Cantilever Racks Specifications

Scope:This task requires the vendor to provide hardware materials for two types of double cantilever racks for use in a long-term (3 years) material creep test study. The racks shall “not” be utilized in a classic fashion where a distributed load is shared between two cantilevered arms. This request is for racks with uniquely “stiff” upper cantilever arms that can support relatively high tip loads. The first rack design shall be capable of supporting a tip load of 1700 lbs and have a height of 14 feet. The second rack design shall be capable of supporting a 4500 lb tip load and have a height of 20 feet. Additional design details are provided in figures 1-5. Associated bolts and washers shall be identified, however not supplied. Bolts shall be purchased separately from another vendor and submitted for certification through NASA LaRC Quality Assurance (QA) department. Vendor shall supply cantilevered arm design and load capability calculation. Pre-owned, used, refurbished, or new-cantilevered rack systems are admissible, as long as they meet load and height requirements.   Rack dimensions, load capacity requirements, and application are provided in following slides.  ITEM 1: Quantity 45-column type double cantilever rack hardware with dimensions as shown in following slides

Anchor wedges shall not be utilized for 5-column type. Current setup location shall not allow anchor points to be drilled into the concrete floor. Please provide large enough base I-beams, and diagonal/horizontal bracing for rack stability to meet load requirements.1700 lbs max tip load14-feet highIdentify bolts and washers needed for assemblyWritten assembly procedures Cantilevered arm design calculations for load levels

ITEM 2: Quantity 1 6-column type double cantilever rack hardware with dimensions as shown in following slides

Anchor wedges shall be required for 6-column type Rack4500 lbs max tip load20-feet highIdentify bolts and washers needed for assemblyWritten assembly procedures Cantilevered arm design calculations for load levels

  

Double Cantilever Rack 14.0 feet tall

Cantilever Rack, 5-column type

Deliverables: • quantity: 4 double cantilevered racks, 14-feet tall • Each rack shall consist of 5 columns, 10 cantilever arms, 10 support base beams, and bracing supports• Identify required bolts/washers • Assembly procedure

Perspective view

14 feet

Side view Front view

6 feet

2 feet

1700 lbs Max tip load

Cantilever Rack, 5-column type, one-segment view

Large enough for stability

Side View

Front View

Vertical column diameter

1700 lbs Max tip load

2 feet

Max tip load

Max tip load

Diagonal and/or Horizontal bracing between columns.. Base beam

Base beam

The top most area between each column shall need to remain free of bracing hardware 2 feet down….

2’

Double Cantilever Rack 20.0 feet tall

Cantilever Rack, 6-column type

Deliverables: • quantity:1; 20-feet tall, 6 columns, 12 cantilever arms, 12 support base beams, and bracing hardware• Identify required bolts and washers • Assembly procedure

Perspective view

20feet

Side view Front view

4 feet

2 feet

4500 lbs Max tip load

Cantilever Rack, 6- column type, one segment view

4 feet

Side View

Front View

Anchors Wedge

4500 lbs Max tip load

Vertical column diameter

Diagonal and/or Horizontal bracing between columns.. Base beam

Test Material

Major Components• Double Cantilever Rack• Concrete culvert assembly• Kevlar material straps • Connecting hardware (chains, shackles, etc) • Restraint/stability wires • Culvert capture system

Application: Woven Material Creep Test Facility

Test Facility 20.0 feettall

5.5 feet tall

Double Cantilever Rack Stability

wires

Concrete Culvert Assembly

Culvert capture