1614720 P1035 DesRev01 17Nov2020.pdf

NAVFAC Mid-Atlantic CI Core Page 1 of 1

Design Revision 1 eProjects Work Order Number: 1614722

Construction Contract Number: TBD

Project Title: P-1035

Date: November 17, 2020

Design Revision Purpose

1. Update various specification sections for subgrade contaminant measures.

2. Replace specification section 14 55 00 MECHANICAL SCISSOR LIFTS.

Specification Revisions

SECTION 01 57 19 TEMPORARY ENVIRONMENTAL CONTROLS

1.5.1 Work within a Site with Land Use Controls

Add the following to the end of this paragraph:

“Emerging contaminants such as PFAS (PFOA and PFOS) and 1,4-dioxane have been detected above screening levels within the groundwater of the CERCLA site.”

SECTION 01 57 19.01 20 SUPPLEMENTAL TEMPORARY ENVIRONMENTAL CONTROLS

1.2.1.2.2 Construction Dewatering

Delete the second sentence in its entirety and replace with the following:

“Pollutants, including but not limited to chemicals, fuels, lubricants, sewage, paints, sedimentation, emerging contaminants (such as PFOA, PFOS and 1,4-dioxane) and other harmful materials must not be discharged into or alongside any river, stream, or impoundment, or into any channels leading to them.”

SECTION 31 23 00.00 20 EXCAVATION AND FILL

1.8 ENVIRONMENTAL CONSIDERATIONS

Delete the first three sentences in their entirety and replace with the following:

“The project site is known to have contaminated soils and groundwater. Emerging contaminants, such as PFAS (PFOA and PFOS) and 1,4-dioxane, have also been detected above screening levels within the groundwater of the CERCLA site. All soil and groundwater within the limits of construction must be considered to be contaminated until analytical test results indicate otherwise. Earthwork must be coordinated with the NAVFAC MIDLANT Environmental Services (EVS) through the Contracting Officer. Disturbed soil that meets the definition of satisfactory materials may be placed back in the area of construction.”

3.1.2.2 Dewatering

Delete the first sentence of the second paragraph in its entirety and replace with the following:

“Dewatering effluent must be containerized and tested to characterize the effluent prior to release.”

See also attached Section 14 55 00 MECHANICAL SCISSOR LIFTS

- End of Design Revision -

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CORROSION CONTROL AND PAINT FACILITY 21P1035

NAVAL STATION, NORFOLK, VA EPROJECTS W.O. NO.: 1614720

SECTION 14 55 00

MECHANICAL SCISSORS LIFT SYSTEM

08/20

PART 1 GENERAL

1.1 SECTION INCLUDED

Design, fabrication, and installation of groups of synchronized scissors lift including lift platform, scissors legs, internal gear motor, controls, panel boards, accessories, and support base as shown on project drawings and as specified herein.

1.2 RELATED SECTIONS

Section 03 30 00 : CAST-IN-PLACE CONCRETE.

Sections of Division 26: Electrical as applicable

1.3 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI)

ANSI MH29.1 Safety Requirements for Industrial Scissors Lifts

AMERICAN WELDING SOCIETY (AWS)

AWS D1.1/D1.1M (2020) Structural Welding Code - Steel

NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)

NFPA 70 (2019; TIA 19-1; TIA 19-2; TIA 19-3; TIA

19-4; ERTA 1 2019) National Electrical Code

1.4 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for Contractor Quality Control approval. Submittals with an "S" are for inclusion in the Sustainability eNotebook, in conformance to Section 01 33 29 SUSTAINABILITY REPORTING.

Submit the following in accordance with Section 01 33 00 SUBMITTAL

PROCEDURES:

SD-02 Shop Drawings

Mechanical Scissors Lift System ; G

Submit General Arrangement Drawing for approval within 3 weeks of receipt of an order, including plans, elevations, and sections of the lift.

SECTION 14 55 00 Page 1

SD-03 Product Data

Lift ; G

Finishes ; G

Mechanical Scissors Lifts ; G

Submit latest edition of LIFT data sheet and outline drawing with the proposal.

SD-07 Certificates

Mechanical Scissors Lifts ; G

SD-08 Manufacturer's Instructions

Mechanical Scissors Lift and Control System

SD-11 Closeout Submittals

Mechanical Scissors Lift System ; G

Electrical Schematic Drawing including control panel layout.

Installation Manual and Electrical Installation Guide.

Owner's Manual including operating instructions, maintenance schedule, service and troubleshooting guidelines.

1.5 QUALITY ASSURANCE

Manufacturer must have a minimum of five (5) years experience in the manufacture of Mechanical Scissors Lifts .

All structural welding performed by manufacturer shall be in accordance with AWS D1.1/D1.1M . structural welding code.

Mechanical Scissors Lifts must be designed per ANSI MH29.1 code.

Installer shall have the approval of the manufacturer and have a minimum of five (5) years experience in the installation of Mechanical Scissors Lifts .

1.6 WARRANTY

The manufacturer shall warrant the Mechanical Scissors Lifts to be free of manufacturing defects beginning (30) days after shipment with the following minimums:

1. All components - two (2) years parts and labor.

PART 2 PRODUCTS

2.1 LIFT MECHANICAL SPECIFICATION

Capacity: Each Mechanical Scissors Lift shall be rated for the following live load capacities:

SECTION 14 55 00 Page 2

Area A has a quantity of 4 synchronized Mechanical Scissors Lifts, each with 8,000 lbs capacity.

