Selfridge ANGB Purchase Descriptions - Hanger 9.pdf

PURCHASE DESCRIPTION

FOR A

STORAGE AID SYSTEM

FOR

127th LOGISTICS READINESS SQUADRON

SELFRIDGE AIR NATIONAL GUARD BASE

HANGER 9

5 MAY 2020

1. REQUIREMENTS

This Purchase Description (PD) establishes the minimum performance, design, fabrication, installation, and test requirements for a Storage Aids System for the 127th Logistics Readiness Squadron at Selfridge Air National Guard Base, Michigan consisting of:

Section Specified in this PD:

2. Bin Shelving

3. Processing Counter

4. Flow-Through Rack

5. Mobile Aisle

6. Contractor Project Requirements

7. Drawings and Pictures

The Contractor shall be responsible for all shipping and installation.

1.1 APPLICABLE CODES: All items provided shall be designed, fabricated, and installed in accordance with the applicable industry codes and standards and in accordance with the manufacturer’s specified procedures.

1.2 RACK CAPACITY LABELS: All racking shall have rack capacity labels applied to all shelves/arms detailing their weight capacities. The labels shall be approximately 2" x 4". Inscribed metal plates or paper stickers containing this information shall be acceptable.

2. BIN SHELVING

2.1 SHELVING LAYOUT:

The shelving system shall consist of shelving units as shown in the drawings at the end of this PD. These shelving units shall be arranged in rows by attaching them together end-to-end and/or back-to-back.

2.2 SHELVING UNIT DESIGN

Shelving shall be secured to the supporting posts by means of positive engaging clips. All shelving, including parts and assemblies, shall be identical.

2.3 SAFETY FACTOR

Design and construction of each load bearing component shall assure that the component is capable of sustaining the specified load with a minimum safety factor of 1.65 to 1.

2.4 SHELF DETAILS

2.4.1 SHELF SIZE

The bin shelving in Hanger 9 shall be 48 inches wide by 24 inches deep by 144 inches tall.

2.4.2 SHELF CAPACITY

Each shelf shall be capable of sustaining a uniformly distributed static load of 400 pounds with an elastic deformation less than 0.875 percent of the unsupported span length, measured with respect to the two ends of the shelf and without any permanent deformation.

2.4.3 SHELF DESIGN

Shelves shall be 18 gauge steel. Plain shelf edges shall be flanged down on all sides not less than 1-1/8 inch nor more than 1-1/2 inches, with not less than one additional return flange on each side.

2.4.4 SHELF CLIPS

Shelf clips shall be provided in sufficient quantity to secure each of the four corners of each shelf to all four supporting posts. The shelf clips shall be designed to preclude the possibility of accidental disengagement of the clips from the post or the shelves under loaded conditions. The shelf clips shall allow for the spacing of the shelf to be changed with minimum disturbance to surrounding shelves and shelving units. Shelf clips shall be capable of being changed with no more than a hammer.

2.5 SUPPORTING POSTS

2.5.1 SUPPORTING POST SIZE

The supporting posts shall be 144 inches high for Hanger 9.

2.5.2 SUPPORTING POST CAPACITY

Each front and back supporting post shall have a minimum capacity of 2,800 pounds for Hanger 9 based on 24 inch shelf spacing without any visible evidence of permanent deformations.

2.5.3 SUPPORTING POST DESIGN

Mounting holes for clips shall be provided on the supporting posts. Mounting holes shall permit adjustment of shelf height on either 1-inch or 1 1/2-inch increments. Holes shall be provided as required for attachment of all back and end panels. Supporting posts shall be provided at all four corners of all shelving units.

Common supporting posts may be used at adjacent corners of single or double faced racks.

2.5.4 SUPPORTING POST TYPE

The front supporting posts shall be either beaded or box type as defined by the Shelving Manufacturers Association. Supporting posts shall be continuous for any shelving unit under 147 inches high. Supporting post splices shall not interfere with the specified shelf placement.

2.6 ASSEMBLED DIMENSIONS

The following tolerances shall apply to the assembled dimensions of the shelving units:

Maximum depth of single row: Nominal shelf depth + 5/16 inch Maximum depth of a double row:

Nominal shelf depth * 2 + 7/8 inch Maximum aisle length: (Nominal shelf width + 1-5/16 inch) * shelving units in row + 2-7/8 inch

2.7 BACK PANELS

Back panels shall have either predrilled or punched mounting holes which match up to mating holes in the supporting posts. Back panels shall be made of metal and shall fully enclose the back of the shelving unit from the floor to the top of the unit. Overlapping of two or more back panels will be acceptable in lieu of one continuous panel from top to bottom for backs over 87 inches high. Back-to-back shelving units shall share a single, common back panel between each unit. The back panels shall be secured to the supporting posts. Shelves shall not be used to secure the back panels into position. Screws used to secure the back panel shall not prohibit the installation of shelves. Back panels of a single row of shelving, not against a wall, shall include extra screws or equivalent to prevent gaps and ripples vertically and horizontally between other back panels and/or the supporting posts.

