Attachment_A_-_NIST_NCNR_DCS_-_VSANS_MEZZANINE.pdf

ATTACHMENT A – NIST NCNR DCS-VSANS MEZZANINE

Statement of Work – NIST NCNR DCS-VSANS Mezzanine

I. BACKGROUND

The National Institute of Standards and Technology (NIST), Center for Neutron Research (NCNR) focuses on providing neutron measurement capabilities to the U.S. research community. It is the national center for research using thermal and cold neutrons, offering its instrumentation for use by all qualified applicants. Many of its instruments rely on intense beams of cold neutrons emanating from an advanced liquid hydrogen moderator.

The NCNR is currently undertaking a facilities expansion to include a new Very Small Angle Neutron Scattering (VSANS) instrument. The installation of the VSANS instrument in the guide hall on Neutron Guide (NG)-3 will require a modification to the current Disc Chopper Spectrometer (DCS) Mezzanine on NG-4. The current mezzanine on NG-4 sits on top of the DCS instrument.

Part of the new mezzanine will sit on top of the DCS instrument, while the other half will straddle the VSANS detector vessel. NCNR has designed a mezzanine that meets its requirements. The newly designed mezzanine is designed to withstand 150 pounds per square foot. Also, the NCNR designed mezzanine is designed with a safety factor of 4. Some of the sections of the deck were designed to be removable so that some instrument components, both on NG-3 and NG-4, can be easily accessible.

II. SCOPE

This requirement is concerned with the fabrication of the new mezzanine components that need fabrication as well as with the purchase of “off-the-shelf” components, when applicable. These components include, but are not limited to, all specified steel, hardware, decking, railing, and stairs.

Engineering specifications regarding all the components mentioned above, as well as any safety code requirements will be listed on the “Requirements”, section III, of this statement of work.

The mezzanine top level assembly drawing, number 018-2000, has three major subassembly drawings:

1. 018-2003 DCS Mezzanine

2. 018-2210 DCS-VSANS Mezzanine: This section of the mezzanine is located in between of the two instruments, DCS and VSANS.

3. 018-2101 VSANS Mezzanine

Each subassembly listed above contains a bill of materials that specify the required quantity of each of the components that belong to said subassemblies.

Assembly number 018-2003 represents the part of the mezzanine that will sit on top of DCS.

Calculations have been done and it has been determined that DCS can withstand the loads transferred by the mezzanine at the mezzanine’s designed capacity. This requirement is NOT to perform calculations or optimize the design of the mezzanine.

NCNR personnel will be responsible for assembling the mezzanine in place. However, it is the Contractor’s responsibility to test fit the mezzanine’s frame as part of the quality assurance check. Deck, railing, and stairs are not required to be test fit. It is understood that all components must go through Contractor’s quality check procedure. However, only the legs that belong to assembly number 018-2003, not all of the legs in the entire top level assembly, shall be tested for fit.

Pictures and documentation of test fit shall be provided to NCNR. NCNR may choose to send staff to witness test fit. Travel to be at NCNR’s expense. NCNR shall be notified well in advance so travel can be planned accordingly. Renderings that show the mezzanine installed with the instruments DCS and VSANS in place are for reference only.

III. REQUIREMENTS

The Contractor shall provide the required mezzanine in accordance with the following specifications.

1. Engineering Specifications

a. Frame

1. Crane on 2-D drawings and 3-D model is included for reference only.

2. All fabrication to conform to the current provisions of the International Existing

Building Code & the International Building Code.

3. All steel and fabrication to conform to the latest edition of the AISC

Specification.

4. All structural steel to be ASTM A992 with a minimum Fy = 50 KSI.

5. All structural aluminum to be 6061-T6 Aluminum.

6. Welding shall be in accordance with the latest edition of the structural welding code AWS D1.1 of the American Welding Society. All shop welding shall be done by certified welders in accordance with the American Welding Society Standards. All welded connections shall be performed using E70XX electrons.

7. Copy of welder’s certification to be included with RFQ.

8. All structural steel to be painted dark gray or mezzanine gray.

9. Welded nuts on I-beam web – There are some instances where nuts are called out to be welded to an I-beam. This is to accommodate the ease of disassembly of joists that are located under removable deck sections without the need to reach for bolts or nuts from underneath the mezzanine. In addition, it avoids the disassembly of any non-removable deck components. Specifications for removable deck sections found in III.1.c.x.

b. Structural Hardware – Per the Research Council on Structural Connections, Specifications for Structural Joints, June 30, 2004 revision, Table 2.1, the hardware grade for this project shall be as follows:

1. Bolt – ASTM A325

2. Nut – ASTM A563

3. Washer – ASTM F436

4. Hardware shall not be galvanized as this is an indoor application.

5. Hardware size – It is specified on the assembly’s bill of materials

6. Hardware quantity – Contractor to provide 10% additional hardware on top of what is specified on the bill of materials.

c. Deck/Platform – the words ‘deck’ and ‘platform’ to be used interchangeably in this statement of work.

