with semi-fluid grease or oil.

17. AGMA quality class 10, hardened and precision ground trolley drive gearing, lubricated by semi-fluid grease.

18. Trolleys shall have safety drop lugs and energy absorbing bumpers.

B. BRIDGE GIRDER

1. Bridge girder shall be per 1.01B above, as applicable.

2. Bridge girders shall be constructed from welded box girders or Structural beams W14 Minimum, Steel, ASTM Grade A992, as required.

C. END TRUCKS AND BRIDGE DRIVE

1. End trucks shall be designed in accordance with CMAA specifications as applicable (reference appendix B).

2. End trucks shall be bolted to bridge girder.

3. Bridge drive shall be dual-motor (A-4 arrangement per CMAA).

4. Bridge drive shall be designed to stop the bridge within CMAA specifications.

5. End trucks shall be equipped with rail sweeps and energy-absorbing rubber bumpers.

04/20/2021 PAGE 14 60 00- 6

6. Travel limit switches to be provided as necessary for safe operation.

7. Bridge shall be furnished with an adjustable frequency inverter drive and two-step or infinitely variable speed control for smooth acceleration and deceleration.

8. Bridge motors shall be inverter duty motors with minimum class “F” insulation and motor enclosures shall be TENV [totally enclosed non-ventilated].

9. AGMA quality class 10, hardened and precision ground bridge drive gearing, lubricated by semi-fluid grease.

D. RUNWAY SYSTEM

1. Material for one (1) each, two rail, building-supported runway system, 2.5-ton capacity, approximately 28'-0" (+/-)in overall length, with maximum 12' -6" (+/-) support centers from existing building haunches. Runway system to consist of wide flanged beams with structural bumper-type end stops, ASCE rails with hook bolts and splice bars, electrification supports, bracing and all necessary mounting hardware. Runway system shall be installed straight, level, and in parallel elevation, as per C.M.A.A.

standards.

E. POWER SUPPLY

1. Power supply for the hoist shall be 480 volt, 3 ph., 60 Hz. All power required for the operation of the hoist, trolley, and end trucks shall be developed from this source.

2. Runway electrification shall be 4-bar safety type rigid conductors as manufactured by Insul-8, Duct-O-Wire Company or Wampfler. Wall mounted disconnect switch and power to runway conductors provided by Electrical Contractor.

3. Cross bridge electrification shall be flat cable style festoon system with terminal box, multi-conductor cord, plug connectors (when available) and accessories. Cables are to be hardwired when plug connectors are not available.

F. CONTROLS

The following controls shall be used as applicable:

1. Six-way operation, plug-in pushbutton pendant suspended from independent festoon track. Radio control may be quoted as an option.

2. Pendant shall include Start (momentary) button and Emergency Stop (push to maintain, turn to release) that controls a mainline contactor in the bridge control panel.

04/20/2021 PAGE 14 60 00- 7

3. Pushbutton shall be clearly marked with hoist, trolley and bridge travel directions.

4. Hoist shall be 2 speed magnetic reversing type (standard) or variable frequency inverter control (optional) and the trolley and bridge controls shall be variable frequency inverter control (standard), as required per section 1.01.B.

5. Electrical control enclosures shall be IP55 or NEMA 4 type. Pushbutton enclosure shall have a rating of IP65, NEMA 4X, 4 or 5.

F. LABELING

1. Hoist and bridge beam shall be labeled with load rating.

2. A corrosion-resistant nameplate shall be fixed to the bridge with the following information:

a. Name of manufacturer

b. Mfg.’s model number and serial number

c. Capacity

d. Date of manufacture (month and year)

G. PAINTING

1. Hoist and trolley shall be factory painted (2-part epoxy) per manufacturer’s standards.

2. Bridge shall be shop cleaned, primed, and painted per manufacturer’s standards.

3. The following items shall not be painted:

a. Rail surfaces in contact with wheels

b. Wheel running surfaces

c. Hoist wire rope

d. Conductor bar, festoon cables and supports

PART 3 – EXECUTION (if applicable to crane manufacturer)

3.01 INSTALLATION AND INSPECTION

A. Inspect structure and crane rail erection for conformance with reviewed shop drawings and contract documents prior to installation of equipment. Bring nonconforming work to the attention of the customer prior to proceeding with crane installation. Non-conforming runway structure or installation must be corrected prior to load testing of crane system. Costs of delays or additional work due to nonconforming runway structure will be reimbursed by the Owner.

04/20/2021 PAGE 14 60 00- 8

B. Bridge crane, including Runway System shall be installed in conformance with manufacturer’s instructions and inspected by a manufacturer’s representative.

Provide all necessary accessories to make bridge crane complete, usable, and capable of meeting the operating requirements specified in the Operating Requirements. Test, adjust and clean equipment for acceptance by Owner.

3.02 TESTING

A. All crane equipment shall be operated through a complete lift and lowering cycle and through a complete travel of the bridge and trolley to determine that the equipment shall perform smoothly and safely and that pendant cable length is sufficient to permit operation from desired floor levels. All tests shall be carried out with the bridge crane equipment loaded at 125 percent of capacity. The bridge crane provider shall provide the test weight loads. Any defects shall be corrected by the bridge crane provider without any expense to the Owner.

3.03 USE BY CONTRACTOR

A. If crane is used by the Contractor, it shall be repaired, repainted, and otherwise refurbished to like new condition prior to its acceptance. The Contractor assumes all responsibility for operation and maintenance until the crane has been accepted by Owner.

3.04 CLEANUP

A. Upon completion of work, area shall be cleaned and restored to original condition, acceptable to the Owner.

END OF SECTION