App G - Pallet Rack Standard PD.docx

Offeror:

-R-

APPENDIX G

FOR

PALLET RACK

AT

TYNDALL AIR FORCE BASE, FL

BUILDING 275

CSN: ATY0B9

DATE: 1 June 2010

PREPARED BY:

Robert O. Burns

PROJECT ENGINEER

403 SCMS/GUEC

Shane Legge

REVIEWER

403 SCMS/GUEC

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Table of Contents

Tyndall App G - Page i SCope General SCope This appendix establishes the minimum performance, design, fabrication, installation, and test requirements for Pallet Rack in the 325th Logistics Readiness Division, Building 275, at Tyndall Air Force Base, FL. The work shall be completed in accordance with this appendix, the Cover Purchase Description (PD), and Air Force (AF) Drawings ATY0B9-01. This appendix covers all equipment, materials, and labor necessary to complete installation of the system.

Definitions Bay - A storage location in the pallet rack which measures from the front shelf beam to the back shelf beam in depth, and from the inside of the upright frame to the inside of the opposite upright frame in width, and from the top of the shelf beam to the bottom of the next shelf beam above in height. The positions on the top level are considered bays even though they are not fully enclosed.

Decking - A solid steel surface spanning the area between two parallel shelf beams for the storage of loose or boxed items.

Pallet rack unit - A unit is an assembly of two upright frames and all shelf beams joining those two upright frames; plus pallet supports, decking, or tire supports.

APPLICABLE DOCUMENTS

Applicable documents shall be in accordance with Section 2 of the Cover PD.

REQUIREMENTS

System deFLription The pallet racks will be used to store palletized loads loose items in such a manner to permit placement and removal of any individual load without disturbing any other load. Decking shall be provided to facilitate storage of loose or boxed items. The pallet rack shall interface with warehouse personnel. The pallet rack system shall be capable of supporting a minimum uniformly distributed load of 1,100 pounds per bay. The pallet rack system shall be designed for use in seismic zone 0. The pallet rack shall conform to the requirements of the Rack Manufacturers Institute (RMI) June 1990 Specification for the Design, Testing, and Utilization of Industrial Steel Storage Racks.

Physical and Performance Characteristics Configuration requirements The rows of rack units shall be located as shown on AF Drawing ATY0B9-01. The racks shall be capable of being assembled side-by-side, in a row, using common uprights to support the shelf beams. The racks shall be separated by a flue space, as defined in 3.2.4., when storage locations are back-to-back.

Upright frames The upright frames shall be of steel, all welded construction consisting of two columns, diagonal and horizontal braces, and floor bearing plates. Each upright frame shall be capable of supporting fully loaded bays without permanent deformation. The upright frames of like racks shall be interchangeable. Upright frames shall meet the following requirements, as a minimum.

Columns The columns shall be a continuous channel, box channel, rectangular, square or other formation approved by the Contracting Officer or technical representative (COTR). Each column shall have openings to readily accommodate beam connectors, end-to-end, at corresponding heights through the height range of the column openings. The openings at the bottom shall allow for the tops of shelf beams to be installed at six inches above the ground and shall continue upward to the top of the column by 2 inch increments. All openings of each column shall be identical to each other and identical to the openings of all other columns. The position of all corresponding openings of the columns shall not vary more than 3/32 inch as measured from the bottom of the bearing plates. The arrangement of the openings and the fastening devices of the beams shall be such that the tops of the beams are flush, within 3/8 inch, with the top of the column. The width of the column, facing the aisle, shall be a minimum 2 7/8 inches.

Bearing plates The bottom of each column shall have a load bearing plate securely attached. Each bearing plate shall be sufficiently sized to disperse the maximum load imposed by the column. Each bearing plate shall have a minimum of two punched holes to accept minimum 1/2-inch anchor bolts in accordance with 3.2.6.

Diagonal/horizontal bracing The columns shall be braced by horizontal and diagonal braces. Each end of all braces shall be securely welded to the columns. The braces shall not protrude beyond the sides of the columns or obstruct the attachment of the shelf beams to the columns, at any height on the columns. The centerline of the bottom horizontal brace shall not be located more than 12 inches from the bottom of the upright frame, and the centerline of the top horizontal brace shall be located not farther than 12 inches from the top of the upright frame. Other diagonal and horizontal braces shall be uniformly spaced between the top and bottom horizontal braces.