1. Structural Requirements

i. Deck total thickness shall not exceed 2-5/8 inches (height).

ii. Deck shall be made of a combination of corrugated metal and ResinDeck

Xspan FR, or equivalent material.

A. Corrugated metal shall be installed directly on top of I-beams and joists.

B. ResinDeck Xspan FR or equivalent material shall be installed on top of corrugated metal.

iii. ResinDeck Xspan FR equivalent material shall meet or exceed the following features:

A. 200 psf. dead load capacity with supports that span every 24”.

B. 3,000 lbs. live load capacity with supports that span every 24”.

C. ASTM E-84 Class “A” flame spread less than 25.

D. Top surface shall be painted gray.

E. Top surface shall be slip resistant.

iv. Corrugated metal maximum height shall be 1.5 inches.

v. Corrugated metal shall be painted white.

vi. Deck materials, together, shall meet or exceed 200 psf. (dead load) capacity considering that supports span 24 inches.

vii. Deck materials, together, shall meet or exceed 3,000 lbs. live load capacity considering that supports span 24 inches.

viii. All platform hardware to be recessed. Bolt heads, or any other component, shall not stick above top surface of deck.

ix. Contractor shall provide applicable hardware and quantity necessary to install the deck/platform.

x. Removable deck sections A. As shown on the assembly drawing, 018-2000, there are five (5) removable sections on the deck.

B. Designated removable sections shall be removable without having to remove the non-removable sections of the deck, railing, or any other part of the mezzanine.

C. The top surface of removable sections must be the same material, texture, color, and height as non-removable sections.

D. When removable sections are installed, they shall blend in, with non-removable sections.

E. Removable sections shall be able to be installed and uninstalled in less than fifteen (15) minutes each with a maximum of two (2) persons working on it.

F. Higher consideration will be given to removable sections that can be assembled and disassembled quicker and require the least amount of hardware and connections.

G. Each component of all removable sections shall weight no more than forty

(40) lbs. unless otherwise specified.

H. Removable sections shall be uninstalled from the top of the mezzanine.

Thus, not needing to reach underneath to unbolt or disconnect any components.

I. In the case where the removable sections are at the edge of the mezzanine, removable sections shall be able to be removed without the need to disassemble the railing.

J. Removable sections shall have two (2) threaded lifting points, three (3) to five (5) inches from the corner opposite to each other. The thread size shall be ½”-13.

K. Removable sections shall be reusable and repeatable. Meaning, destructive disassembly shall not be allowed.

L. An illustration of a typical removable section is shown on drawing number 018-2000, sheet 3 of 3

2. Safety Requirement

i. Deck assembly shall conform to ASTM E-119 or UL263

A. If deck is made out of a combination of materials, top material may pass ASTM E-84 test, only, as long as the entire platform assembly, as a whole, conforms to standards stated above

ii. Top surface shall be flat. e.g., no diamond plate allowed.

iii. Top surface shall be slip resistant

d. Railing

1. Structural Requirements

i. Railing on 3D model and 2D drawings is not submitted as a final design. It is intended to serve as reference only. Contractor to submit proposal that meets all of the railing requirements listed in section d.

ii. Railing shall be mounted from the top of the frame, not the side.

iii. Railing or railing components shall not exceed the outside envelope of the mezzanine frame

iv. Contractor shall submit cut-sheets with dimensional information and installation information with RFQ.

v. The installation and un-installation of the railing shall be done without the need to remove the mezzanine platform.

vi. Higher consideration will be given to the railing that, in addition to being mounted from the top, mounts are not wider than half the width of the I-beam.

Thus, the hardware being readily accessible once the deck is installed.

vii. Must be able to withstand 200 lbs. horizontal load.

viii. A railing door/gate must be included in RFQ for the section between crane legs. This is to allow equipment that is lifted with the crane from the floor level to be carried into the mezzanine area. This section is also labeled on the assembly drawing number 018-2000.

A. This gate shall be designed in a way that does not require welding to the crane legs.

ix. Railing shall not need to be removed in order to remove removable sections, as specified on III.1.c.1.x.I.

x. Railing shall be made out of steel A. Railing shall be connected with bolts, not “snapped-on”; no “on the field” welding shall be done at NCNR.

B. Railing shall not contain any plastic.

xi. Per drawing number 018-2000, the assembly requires approximately 130 linear feet of railing. It needs to be noted that this is merely an estimated length as it will change depending on the Contractor’s railing proposal of connection as well as other variables.

xii. Railing shall follow the perimeter of the mezzanine as shown on drawing number 018-2000. Contractor shall provide necessary toe-bar that accompanies the railing, meeting the safety codes specified in section III.1.d.2. Safety Requirements.

2. Safety Requirements

i. Guard rails shall be compliant with 2015 NFPA 101 requirements

ii. OSHA requirements – Shall meet or exceed the following regulation:

A. Part Number: 1910 B. Part Title: Occupational Safety and Health Standards C. Subpart: D D. Subpart Title: Walking-Working Surfaces E. Standard Number: 1910.23 F. Title: Guarding floor and wall openings and holes.

