Standard Specifications for Construction of Roads and Bridges on Federal Highway Projects PDF Download
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Author: United States. Federal Highway Administration
Publisher:
ISBN:
Category : Bridges
Languages : en
Pages : 726
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Book Description
Author: United States. Federal Highway Administration
Publisher:
ISBN:
Category : Bridges
Languages : en
Pages : 726
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Book Description
Author: Intermountain Forest and Range Experiment Station (Ogden, Utah)
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 904
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Book Description
Author: Ken Skorseth
Publisher:
ISBN:
Category : Gravel roads
Languages : en
Pages : 112
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Book Description
The purpose of this manual is to provide clear and helpful information for maintaining gravel roads. Very little technical help is available to small agencies that are responsible for managing these roads. Gravel road maintenance has traditionally been "more of an art than a science" and very few formal standards exist. This manual contains guidelines to help answer the questions that arise concerning gravel road maintenance such as: What is enough surface crown? What is too much? What causes corrugation? The information is as nontechnical as possible without sacrificing clear guidelines and instructions on how to do the job right.
Author: United States. Forest Service. Engineering Staff
Publisher:
ISBN:
Category : Bridges
Languages : en
Pages : 168
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Book Description
Author: United States. Forest Service. Engineering Staff
Publisher:
ISBN:
Category : Bridges
Languages : en
Pages : 252
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Book Description
Author: Intermountain Forest and Range Experiment Station (Ogden, Utah)
Publisher:
ISBN:
Category : Mines and mineral resources
Languages : en
Pages : 68
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 192
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Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1434
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Book Description
Author: Martin F. Jurgensen
Publisher:
ISBN:
Category : Ecology
Languages : en
Pages : 398
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Book Description
Timber harvesting has a pronounced effect on the soil microflora by wood removal and changing properties. This paper gives a perspective on soil biology-harvesting relationships with emphasis on the northern Rocky Mountain region. Of special significance to forest management operations are the effects of soil micro-organisms on: the availability of soil nutrients, particularly nitrogen; the decay of woody plant material; and tree disease incidence. At present, no widespread detrimental impact on site quality in the northern Rocky Mountain region can be directly attributed to harvesting effects on the soil microflora.
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1424
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