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Archive for June, 2007

PLC (Programmable Logic Controller)

by @ Sunday, June 17th, 2007. Filed under Control and instrumentation, Electrical engineering

File : pdf, 846 pages, 5.2 MB
by Hugh Jack, PhD
TOC
2. PROGRAMMABLE LOGIC CONTROLLERS
2.1 INTRODUCTION
2.1.1 Ladder Logic
2.1.2 Programming
2.1.3 PLC Connections
2.1.4 Ladder Logic Inputs
2.1.5 Ladder Logic Outputs
2.2 A CASE STUDY
2.3 SUMMARY
2.4 PRACTICE PROBLEMS
2.5 PRACTICE PROBLEM SOLUTIONS
2.6 ASSIGNMENT PROBLEMS
3. PLC HARDWARE
3.1 INTRODUCTION
3.2 INPUTS AND OUTPUTS
3.2.1 Inputs
3.2.2 Output Modules
3.3 RELAYS
3.4 A CASE STUDY
3.5 ELECTRICAL WIRING DIAGRAMS
3.5.1 JIC Wiring Symbols
3.6 [...]

Bearing capacity of soils

by @ Friday, June 15th, 2007. Filed under Uncategorized, civil engineering

File : pdf, 1.5 MB, 196 pages
TOC
CHAPTER 1 INTRODUCTION
Purpose and Scope
Definitions
Failure Modes
Factors Influencing Bearing Capacity
CHAPTER 2 NON-LOAD RELATED DESIGN CONSIDERATIONS
General
Earthquake and Dynamic Motion
Frost Action
Subsurface Voids
Expansive and Collapsible Soils
Soil Reinforcement
Heaving Failure in Cuts
Soil Erosion and Seepage
CHAPTER 3 SOIL PARAMETERS
Methodology
Site Investigation
Soil Exploration
CHAPTER 4. SHALLOW FOUNDATIONS
Basic Considerations
Solution of Bearing Capacity
Retaining Walls
In Situ Modeling of Bearing Pressures
Examples [...]

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