Tips & News - April 2011

GROUTED ROCK ANCHOR NEW SOLUTION FOR BROKEN ROCK TIPS NEWS &

helps improve lightning protection WEB APPLICATION TOOL NEW OHIO BRASS

Installing anchors in rocky soils is a difficult and expensive task for utilities. For solid rock conditions, our wedge-style rock anchors work great. Now, for broken rock conditions too tough for a screw anchor to penetrate, our new Grouted Rock Anchor can be just the right solution!

Visit http://www.hpsapps.com/protec- talite/ to use a new tool to help you evaluate lightning performance for typi- cal 34.5, 69, 138 and 230 kV lines. Using the tool, you can determine impact of structure footing resistance on shield wire protection while you see the impact of adding surge protection to line insula- tion. You can study the impact of various arrester spacings, too. An easy link takes you to technical field support for more detailed analysis of specific lines. It’s quick, easy and informative. Try it today!

GROUTED ROCK ANCHORS Application Table for Cat. No. W104-0004 and W104-0055

Allowable Load Capacity for 6" dia x 1' long

Ultimate Bond Stress between Rock & Grout psi

grout column lb/ft of length

Granite Basalt

200

1500

Dolomitic Limestone

Soft Limestone Slates & Hard Shales

100

7500

Sandstone

Soft Shales

30

1800

www.hpsapps.com/protectalite/

Soil Class 5

8

600

For details on our Grouted Rock Anchor, see Catalog Supplemental Bulletin 4-24.1&2 on our web site or request your copy today! Grouted Rock Anchor SystemBenefits • Employs our RR or SS extensions and guy adapters • Uses standard grout sold at home center stores • Holding capacity chart provides engineering reference for various rocks and soils

For all our Anchors and Anchor Tools,see our Catalog Sections 4 & 4A on our web site.

For more information, contact your Hubbell Power Systems repre- sentative, fax 573-682-8714 or e-mail hpsliterature@hps.hubbell.com.

14 www.hubbellpowersystems.com