Jim Crews

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Over-strength Design Requirement (Ω = 2) in ASCE7 Specification for Baseplate and Anchor Bolt Seismic Design

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

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

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

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?

UNARCO, as well as other rack companies, offer both 3” wide and 4” wide columns. Often, a 3” column is quoted out of habit...

Breaking

Thin Shims for Racks with Large (High) Aspect Ratio

When we discuss racks with a large or high...

Load Capacity Requirements in the new RMI Storage Rack Standard ANSI MH16.1-2021

The revised American National Standard for storage rack, ANSI...

Anchor Bolts: Nominal Embedment vs. Effective Embedment

There is often confusion regarding what is meant by...

Anchor Bolt Embedment Tables

On projects in elevated seismic zone where there is...
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