Rock Bolts / High Scaling

Rock Bolts / High Scaling (HMR01)

Location: Page, AZ 86040 Coconino County
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Country: United States of America
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N 36° 56.204', W 111° 29.17'

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Inscription

Reclamation: Managing Water in the West

Rock Bolts
Since Navajo sandstone tends to fracture vertically, rock bolts lock rock slabs together, thereby minimizing rock falls into the canyon. These bolts extend from 45 to 75 feet (14-23 meters) into the canyon wall. They are assembled in 10 foot (3 meter) sections. An expansion device on the end ties the bolt solidly to the wall. The plate is 14 inches (36 centimeters) square and 2 inches (5 centimeters) thick. The bolts are cement grouted into the wall.

High Scaling
High scalers of the past are now highly trained rope access technicians. Some of the work is similar, installing chain mesh and installing and checking rock bolts. Other work is more technical, including performing inspections of the dam and abutments, spillway tunnels, penstocks, and outlet pipes.
Details
HM NumberHMR01
Tags
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Placed ByBureau of Reclamation
Marker ConditionNo reports yet
Date Added Thursday, October 2nd, 2014 at 2:16pm PDT -07:00
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Locationbig map
UTM (WGS84 Datum)12S E 456706 N 4087964
Decimal Degrees36.93673333, -111.48616667
Degrees and Decimal MinutesN 36° 56.204', W 111° 29.17'
Degrees, Minutes and Seconds36° 56' 12.24" N, 111° 29' 10.20" W
Driving DirectionsGoogle Maps
Area Code(s)928
Closest Postal AddressAt or near 1970 Lake Shore Dr, Page AZ 86040, US
Alternative Maps Google Maps, MapQuest, Bing Maps, Yahoo Maps, MSR Maps, OpenCycleMap, MyTopo Maps, OpenStreetMap

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