Portable wetland area and stream crossings

126 Pages·1991·24.6 MB·English

by  Mason, Lola

Historic, Archive Document
Do assume
not content reflects current
scientific knowledge, policies, or practices.

Reserve
states
Wetland
aTG25 Tient of Portable
.M37
1990 Service
Area and Stream
ilogy &
pment
Crossings
—
2400 Timber
December 1990
9024 1203
United States
Department of
Agriculture
National Agricultural Library
WE WANT YOUR COMMENTS
. . .
We would like to know what you think of the new Portable Wetland
Area and Stream Crossings report.
• Does it meet your needs?
Have you tried any of the products?
How
did they perform?
Are there other products that should be investigated?
Name
Agency
Telephone No.
PLEASE FOLD, STAPLE, STAMP AND MAIL
—
USDA
Forest Service
Technology & Development Center
Mason
Attn: Lola
444 East Bonita Avenue
San Dimas, CA 91773
Portable Wetland
Area and Stream
Crossings
Lola Mason
Civil Engineer
Forest Service
Technology & Development Center
San Dimas, California 91773
APR 2 6
1993
CATALOGif\JG PREP.
The Forest Service, U.S. Department ofAgriculture has developed
this information for the guidance of its employees, its contractors,
and its cooperating Federal and State agencies, and is not re-
sponsible forthe interpretation or use ofthis information by anyone
except its own employees. The use of trade, firm, or corporation
names in this publication is for the information and convenience
of the reader and does not constitute an endorsement by the U.S.
DepartmentofAgriculture ofany productorserviceto theexclusion
of others that may be suitable.
i1
TABLE OF CONTENTS
Page No.
INTRODUCTION
I. 1
WETLAND CROSSINGS
3
II.
Crossing Wetland Areas 3
Chunkwood 5
Logs 7
Bridge Decks 8
Foam Inflated Fabric/Inflatable Rubber 10
Aluminum Access/Egress Modules 13
Flexmat 16
Geomatrices 20
Grating 23
Landing Mats 24
Rubber Tires 28
Trackway System 30
Bridge Flooring 33
STREAM CROSSINGS (BRIDGES) 35
III.
Pipe Fascine System 35
Commercial Portable Bridges 37
Hinged Portable Bridge 43
Log Stringer 44
Stress-Laminated and Glue-Laminated Timber Bridges 45
Modular Timber and Trailer-Launched Bridges 48
Grating and Bridge Flooring 50
Substructure 52
IV. CONCLUSION 53
V. APPENDICES 55
A - Manufacturers 55
B - Costs 57
C - Design Data 59
D - Tests 99
ill
ILLUSTRATIONS
Figure No. Page No.
1. Typical wetland area 1
2. Built-up road 2
3. Rudimentary loading platform 2
4. Logging equipment transporting crossing 3
5. Central Tire Inflation Control Panel (in cab) 4
6. Chunkwood chunker machine in operation 5
7. Spreading chunkwood as fill material 6
8. Difficulty in recovering and transporting chunkwood 7
9. Logs, bound together, used as a crossing 8
10. Installing a prefabricated bridge 9
1 1 . Rafting/bridging system 11
12. Utility truck raft/boat 11
13. Fabric form filled with foam 12
14. Installing modular aluminum panels 14
15. Aluminum Access/Egress Modules study 15
16. Flexmat section 17
17. Graphic representation, Flexmat IV system 18
18. Close up, Flexmat details (woven wire, membrane, and clips) 19
19. Graphic representation, cellular confinement system 20
20. Using sand fill in cellular confinement system 21
21 Polyethylene geomatrices used for ramps and crossings 22
.
22. Pultruded fiberglass grating 23
23. Typical sand road that could be used forfiberglass gratings 23
24. M8A1 Steel Landing Mat components 25
25. Ml9 panel components 26
26. M8A1 Steel Landing Mat installation 27
27. Interconnected rubbertire sidewalls. Terra Mat 28
28. Rubbertires used without additional running surface 29
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