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New Code Editions Increase Seismic Forces

IBC 0218 Seismic Changes
More and more states are adopting newer codes- in particular IBC 2018, which references ASCE7-16.  An example of this is the 2019 Oregon Structural Specialty...

Drive-In Columns – Slenderness

Drive-In Rack Column Selection
The Drive-in rack configuration is unique because the fork-lift actually enters into the storage bay. For this reason, there cannot be a cross-bay beam...

Correct Installation of Teardrop Style Beams

Beam Failure Tear From Post
Teardrop (Interchangeable) style racking is a very common form of boltless racking. The beam connectors have “pins” that are manufactured as part of the...

Mixing of Rack Components From Different Manufacturers

Different Rack Manufacturers
Many rack manufacturers of both structural and roll-formed racks make rack components that can be successfully connected to a structure or component of a...

Over-strength Design Requirement (Ω = 2) in ASCE7 Specification for Baseplate...

Seismic Baseplate Uplift Calculation
The ASCE7 Specification is the document that the International Building Code refers to for applied loading for design of structures. Storage rack are covered...

Upright Table Interpretation

Pallet Rack Upright Capacity Table
Customers always want to get the highest upright capacity with the lowest possible gauge so they can keep their costs down. Sometimes they get...

How to Best Protect the Truck-Aisle Column

Straddle Protector - 2 Anchors
Fork truck traffic down the aisles can be the biggest threat to pallet rack uprights. The bottom portion of the truck-aisle column is the...

“Checker-Boarding”: Removal of First Beam Level in Every Other Bay

Pallet Rack Beam Removal - Checker-Boarding
At UNARCO we often get asked if users can remove the first level load shelf in alternating bays to store taller pallets on the...

When is a 4” Pallet Rack Column a Better Choice?

Pick Module with 4x3 Rack Column Size
UNARCO, as well as other rack companies, offer both 3” wide and 4” wide columns. Often, a 3” column is quoted out of habit...

Tying Racks to the Building Wall or Roof

Warehouses often move rack around from the originally designed layout to help store items more efficiently or help SKU adjacencies. Moving pallet racking is...