Shelf beams Shelf beams shall be the box or step type. Any openings in the shelf beam construction shall face inward, they shall not face the aisle. The connector shall not be welded to the column. Shelf beam-to-column connection shall be of the locking type. Each pair of shelf beams shall provide a bay width of 108 inches. With a uniformly distributed load of 6,000 pounds per bay, there shall be no permanent deformations, and elastic deflections shall not exceed 0.56 percent of the unsupported span, measured with respect to the two ends of the beam. Shelf beams shall be designed with a safety factor of 1.65 to 1. If cross-ties are used they shall be the drop-in type, the use of mechanical fasteners or welding is unacceptable.

Connectors Each end of the shelf beams shall have a multiple prong slip-fit or slip-joint type shelf beam-to-column connector. Separate shelf beams and connectors are unacceptable. The connectors shall be adjustable, allowing the shelf beams to be moved with no more than the use of a soft hammer. The connector shall be capable of transferring all loads and external forces of the shelf beam to the column without failure of the connection, or damage to the column or connector. The prongs shall be of sufficient number, size, and strength to withstand repeated loading and unloading of the rack, and to continually sustain the rated shelf beam load. The prongs shall engage with the openings of the columns in such a manner to prevent lateral rotation of the beam, with each prong contributing to the support of the beam. The prongs shall engage with the openings of the columns to ensure a snug metal-to-metal fit between the horizontal and vertical load carrying members. The prongs shall be of the same design as the opening.

Shelf beam-to-column safety lock Each shelf beam-to-column connection shall have a safety lock which shall lock the shelf beam to the column. The design and manner of construction of the device shall prevent accidental disengagement of the shelf beam-to-column connection during movement or shifting of the assembled rack unit due to impact to the upright frame or shelf beam from horizontal or vertical directions. The safety locking device shall be an integral, attached part of the shelf beam. The safety lock shall be employed without the use of tools, and no part thereof shall obstruct or restrict the loading or unloading of the racks.

Row spacers Row spacers shall be capable of joining the backs of two upright frame sections together to form a double row arrangement. The row spacers shall provide a 12 inch flue space when storage locations are back-to-back. The flue space shall provide adequate clearance for the in-rack sprinkler pipes and heads. Each end shall firmly and securely attach to the column and prevent unintentional disengagement. The row spacer shall be of sufficient size and strength to withstand all forces applied to the connected upright frames during normal loading and unloading operations without deformation or failure. The Contractor shall supply and install a minimum of two row spacers for each set of back-to-back frames. The top row spacer shall be installed within 12 inches of the top of the frame. The bottom row spacer shall be installed within 12 inches of the bottom of the frame. The remaining row spacers shall be installed equidistant from each other.

Leveling shims Leveling shims shall be provided with the rack units where necessary. The shims shall have holes corresponding to the holes in the bearing plate, and shall anchor or lock with the bearing plate when the rack is erected. Shims shall be equal in width and length to the bearing plate under which it is installed. Shims shall be of varying thickness so no more than five shims are installed at any point. Slotted shims shall be unacceptable.

Anchoring the structure The rack system shall be anchored to resist all design shear and uplift forces. The rack units shall be designed to be a rigid freestanding structure and shall not be connected to any existing building structure except the stationary platform and mobile carriages. Each bearing plate shall be securely anchored to the stationary platform and mobile carriages with minimum one 1/2-inch diameter anchor bolt. The minimum embedment of the anchor shall be in accordance with 3.5.2.3 of the Cover PD.

Assembly The assembled pallet rack system shall be rigid, stable, and without deformation or skewing when each bay is loaded to the capacity of the design loads. The pallet rack system shall assemble so that the columns are perpendicular to the beams and parallel to each other. Shelf frames shall be straight and square. All horizontal members shall be level to within 1/8 inch per 10 feet measured over any distance in the rack system.