2.8 SIDE PANELS

Side panels shall have either predrilled or punched mounting holes to match up to mating holes in the supporting posts or shall be factory welded to supporting posts. Side panels shall fully enclose the ends of a shelving unit and shall extend from the top of the shelving unit to the floor. Overlapping of two or more side panels will be acceptable in lieu of one continuous panel from top to bottom for ends over 87 inches high. Side-by-side shelving units shall share a single common side panel between each unit.

2.9 BASE STRIP

A steel strip shall be provided and installed on each shelving unit between the bottom shelf and the carriage.

2.10 FOOT PLATES

Each supporting post shall have a footplate attached and shall be secured to the ground with anchor bolts or to the mobile aisle system as shown on the drawings at the end of this PD. The foot plates shall distribute the weight of a fully loaded shelving unit over the ground. Footplates shall be positioned to not interfere with erection of adjoining units and still provide ease of access for anchoring procedure. Footplates shall be concealed behind the base strips.

2.11 FREESTANDING STRUCTURE

The shelving system shall be designed to be a rigid freestanding structure and shall not be connected to any existing building structure except the floor or mobile aisle. The shelving units shall be designed to resist all shear and uplift forces.

2.12 ASSEMBLY

The Contractor shall assemble, on site, all shelving units including bracing, panels (side and back), and shelves as specified in this appendix in the quantities necessary to meet the storage requirements specified.

2.13 ALIGNMENT

After assembly, the shelving units shall be capable of maintaining the same position in a loaded, partially loaded, or empty capacity. Alignment of each row of shelving units shall be in all three directions, down each row of shelving units, from row to row, and vertically for each shelving unit face.

2.13.1 AISLE ALIGNMENT

Shelving unit face alignment shall be maintained down each row within 1/8 inch from one shelving unit to the next.

2.13.2 SHELVING UNIT VERTICAL ALIGNMENT

Each shelving unit face shall be plumb to within 1/4 inch from the floor to the top of the unit. Each supporting post shall be plumb to within 1/4 inch when examined from any direction. All shims used shall be secured beneath the foot plate. The shims shall be the same size as the foot plate and shall have a hole(s) to correspond with the hole(s) in the foot plate for anchoring.

2.14 Color

The contractor shall submit a color chart for approval by the COTR as a part of the shop drawing submittal.

3. PROCESSING COUNTER

(12) 8’W x 3’9”H x 2’8”D Processing Counters; comprised of 1-3/4” thick hardwood top, one 42”H modular cabinet with five evenly spaced drawers, one set of support legs, and solid metal backpanel completely enclosing its back end to form a processing counter shall be provided in Hanger 9 as shown on the drawings at the end of this PD.

4. FLOW-THROUGH RACK

4.1 Flow-Through Rack Description

Flow-Through Racks shall be comprised of two parts as shown on the drawings at the end of this PD; pallet racks and a low profile span track. The pallet rack section shall meet all specifications as outlined in Section 2 while the low profile span track shall be as follows.

4.2 LOW PROFILE SPAN TRACK

Low profile span tracks shall be conveyor-like carton or tub flow track. The low profile span tracks shall be added to the beams of the flow through rack. The low profile track shall be placed between the beams not on top of the beams. Hangers shall be used to attach the low profile span tracks to the beams. The low profile span track consists of frames and rollers. Six low profile span tracks shall be placed between each set of uprights. Each track shall have a minimum capacity of 30 pounds per linear foot.

4.2.1 TRACK FRAME

Frames shall be constructed with galvanized steel. Frames shall be sized to fit in between the beams. The frame width shall be sized to support the totes listed in 3.2.11.5.

4.2.2 ROLLERS

Rollers shall be full width rollers. Rollers shall be minimum 3/4-inch tempered aluminum with a full length steel axle. Axle shall be minimum 3/16-inch.

4.2.3 PICK TRAY

Pick tray shall be constructed with galvanize or stainless steel. The pick tray shall have an end stop capable of stopping and supporting fully loaded totes as defined in 3.2.11.5. The pick tray will be attached in the back by a hanger as specified in 3.2.11.4. The pick tray shall be supported by pins which are inserted through the front upright leg. The pick tray shall be capable of supporting a minimum of 30 pounds per square foot.

