Mike Parnell

Estimating a load’s approximate weight is always an important part of any rigger’s checklist and must be done before choosing the rigging system. Have some fun and estimate the weight…

Estimating a load’s approximate weight is always an important part of any rigger’s checklist and must be done before choosing the rigging system. Have some fun and estimate the weight…

With four quick lifts, raising the load only a few inches, a rigger can confirm: a) The load’s estimated weight b) The load’s approximate center-of-gravity (CG) c) The approximate load…

This brain teaser is part of Mike’s Rigging Mysteries available through the  iti.com/bookstore. Enjoy! Check your answers below. Match the 10 questions below with the correct answers, A-J. ____ What…

In this issue of the Professional Rigger, let’s evaluate an accident. Read the case study to the right and identify the improper practices based on the list given. Answers provided…

Any time 2-hook pick is made, the crew needs to determine the weight carried by each hook, based on the center-of-gravity (CG) of the load. Review the schematic below and…

A sincere “Thank You” to our steadfast readers and supporters, who over the years have been entertained by the Professional Rigger. We thought that a fun way to kick off…

This workshop requires the reader to consider the CG (center of gravity) of a load and the desired weight distribution to the tractor and trailer axles respectively. Often a rigger…

A crew must load out a short bridge column which will be used in a creek bed to support one end of a light bridge deck. The crew rigged the…

Sometimes we can sharpen our skill and knowledge level with a series of questions which cause us to draw from our experiences with cranes and rigging. Try your hand at…