Decking Solid steel decking shall be installed in all bays between all parallel shelf beams and uprights. The decking shall be capable of supporting a uniformly distributed load of 6,000 pounds per bay. The decking shall be designed with a safety factor of 1.65 to 1. The decking shall not exhibit permanent deformation and elastic deformations shall not exceed 0.56 percent of the unsupported span. Decking shall be the appropriate type to interface with the type shelf beam being provided and shall be within 1/8 inch of the top of the shelf beam. Decking shall not be capable of being accidentally disengaged from the shelf beams. Where building columns are located within the pallet racks and where decking is required, the Contractor shall provide a useful decking bay by cutting the decking to fit around the building column.

QUALITY ASSURANCE PROVISIONS

Inspection The system shall be inspected to verify that it meets all the requirements of sections 1, 2, and 3 of this appendix and the Cover PD. These inspections shall be completed as part of the system checkout test and again as a part of the quality conformance test.

Tests The following tests shall be performed on the system as part of the system checkout test and again as a part of the quality conformance test.

3.1.

and 3.2.3.

Three pallet bays, picked at random, shall each be loaded with two 3,000-pound pallets (total 6,000 pounds) to ensure the pallet beams are set in place. The loads shall then be removed. The distance from the top of each designated shelf beam to the top of the shelf beam above it shall be measured and recorded as M1. The 3,000-pound pallets shall then be put back into the designated pallet bays. The loads shall be left for a minimum of four continuous hours. The distance from the designated shelf beams to the top of the next shelf beam shall be measured again and recorded as M2. The following formula shall be used to determine the deflection amount:

Deflection = [(M1 - M2) / 108] * 100

If the deflection is greater than 0.56 or if permanent deformation exists when the loads are removed, the system shall fail.

Deflection = [(M1 - M2) / 108] * 100

If the deflection is greater than 0.56 or if permanent deformation exists when the loads are removed, the system shall fail.

certifications The Contractor shall provide certification that the following requirements have been met. All certifications shall be provided in accordance with the Contract Data Requirements List.

TECHNICAL PROPOSAL QUESTIONAIRE

FOR

Tyndall App G - Page 7

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PALLET RACK

Offeror:

-R-

Appendix G, Pallet Rack, 1 June 2010

This questionnaire shall be completed by the Offeror. All entries to this questionnaire shall be typed. The questionnaire will be used to determine the Offeror's understanding of the requirements and acceptability of the proposed equipment. Please attach product literature/cut sheets for all equipment detailed in this questionnaire and attach any exceptions to the Purchase Description Appendix or recommendations/design alternatives as detailed below.

Pallet Rack Manufacturer: _______________________________ Model Number: ___________________________________________

Width of pallet rack unit:___________ inches Depth of pallet rack unit:___________ inches Height of pallet rack unit:__________ inches

Minimum capacity of upright frame:__________ pounds based on a maximum shelf spacing of ____ inches Safety factor of: ___________________________ to 1

Vertical center-center spacing of column openings for shelf beam adjustment:___ inches

Type of shelf beam: ______________________________ Bay width provided by shelf beam: _________ inches Minimum capacity per bay: _________________ pounds Safety factor of: ___________________________ to 1

Will shelf deflection meet the requirements as specified?

3.2.3.2.

Will shelf beam-to-column safety locks be provided as specified?

Number of row spacers per set of back-to-back uprights: ________________________________________

Length of anchors to be provided: _________ inches Number of anchors per bearing plate: _____________

3.2.8.

Will wire mesh decking be provided as specified:

Part number of decking: __________________________ Capacity of decking: _____________________________

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EXCEPTIONS/RECOMMENDATIONS/DESIGN ALTERNATIVES

Attach any exceptions taken to the Purchase Description Appendix. Please outline those concerns in detail. Your exceptions will be reviewed to determine acceptability.

Are exceptions taken?

Number of pages attached: ____________________________________

Attach any recommendations or design alternatives you feel may enhance operation, maintainability, or reduce system cost. Your recommendations and design alternatives will be reviewed to determine acceptability.

Are recommendations/design alternatives attached?

Number of pages attached: ____________________________________

We have read the requirements of the Purchase Description Appendix and will comply with all paragraphs as written, with exceptions taken only to those items indicated on the attached exception sheet.

TYPED NAME:

COMPANY NAME:

ADDRESS:

PHONE:

FAX:

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