G. GPO Source: e-CFR

iii. Railing and all components related to it, other than hardware, shall be painted “safety yellow”.

e. Stairs

1. Stairs on 3D model and 2D drawings are not submitted as a final design. It is intended to serve as reference only. Railing for stairs shall meet the requirements established in III.1.d. Railing.

2. Stairs shall be tall enough to reach from the floor to the top of the mezzanine platform

3. Two (2) 36-inch-wide flight of stairs shall be provided as specified on assembly drawing number 018-2000, stairs #1 & #2. The stairs shall meet the following specifications:

i. Stairs shall follow criteria for new stairs compliant with 2015 NFPA 101, Table 7.2.2.2.1.1(a) requirements.

ii. Contractor shall use the least amount of steps possible; thus, using the maximum rise height.

iii. Stairs may be quoted with open risers

iv. Tread.

A. Tread shall be closed

B. Tread shall be slip resistant C. Tread may be diamond plate D. Tread shall be painted dark gray or mezzanine gray

v. Railings on stairs shall be compliant with all the safety specifications listed in section III.1.d.2.

vi. Stair railings and all components related to it, other than hardware, shall be painted “safety yellow”.

4. One (1) 24-inch-wide flight of stairs shall be provided as specified on assembly drawing number 018-2000, stairs #3. This is an “access” stair. Stairs #3 shall meet the following specifications:

i. Shall follow criteria for industrial access stairs per NFPA 101, Table 40.2.5.3.1.

ii. Contractor shall use the least amount of steps possible; thus, using the maximum rise height.

iii. Stairs may be quoted with open risers

iv. Tread

A. Shall be closed.

B. Tread shall be slip resistant C. Tread may be diamond plate D. Tread shall be painted dark gray or mezzanine gray

v. Railings on stairs shall be compliant with all the safety specifications listed in section III.1.d.2.

vi. Stair railings and all components related to it, other than hardware, shall be painted “safety yellow”.

IV. Deliverables

1. Kick-off Meeting

2. Fabricated components of the mezzanine per all the requirements in this SOW ready to install.

3. 2D drawings with dimensions of all removable sections. PDF files are acceptable.

3D model drawings are preferred if Contractor has capability to provide 3D model drawings.

4. 2D drawings of railings. 3D model drawings are preferred if Contractor has capability to provide 3D model drawings.

5. Cut sheets for all stairs provided.

6. Cut sheets of all railings.

7. Documentation that hardware meets the specifications listed in this SOW.

8. Forty (40) sheets (8 ft. X 4 ft. each), for a total of 1,280 sq. ft., of ResinDeck

Xspan FR, or equivalent material, per section III.1.c of this SOW shall be provided by the Contractor. NCNR staff is responsible for all “on the field” cuts.

9. Test Fit Documentation.

10. Corrugated metal must be delivered pre-cut, ready to install.

a. Corrugated metal seams:

1. Corrugated metal shall arrive pre-cut with a seam along the line illustrated on drawing number 018-2000, sheet 3 of 3, Section A-A.

2. Corrugated metal shall arrive pre-cut with a seam along every place designated for removable deck sections

3. Every seam shall be placed at the I-beam’s centerline. Thus, the I-beam will be equally supporting 2 sections of deck.

11. Weekly status meeting. This can be done by an email report, phone conference or video conference.

V. Projected Milestones:

1. 1st Milestone: A kick-off meeting, either in person, at the NCNR, telephone conference or through some sort of shared media, shall be had to make sure contractor has full understanding of requirements and deliverables on this SOW.

Contractor shall provide a brief outline of how they plan to meet requirements and schedule. Contractor shall schedule and attend meeting.

a. This start up meeting shall happen within one (1) week of the award of the contract.

2. 2nd Milestone: Test fit documentation. NCNR staff site visit to Contractor facility to witness test fit.

3. 3rd Milestone: Delivery and Inspection of components once they are delivered to

NCNR. Delivery shall occur within ten (10) weeks from contract award date.

NCNR will inspect the components and system within two (2) weeks.

4. 4th Milestone: The installation of the entire assembly will serve as the final inspection.

VI. Delivery Requirements

1. Delivery shall take place within ten (10) weeks from contract award date.

2. Delivery of components shall be done in a flatbed truck so that unloading of components is easy with a forklift from either side of the truck (no loading dock available at NCNR).

a. Low-Boy or Box-Trucks shall not be used for delivery.

3. Items must be packaged in a way that are appropriately protected from weather and rust. Threads must be rust protected

4. Delivery of components at NCNR shall be between 7:30 am and 3:00 pm.

5. Trucks entering the NIST campus will be subject to inspection. This inspection may take considerable amount of time. Truck arrival at NIST needs to be planned accordingly.

6. Max weight: 8,000 lbs. Components shall not be bundled together in a way that the bundle weights more than 8,000 lbs.

7. Contractor to provide truck driver’s full name as well as the full name of anyone who will be accompanying the driver to NCNR two (2) days prior to delivery to allow time for registration.