Area B has a quantity of 3 synchronized Mechanical Scissors Lifts, each with 15,000 lbs capacity, and 4 synchronized Mechanical Scissors Lifts, each with 8,000 lbs capacity.

Area D has a quantity of 3 synchronized Mechanical Scissors Lifts, each with 15,000 lbs capacity.

Speed: The Mechanical Scissors Lifts shall have a lifting or lowering time between 36 and 50 seconds for 18 inches of vertical travel when loaded to capacity.

Vertical Travel: The Mechanical Scissors Lift shall have a minimum travel of 18 inches . Travel must be synchronized between all lifts with a maximum difference of 1 inch between lifts at any point.

Lowered Height: The Mechanical Scissors Lift shall have a maximum lowered height of 30 inches .

Raised Height: The Mechanical Scissors Lift shall have a minimum raised height of 48 inches .

Lift Platform: The Mechanical Scissors Lift platform shall be sized as noted with a non-skid diamond tread plate stainless steel deck plate top surface and a removable rigid stainless steel safety skirt to snap onto all (4) sides of the straight sided platform to provide toe protection as the lift platform lowers into the pit.

The platform surface must include (2) removable shipping bolts and (4) 3/4-10 inch lifting eyes. (hoisting rings are to be supplied by the installer).

Support Legs: The Mechanical Scissors Lift must have a single pantograph scissors leg assembly.

Lift Frame: The frame must be painted steel in Paint and PMB Bays, and stainless steel in the Wash Bay.

Deflection Under Load: When loaded to rated capacity, no portion of the Mechanical Scissors Lifts shall exhibit permanent deformation.

Mechanical Drive System:

1. Motor and control enclosures constructed for indoor use in hazardous (classified) locations classified as Class I, Division 1, Groups A, B, C, or D as defined in NFPA 70 for liquid gas and vapor.

Lifting Means:

1. Raising and lowering of the lift shall be provided by a vertical ball screw with brake motor and gear reducer in each Mechanical Scissors Lift built up base.

2. Adjustable upper and lower travel limit switches act to limit the travel of the lift platform to a height flush and level with the floor when lowered and 18 inches above the floor when raised. Redundant over travel limit switches must also be included.

SECTION 14 55 00 Page 3

Maintenance Access:

1. Base must be designed in sections to allow lift to be released and removed from above to perform maintenance on drive system. Manual lifting and lowering capability must be provided with a secondary outlet via power drill operation. Lock rod must be provided to lock the platform for safety during maintenance.

2.2 LIFT ELECTRICAL SPECIFICATION

Motor:

1. Motor horsepower shall be 480v, 3 phase and sized for the rated live load and specified speed.

2. All motors are three phase and shall be designed for continuous duty at ambient temperatures from 32 degrees to 102 degrees Fahrenheit .

Enclosures constructed for indoor use in hazardous (classified) locations classified as Class I, Division 1, Groups A, B, C, or D as defined in NFPA 70 for liquid gas and vapor.

Controls:

1. Each lift system shall be equipped with contact pressure push button control station with up, down, and mushroom style E-stop operators for synchronous control of each multiple lift system.

2. An internally pre-wired main control panel shall be provided with step-down transformer and field wiring terminal strips.

Power Source: Owner shall terminate high voltage operating power to each lift location and to the main control panel.

2.3 FINISHES

All carbon steel surfaces shall be coated with an industrial epoxy finish over primer - color Autoquip Black.

Prior to painting, all dirt, mill scale, oil, and grease shall be removed from carbon steel surfaces by a combination of brushing, wiping, and use of solvents.

PART 3 EXECUTION

3.1 EXAMINATION

Prior to commencing installation of the Mechanical Scissors Lift, the installer shall visually examine the conditions under which the Mechanical Scissors Lift is to be installed and notify the architect in writing of conditions detrimental to the proper and timely completion of the work.

3.2 INSTALLATION

Install the Mechanical Scissors Lift and control system as indicated on the approved shop drawings.

Comply with manufacturer's detailed installation instructions when installing the equipment.

SECTION 14 55 00 Page 4

3.3 FIELD QUALITY CONTROL

Inspection: Upon completion of installation, the Mechanical Scissors Lift system shall be inspected to verify that it meets all requirements of Parts 1, 2, and 3 of this Section.

Tests:

1. Operating Load Test: The owner will provide 110 percent test weights and load the LIFT at the ground level. The loaded LIFT platform shall be conveyed to an upper height and returned to the ground level to assure proper operation. If the LIFT cannot lift or lower the load, the LIFT shall fail the test.

2. Performance Test: This Test is to be performed in conjunction with Test 1 above. During the demonstration of the lifting and lowering test, the owner shall measure the time required to lift and lower the capacity load. The owner will average times for lifting and lowering the load and calculate the average lifting and lowering speed. If the LIFT does not lift the load within 10 percent of the specified speed, or if the lowering speed exceeds the lifting speed by more than 10 percent, the LIFT shall fail the test.

3. Stationary Load Test: This Test is to be performed in conjunction with Test 1 above. The loaded LIFT platform shall remain stationary at an upper level for a minimum of one (1) hour.

After the one (1) hour period, the LIFT will be inspected for deflection of the components or drift of the platform. If deformation or downward drift is evident, the LIFT shall fail the test.

3.4 ADJUSTING AND CLEANUP

Touch up all scratches, abrasions, and other defects in the pre-finished surfaces with the same material color as that used in the factory applied finish.

Remove and dispose of all rubbish and debris caused by the work under this section.

Verify that equipment is properly installed and guarded per ANSI MH29.1 .

-- End of Section --

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