DREDGING EQUIPMENT

0,72

MB

40

stron

5037

ID

UNITED STATES ARMY CORPS OF ENGINEERS

2005

rok

CONTENTS

Section 1. INTRODUCTION. 38.2-l

1. SCOPE 38.2-l

2. CANCELLATION. 38.2-l

3. RELATED CRITERIA . 38.2-l

4. PLANNING . 38.2-1

a. Jurisdiction . 38.2-1

b. Work Accomplishment . 38.2-l

Section 2. DREDGING DESIGN . 38.2-2

1. PERMITS AND OTHER LEGAL CONSIDERATIONS 38.2-2

a. Corps of Engineers, Department of the Army 38.2-2

b. Disposal of Dredged Material . 38.2-2

c. Environmental Considerations . 38.2-2

2. SITE INVESTIGATIONS . 38.2-2

a. Hydrographic Surveys and Mapping . 38.2-2

b. Map of Disposal Area . 38.2-3

c. Characteristics of Area To Be Dredged 38.2-3

d. Cross Sections 38.2-3

e. Test Borings . 38.2-3

f. Test Dredging 38.2-4

3. PROJECT DEPTH 38.2-4

4. OVERDEPTH DREDGING38.2-4

a. Overdepth Allowance . 38.2-4

b. Designed Overdepth 38.2-4

c. Mandatory Maximum Dredged Depths . 38.2-5

5. OVERWIDTH DREDGING 38.2-5

6. SPOIL AREAS AND UTILIZATION OF SPOIL . 38.2-6

a. Utilization of Spoil . 38.2-6

b. Environmental Considerations . 38.2-6

c. Dikes 38.2-6

d. Spoil Data 38.2-8

7. REMOVAL OF ROCK . 38.2-8

8. RECOVERY OF SUBSTRATUM (UNDERCUTTING) 38.2-8

Section 3. TYPES OF DREDGING EQUIPMENT . 38.2-9

Part 1. MECHANICAL DREDGES38.2-9

1. BUCKET DREDGE 38.2-9

a. Description . 38.2-9

b. Capacity and Depth 38.2-9

c. Uses, Advantages . 38.2-9

d. Disadvantages 38.2-9

6. NAVY HYDRAULIC DREDGE INVENTORY . 38.2-23

MOUNTING CONVENTIONAL, LAND-BASED EXCAVATION EQUIPMENT ON A BARGE. .

DIPPER DREDGE . .

a. Description .

b. Capacity and Depth

c. Advantage .

d. Disadvantages . .

LADDERDREDGE . .

a. Description .

b. Capacity and Depth . .

c. Use .

HYDRAULIC DREDGES . .

PLAIN SUCTIONTYPE. .

a. Description .

b. Capacity and Depth . .

c. Uses, Advantages .

d. Disadvantages . .

e. Length of Discharge Pipe .

CUTTER HEAD TYPE .

a. Description .

b. Capacity and Depth . .

c. Uses, Advantages . .

d. Disadvantage .

e. Length of Discharge Pipe .

DUST PAN TYPE 38.2-19

a. Description . 38.2-19

b. Capacity and Depth 38.2-19

c. Uses, Advantages . 38.2-19

d. Disadvantage . 38.2-19

HOPPER DREDGE 38.2-19

a. Description . 38.2-19

b. Capacity and Depth 38.2-19

C. Uses, Advantages . 38.2-22

d. Disadvantages 38.2-22

SIDECAST DREDGE . 38.2-22

a. Description 38.2-22

b. Capacity and Depth 38.2-22

C. Use . 38.2-23

d. Disadvantage . 38.2-23

Part 3. MISCELLANEOUS EQUIPMENT . 38.2-23

1. SECTIONALIZED DREDGES 38.2-23

a. Description . 38.2-23

b. Use . 38.2-23

2. DUMP SCOWS . .

a. Side Dump ..

b. Bottom Dump . 38.2-26

3. PIPELINES 38.2-26

Section 4. ECONOMICS OF DREDGING 38.2-26

1. BASIC PRINCIPLES . 38.2-26

a. Depth 38.2-26

b. Other 38.2-26

2. RELATIVE COSTS OF REMOVAL BY DIFFERENT TYPES OF EQUIPMENT 38.2-26

3. CONCEPTUAL OR PLANNING COST ESTIMATES 38.2-27

References Reference-1

APPENDIX: Metric Conversion Factors . A-1