USGS

Stream-Gaging Cableways

U.S. Geological Survey, Techniques of Water-Resources Investigations, Book 3, Chapter A21

By C. Russell Wagner


Table of Contents

Preface

Glossary

Abstract

Introduction

Purpose and Scope

Site Selection

Hydraulic Considerations

Logistical Considerations

Legal and Regulatory Considerations

Easements

U.S. Army Corps of Engineers Requirements

Federal Aviation Administration Requirements

Other State and Local Laws and Regulations

Design Criteria

Determination of the loo-Year Flood Stage

Measurement of the Span

Loads

Soil Characteristics

Soil Type A

Soil Type B

Design Procedures

Cables

Characteristics and Application

Wire Rope

Tramway or Structural Strand

Design Load Selection

Design Sag

Design Factor

Calculation of Sag

System Hardware Design

Support Structures

Footings

Footing Design

Steel A-Frames

Wood A-Frames

Steel Beams

Trees as Supports

Platforms, Walkways, and Ladders

Grounding for Lightning Protection

Anchorages

Concrete Mass Anchors

Sidehill Anchors

T-Anchors

Rocks as Anchors

Trees as Anchors

Buried Deadmen

Aircraft Warning Devices

Cable Cars

Construction

Excavating for Anchors and Support Structures

Preparing Concrete for Anchors and Support Structures

Installing Rock Anchors

Installing Tree Supports or Anchors

Erecting A-Frames and Cable

Installing Grounds

Grounding Rods

Wire Grounds

Cableways Conforming to Circular 17 Specifications

Documentation

Security

Inspection and Maintenance

Anchors and Footings

Main Cable Supports

Main Cable

Backstay

Cable Connections

Cable Car

Miscellaneous

Nondestructive Testing

Selected References

Appendix I. Notice of Proposed Construction or Alteration

Appendix II. Cableway Design Summary

Appendix III. Painting and Preservation Guidelines

 


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