Tag: sling angle
Precast wall being lifting with A.L. Patterson lifting and handling products.
Share Button

“If it is a 4-Ton Lifting Pin Anchor (dog bone) it must lift up 4-tons (8,000 lbs.)” It is a common misconception within the industry that we would like to address in today’s blog. The tonnage in the title of the anchors generally refers to the lifting capability of the anchor itself. However, depending on [...]

12_3_13
Share Button

Sling Angle Load Factors For Face Lifting: Oblique sling angles that are less than 90° will increase loads to the anchor. This factor MUST be considered when determining the proper anchor capacity, length and type. The load increases by a factor of two at a 30° sling angle. Angles that are less than 30° are [...]

3-4-Point-pick
Share Button

In our previous blog post (Precast Rigging Information: Sling Angle & Dynamic / Shock Loading), we talked about safety while lifting. In this blog post, we will cover the proper loading of anchors with precast slabs, specifically with three (3) or four (4) anchors. As always, all devices should be inspected before being used and [...]

Sling_angle_shock_loading
Share Button

In order to lift precast products, special planning and equipment is necessary. Most times, the precast being lifted is very heavy and any type of failure could result in serious, dangerous results. Rather than plan for the actual weight of the product, you should plan for the “effective weight” of a lift. Certain degree angles [...]