Create an Account - Increase your productivity, customize your experience, and engage in information you care about.
KAYSVILLE CITY CORPORATION
Request for Proposal
Kaysville City is accepting proposals from qualified companies, to supply and construct a Stressed Membrane Structure for sand and salt storage at their existing Operations Center located at 721 West Old Mill Lane in Kaysville. The structure shall be enclosed with an open front. The structure shall contain approximately 8,000 square feet of useable space, with an interior center height a minimum of 25 feet.
The structure will be placed on an existing asphalt pad and meet the following minimum standards.
1. No exterior guy ropes or cables shall be used for anchoring the structure.
2. There will be no exposed exterior horizontal purlins.
3. The structure shall be completely clear-span with no interior supports of any description.
4. Any required miscellaneous steel components such as anchor bolts, cable bracing, base assemblies or attachment brackets must be galvanized.
5. All bolts used shall be galvanized with a minimum of Grade 5 specification.
6. The structure shall be designed to meet the wind loads as outlined in IBC 2015, 150 mph, exposure ‘C’, Risk Category II.
7. The stressed membrane structure must be designed to shed all snow off the roof. (In accordance with the Alternative Design Section of the building code.)
8. All structural components must have the following minimum structural and mechanical properties.
9. All material used in the structure shall carry a pro-rata guarantee of not less than 50 years.
10. The architectural membrane, when assembled and tensioned, shall be absolutely wrinkle free, and shall remain so indefinitely in hot and cold temperatures.
11. In order to provide the introduction of natural light for daytime use, a continuous section of highly translucent white architectural membrane (daylight panel) shall be incorporated into the membrane along the peak of the structure. To minimize internal solar gain in the structure, the balance of the exterior architectural membrane shall be complete with a blackout layer.
12. All exterior architectural membrane on the structure shall come complete with a protective exterior polyurethane top coat, and a 15-year pro-rata guarantee. The membrane will possess the following minimum quality and fire rating specifications as shown below;
Basic Fabric Type (Scrim)
Adhesion ASTM D4431
Method ASTM D3776
Acrylic Top Coat (Rain Kleen)
Tongue Tear (lbs)
Method ASTM D2261
Method ASTM D5034
Strip Tensile 1"
Hydrostatic Resistance Burst
Pass -40° F
1. NFPA 701
Flame Spread Index <25.Smoke
2. ASTM E84
Development rating <450
13. Upon award the Structure Supplier will be required to supply detailed drawings and supporting calculations for the structure, including ground ties (assume soil unit weight = 110 pcf), stamped by an engineer certified in the State of Utah.
The proposal shall include;
The cost to supply and erect the structure including but not limited to all materials, labor, delivery, engineering, incidentals, and equipment.
Specifications for the proposed structure that meet the minimum design requirements listed herein.
All included warranties.
Verification that the Structure Supplier is an established manufacturer with at least 10 years of experience in the design, fabrication and delivery of structures with the same basic specifications as above.
Five (5) examples of similar structures that have been erected. Contact names and numbers as well as physical address of the five (5) sites must be submitted. (Exact same size of the structure not required.)
The Owner will select the proposal that is determined to be the best overall value. Factors including initial cost, long term maintenance, usable space, durability, and timing for delivery and construction will be considered.