Types of Upright Frame
“X” braced and “Z” braced
Components of upright frame
Column, Horizontal, Diagonal and Base Plate
Components of Pallet Rack System
Upright Frame and Shelf Beam
Components of Shelf Beam
Shelf Beam and Shelf Beam Connector
Differences between X-Braced and Z-Braced
Z-Braced more cost effective
Z-braced better suited for low traffic or guided systems
X-Braced offers more support
X-Braced better to withstand warehouses where damage more likely
Three Factors of Pallet Rack Design
Unit to be stored
Method of handling
Area to put it in
Four Pallet Types
2-Way Pallet - Regular Pallet
4-Way Pallet - Additional openings cutout on sides
Skid Pallet - No Bottom, can only be handled one way
Slave Pallet - Stays with load throughout, typically a sheet of plywood
3 Unit Considerations for Pallet Rack System
The Pallet(s) The Product(s) The Container(s)
Seven Critical Factors of Handling Method
- Elevated Mast Height
- Lift Capacity and Downrating
- Base Leg Opening (Inside and Out)
- Required Aisle Dimension
- Collapsed Mast Height
- Outrigger Dimension
- Vehicle Types
7 Considerations for Rack Area
- Warehouse Columns (Size and spacing)
- Hanging Heaters
- Utility Lines
- Lights/Lighting
- Sprinkler/Fire Hose Locations
- Downspouts
- Seams in the Floor
What are three dimensions of Load Interface Detail?
- Load Height
- Lift Off
- Beam Depth
Load Height
Product Height + Height of Pallet
Lift Off
Distance from Top of Product to Bottom of Beam.
What determines Beam Length and Width
Beam Length is determined by the distance between Products and between Products & Columns
Width is determined based on Beam Length and Product Load Weight (deflection also a consideration)
Pallet Supports
Between shelf beams, helps support the full weight of the pallet
Safety Bar
Bars between the beams
Beam Brace
Between beams, prevents beam from rotating, does not support pallet at all
Row End Protectors
Beams placed at the end of each row to protect the columns.
Boxing
Can be used in front aisle side column.
-Increases frame capacity and impact resistance
Rub Rail
Protect Columns from damage
- Distributes impact from rear column to frame
- Prevents column from twisting
Post Protectors
Used to protect front columns
3 Types: Welded-On, Bolt-On, Bull Nose
