Attachment 1 - Product Comparison Spreadsheet.xlsx
XLSX spreadsheet 14 KB Posted
- Attached to
- HIGH-DENSITY MOBILE STORAGE SYSTEMS
- Solicitation number
- RFP 751 240000002696 2
- Issued by
- Grand Traverse County, Lansing City, Michigan
About this file
This Product Comparison Spreadsheet is part of Request for Proposal No. 240000002696 issued by the Michigan Department of Natural Resources for the Michigan History Center to procure a SpaceSaver High-Density Mobile Storage System. The project involves the acquisition of mechanically assisted mobile storage consisting of six moveable carriages measuring 38 feet 6 inches long by 36 inches deep with six shelf openings per unit, plus four oversized units measuring 72 inches wide by 30 inches deep with three openings per unit. The shelving units feature 42-inch-wide by 18-inch-deep shelves with 4-post design construction. The system includes approximately 950 square feet of black, non-directional ripple vinyl matting for the raised floor and ramp, with a minimum 3/4-inch, 5-ply underlayment grade plywood floor base.
The specifications establish detailed technical requirements for the mobile storage system, including a positive mechanically assisted drive system with chain sprocket drive for each carriage, capable of moving a minimum of 4,000 pounds of load with 1 pound of force applied to the drive handle. The system must feature color-coded visual indicators, safety lock buttons on operating wheel hubs, and rails with a capacity of 1,000 pounds per lineal foot of carriage. Shelving components must include heavy-duty 4-post wedge-lock construction capable of supporting 95 pounds per lineal foot with maximum deflection of L/140, with individually adjustable shelves featuring slots for file dividers. All structural components must be fabricated from welded or bolted steel construction with galvanized components and top-mount carriages explicitly prohibited.
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Text version
Sheet1
| Department of Natural Resources |
| Michigan History Center |
| SPACESAVER HIGH-DENSITY MOBILE STORAGE SYSTEMS |
| Mechanically Assisted Mobile Storage System |
| Request for Proposal No. 240000002696 |
| SpaceSaver High-Density Mobile Storage System Specifications | Detailed Alternate Specifications |
| Brand: __________ | |
| The mechanically assisted mobile storage system consists of storage units mounted on manufacturer’s track-guided carriages to form a compact storage system. | |
| SIX (6) moveable carriages | |
| 38' 6" long by 36 deep | |
| 6 shelf openings per unit | |
| Shelves are 42” wide and 18” deep | |
| Shelving units are 4-post design | |
| FOUR (4) oversized units to house oversize collections | |
| 72" wide and 30" deep with 3 openings per unit | |
| System design permits access to any single aisle by manually moving units until the desired aisle is opened | |
| The carriage/rail system provides uniform carriage movement along the total length of travel, even with unbalanced loads | |
| Carriage System Design and Features | |
| The carriage system consists of a formed structural steel frame with machined and balanced wheels riding on steel rails, surface mounted to the floor | |
| Rails are one piece construction to ensure smooth operation and self-centering of mobile storage units during travel without end play or binding | |
| All bearings used in the drive mechanism are be permanently shielded and lubricated | |
| Movement Controls | |
| Triple arm operating wheels with rotating hand knobs shall be provided on the accessible ends of shelf units, centered on the end panel, located 40 inches from the base of each unit to permit units to be moved to create a single aisle opening | |
| Turning the handle transmits power through chain drive to drive wheels on each carriage | |
| Drive System | |
| The system shall be designed with a positive type, mechanically assisted drive which minimizes end play, ensures there is no play in the drive handle, and that carriages will stop without drifting | |
| The system shall include a chain sprocket drive system for each movable carriage to ensure that carriages move uniformly along the total length of travel, even with unbalanced loads | |
| All system components shall be selected to ensure a smooth, even movement along the entire carriage length | |
| Drive system gearing shall be designed to permit 1 lb. of force applied to the drive handle to move a minimum of 4,000 lbs. of load | |
| A tensioning device shall be provided on each chain drive with provision for adjusting tension without removing end panels | |
| All bearings used in the drive mechanism shall be permanently shielded and lubricated | |
| Safety Features | |
| Color-coded visual indicators shall provide verification that carriages are in a locked or unlocked mode | |
| A single safety lock button, mounted on each operating wheel hub, will permit moving a carriage in either direction to create a new access aisle when pulled out, or locking the carriage when pushed in | |
| Rails | |
| Capacity 1,000 pounds per lineal foot of carriage | |
| Minimum Contact Surface 5/8 inch wide | |
| Rail configuration shall permit attachment to top of structural floor system with provision for leveling rails to compensate for variations in floor surface level | |
| Provide rail connections designed to provide horizontal and vertical continuity between rail sections, to gradually transfer the concentrated wheel point load to and from adjoining rail sections. Butt joints are not permitted | |
| Floor / Ramp | |
| Floor/Ramp Sheathing Minimum 3/4 inch, 5-ply underlayment grade plywood. Particle board sheathing materials are not permitted | |
| Finished flooring materials shall be provided by shelving supplier. | |
| Approximately 950 square feet | |
| Black, Non-Directional ripple vinyl matting, required to be installed on top of the raised floor and ramp | |
| Carriages | |
| Provide manufacturer's design movable carriages fabricated of welded or bolted steel construction | |
| Galvanized structural components and/or riveted carriages are unacceptable. | |
| Design carriages to allow the shelving uprights to recess and interlock into the carriages a minimum of 3/4 inch. Top mount carriages are unacceptable | |
| Provide each carriage with two wheels per rail | |
| Drive / Guide System | |
| Design Provide drive system which prevents carriage whipping, binding and excessive wheel/rail wear under normal operation | |
| Shafts Solid steel rod or tube | |
| Shaft Connections Secured couplings | |
| Wheels | |
| Capacity Minimum load capacity per wheel 3200 lbs | |
| Size Minimum 5 inches, outside diameter drive wheels | |
| Guides Determined by manufacturer; minimum 2 locations | |
| Face Panels | |
| Materials Plastic laminate clad particle board with plastic edging on vertical edges | |
| Shelving | |
| Provide Heavy Duty 4 post designed shelving | |
| Wedge-lock type consisting of uprights, shelves, and shelf supports, designed to be assembled without fasteners or clips | |
| Shelves shall not have any holes on exposed surfaces. Front and back flanges shall be flush with outside faces of posts | |
| Design shall permit individual shelf adjustment and/or removal anywhere along the entire height of uprights | |
| Uprights | |
| Formed from steel sheet to a hollow “tee” shape for intermediate supports and formed angles for end supports | |
| Uprights shall have keyhole slots on inner wall only. Provide with sheet steel panels full height and depth of end uprights | |
| Provide intermediate closed “tee” uprights between adjacent units | |
| Shelves | |
| Form from sheet steel with flanges on all sides and return hem on front and back flanges | |
| Ends shall be formed to clear inside of upright offset panels. Shelves shall be independently adjustable | |
| Provide all shelves with slots for file dividers | |
| Shelf Supports | |
| Form from heavy gauge steel sheet with four solid steel shoulder rivets, two per ear, that interlock with inner wall of uprights | |
| Load Carrying Capabilities | |
| Provide shelf units capable of supporting 95 pounds per lineal foot with maximum deflection of L/140 | |
| Shelves shall exhibit no permanent deflection under fully loaded conditions | |
| Heavy duty shelves are necessary to assure the stability of the shelves when fully loaded |
File details come from the government source that posted it. Updated .