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Mezzanine Rack Supported
   The installation of a mezzanine is the ideal solution in order to take full advantage of the surface area of industrial premises or any other premises, since the height of a building can be put to full use and the investment in land will thus be reduced.
    SHELF mezzanine systems are totally dismountable, which means that all elements are recoverable, and their structure, dimensions and location can easily be modified.
    Mezzanines are a cost-effective way to increase capacity of an area for additional manufacturing space or storage. Rack or Shelving Supported mezzanines consist of a platform that is supported by shelving or pallet rack configured underneath.
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Use this sample to prepare your own detailed specifications.  If you need assistance, please feel free to contact us at +86-0510-83590338 or Email sales@wxsulf.cn.

I. General

1. Mezzanine shall be prefabricated custom-designed unit.
2. Mezzanine shall be free-standing and shall not use existing walls or building columns for vertical or horizontal support.
3. Mezzanine structure shall be capable of being erected, dismantled and relocated with hand tools.
4. Mezzanine to be designed for add-on capability; columns and beams to have capacity and appropriate design to accept add-on units for future expansion.
5. Final mezzanine drawings shall be certified by a professional Engineer in the state in which installation will occur and calculations and seal are available.
6. Mezzanine to be fabricated by confirmed certified welders.

II. Design

1. Specifications
1. Structural Steel design shall meet or exceed the requirements of the American Institute of Steel Construction (AISC) " Specification for Structural Steel Buildings/ Allowable Stress Design and Plastic Design 6/1/89"
2. Bar joist design shall meet or exceed the requirements of the Steel Joist Institute (SJI) " Standard Specifications for Open Web Steel Joist H Series," adopted 11/7/83.
3. OSHA (Occupational Safety & Health Administration) regulations shall be met or exceeded.
4. Other codes specified by the customer, such as "National Building Code" by BOCA, "Uniform Building Code" by ICBS, or "Standard Building Code" by SBCCA, shall be met.

2. Loads and Deflections
1. Mezzanine design shall meet the customer's requirement for live load.
2. Mezzanine structure shall be designed to withstand horizontal forces as required by the seismic zone at the site of installation.
3. Mezzanine stairs and landings shall be designed for a live load of 100 psf.
4. Deflection of all mezzanine components under full live load shall not exceed 1/360 of span
5. Special mezzanine requirements for concentrated load shall be met when specified by the customer.

III. Structure

1. Columns
1. Mezzanine column spacing shall meet field conditions and requirements of customer.
2. Column size shall be a minimum of 5"x5"x3/16" square tube.
3. Baseplates shall be a minium size of 8"x8"x1/2" and anchored with four (4) 1/2" dia. anchor bolts.

2. Structural Steel Support Members and Bar Joists
1. All field connections shall be bolted
2. Wherever possible, beams shall rest on top of columns
3. Bottom cord of bar joists shall be extended to columns and attached.
4. Bridging as per manufacturers design specifications.

3. Mezzanine Stairs
1. Stair shall be all welded or bolt type construction and produced with all structural steel members.
2. Stairs shall meet all design criteria specified for the mezzanine (above)

4. Guard Rail
1. Railings shall be minium 1 1/4" x 14 ga. horizontal square tube or 1 1/4" structural welded round pipe with schedule 40 thickness. All railings rounded or square to have continuous top rail with smooth transitions from one level to another.
2. Intermediate rail spacing to meet applicable codes
3. All railing locations to be provided with 4' x 1/8" structural kickplate.

IV. Materials

1. Structural Steel Beams shall be hot rolled wide flange and meet the requirements of ASTM Spec A36 " Standard Specification for Structural Steel" ( minimum yield strength of 36,000 pounds per square inch; FY=36KSI).  All steel members to be of domestic origin to meet or exceed AISC Standards

2. Bar Joists shall meet the requirements of the Steel Joist Institute referred to above and must be produced of structural components of domestic origin.

3. Columns and Handrails shall be square tube and shall meet the requirements of ASTM Spec. a500 titled " Cold Formed Welded and Seamless Carbon Steel Structural Tubing in Rounds and Shapes" (minimum yield strength of 45000 psi.)

4. Structural Bolts shall conform to ASTM Spec A325 " High Strength Bolts for Structural Steel Connections". Bolts must be a minimum of 3/4" diameter except for bar joist connections which require no less than two (2) 1/2" diameter structural bolts per joist.  Bolts to be of domestic origin to ensure structural integrity.

 
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