4.2.4 HANGERS

The hangers shall be specifically designed to fit the beams it interfaces. It shall provide support for the low profile span track and the pick tray as required.

4.2.5 TOTES

The Contractor shall provide 200 blue plastic totes.

Totes are nominal size 19-1/2" x 15-1/2" x 10" and may vary depending on manufacture. The totes sizes and color will be approved by the Contracting Officer's Technical Representative.

Source: Simplastics Supply,telephone 800-966-9090, http://www.simplastics.com., model : snt-190 or equivalent.

5. MOBILE AISLE

5.1 DESCRIPTION: One mechanical-assist, mobile storage systems shall be provided to interface with the Bin shelving in Hanger 9. The systems shall be configured as shown on the drawing at the end of this PD and shall consist of:

a. Carriages, including drive chain.

b. A stationary platform.

c. Bin Shelving (as specified in Section 2).

d. Rails.

e. Elevated flooring.

f. Ramps.

g. Anti-movement locks.

h. Mechanical fasteners, anchors, and all other items required to install the mobile aisle system.

http://www.simplastics.com/

5.2 SYSTEM OPERATION: Each carriage shall have a crank mechanisms on those ends indicated in the drawings at the end of this PD. The crank mechanisms shall be turned manually clockwise or counterclockwise to move the carriage in the desired direction. No more than five pounds of force on the crank shall be required to move a fully loaded carriage.

5.3 CARRIAGES: Carriages shall consist of a frame and a drive train, upon which Bin Shelving shall be installed. All carriages shall be capable of supporting a minimum load of 1,000 pounds per carriage foot. No system component shall deflect greater than 0.5 percent of the distance between supports when fully loaded.

No component shall exhibit permanent deformation after the maximum load has been removed.

5.3.1 FRAME: The frame shall consist of aluminum or steel channel, welded or bolted together to fully support a fully loaded rack section. Cross bracing shall ensure rigidity. Bumpers shall be mounted on the frame, spaced appropriately to minimize carriage contact. The frame shall be designed for an integral drive train.

5.3.2 DRIVE CHAIN: Drive chain shall consist of a set of gear reduction sprockets from the crank shaft to the drive shaft.

5.3.3 DRIVE SHAFTS: Drive shafts shall be made of steel and have a minimum diameter of 3/4 inch. Splices or connections to other sections of the drive shaft, drive wheels, and gears shall be slotted for key joints or use shoulder bolts. Drive shafts shall run through pillow block or flanged bearings on either side of the drive wheel. Slave drive shafts shall be driven by use of sprockets and chain from the main drive shaft.

5.3.4 BEARINGS: Bearings shall have a static load rating equal to or greater than the maximum bearing loading, including applicable safety factors, under all operating conditions. Bearings shall be permanently lubricated, securely mounted, and properly housed for protection from physical damage.

5.3.5 WHEELS: Each carriage shall have two wheels per rail. Each carriage shall have at least two drive wheels and at least two guide wheels (drive wheels may also act as guide wheels). All wheels shall be balanced, hardened steel. Wheels which are connected to the drive shaft shall be slotted for key joints. Wheels shall be capable of supporting the fully loaded carriage. Wheels shall not slide or lose contact with the rail.

5.3.6 GUIDANCE SYSTEM: All carriages shall use flanged wheels or guide bearings for guidance over the rails. If flanged wheels are used, each carriage shall have a minimum of two flanged guide wheels. If guide bearings are used, then each carriage shall have a minimum of four sets of guide bearings. Guide bearings shall be precision machined and permanently lubricated.

5.4 RACK SECTIONS: Wide Span or Bin Shelving, which conform to the requirements of Sections 3 and 4, shall be bolted to the carriages and stationary platform as indicated on the drawings at the end of this PD.

5.5 FACE PANELS: Metal, decorative, face panels shall be fastened to both ends of all shelving sections (both carriage units and stationary platforms). Face panels shall provide a rigid mounting location for the cranks and card holders. The face panels shall cover the entire width and height of the shelving section sides.

5.6 ROW IDENTIFICATION: Card holders shall be installed on the face panels for row identification.

Two card holders shall be mounted on each face panel unless the row is accessible from only one side, in that case only one card holder is required. The card holders shall be at least five inches wide by three inches high and mounted at eye level so that operators can locate numbers easily. Row identification cards will be made up by the Government personnel according to their established location assignment practices. A blank card will be provided by the Contractor for each card holder.

5.7 RAIL INSTALLATION: The carriages shall move over minimum one inch high, steel rail assemblies located on top of the floor. After leveling the rails, load bearing grout shall be used to fill in any gaps between the rail assemblies and the existing floor. Rails shall be installed no more than seven feet apart.

5.8 ELEVATED FLOORING: The Contractor shall install elevated flooring for the mobile storage system.

Elevated flooring shall be fire retardant plywood, which is able to support a load of 75 pounds per square foot. A covering (such as “Endura” or equivalent) shall be installed on top of the plywood panels. Flooring shall be sized to fit between the rails, level with the top of the rails, in order to provide a safe walking surface for personnel. The elevated flooring shall be enclosed on all sides by ramps or panels to prevent dust from gathering on the rails and drive chain. Adjacent sheets of subflooring shall be shimmed along the full length of the common side.

5.9 RAMPS: Metal ramps shall be installed to allow an easy transition to the elevated flooring. The ramps shall be provided along the entire length of the sides allowing entrance to the aisles. The ramps shall not extend past the end of the carriages into the main aisle. The grade on these ramps shall not exceed 10 percent.

5.10 ANTI-MOVEMENT LOCK: Each carriage shall be equipped with a mechanism that will lock the carriage in place while the operator is in the aisle.

6. CONTRACTOR PROJECT REQUIREMENTS

6.1 REMOVAL AND DISPOSAL OF EXISTING EQUIPMENT: The Contractor shall remove the following equipment and dispose of it at an off-base facility. Pictures of existing equipment can be found in Section 7 of this PD. Bolts left in floor from existing equipment shall be ground level to the floor and any holes filled in with an epoxy/resin.

Hanger 9

1. Bin Shelving

a. 204 Bays (17 rows of 12 bays) 3’W x 2’D x 10’H

6.2 FORKLIFT AVAILABILITY: A forklift will not be available for the Contractor to use on site.

6.3 RAISED DOCK ACCESS: A raised dock is not available at the installation facility.

6.4 WELDING/CUTTING: No welding or flame cutting is permitted in the facility unless a burn permit is obtained from the Selfridge ANGB Fire Department at least 24 hours in advance.

6.5 DEBRIS: The Contractor may not use the existing dumpsters for debris and shall make provisions to have a dumpster on site if necessary.

6.6 HOURS OF OPERATION: 0800 to 1700, Monday through Friday. Any changes to the installation hours or days must be approved by the Contracting Officer. Working on site during federal holidays must also be approved by the Contracting Officer.

6.7 STAGING AREA: The Contractor may stage property in the installation area.

6.8 EQUIPMENT UNLOADING: The Contractor shall be responsible for unloading of all material.

Air Force personnel will not assist with unloading materials.

6.9 POST AWARD CONFERENCE: Following contract award, a Post Award Conference (PAC) that will be held at Selfridge ANGB is required. As a minimum, the PAC will review all contractual requirements, safety, security, installation timing, installation sequence, installation requirements, compliance with base requirements, etc. At the end of the PAC, a walk-through of the installation areas will take place to allow the Contractor to verify site conditions.

6.10 POST AWARD CONFERENCE REQUIRED ATTENDEES: As a minimum, a Contractor representative and the installation supervisor shall attend the PAC. These individuals shall attend to ensure that issues and decisions affecting the pre-installation and during installation are addressed at that time by personnel with the proper authority and knowledge.

6.11 AS-BUILT DRAWINGS: The Contractor shall provide as-built drawings within 30 days of the project completion. All drawings must be digitally created (e.g. AutoCAD or equivalent).

6.12 TESTING AND INSPECTION: The Government reserves the right to test and inspect all items on site and installation to ensure that it complies with the requirements of this PD.

6.13 ON-SITE CHANGES: The Contractor shall not take direction from any on-site Air Force personnel regarding changes to the installation layout. They do not have the authority to make contract related changes. Requests for changes shall be made through the Contracting Officer.

6.14 INSTALLATION PERSONNEL BACKGROUND CHECKS: Contractors may not be granted a pass to work on base until a background check has been completed. The Contractor is responsible for providing all necessary background check request forms to the designated Government official. From the submission of the forms, background checks average three weeks to complete. The Government is not responsible for delays to the contract due to the Contractor’s failure to comply with the Selfridge ANGB background check policies. Guidance will be provided to the Contractor after award and also addressed at the PAC in Section 7.9.

6.15 WARRANTY PERIOD: The Contractor shall provide a 1-year warranty on all parts and 1-year on labor. No costs shall be incurred by the Government for any service call or equipment repair and/or replacement with the exception of parts and labor required as a result of damage by Government personnel.

6.16 PERFORMANCE PERIOD: The Contractor shall deliver and completely install the storage system within 210-days after receipt of order.

7. DRAWINGS AND PICTURES

DRAWING TITLE

NSL630-04 Storage Aids System Layout, Hanger 9

PICTURE DESCRIPTION

01 Existing Rack, Hanger 9

Picture 01