Principles of Foundation Engineering, Eighth Edition

Principles of Foundation Engineering, Eighth Edition

Braja M. Das

Preference :

In the general sense of engineering, soil is defined as the uncemented aggregate of mineral grains and decayed organic matter (solid particles) along with the liquid and gas that occupy the empty spaces between the solid particles. Soil is used as a construction material in various civil engineering projects, and it supports structural foundations. Thus, civil engineers must study the properties of soil, such as its origin, grain-size distribution, ability to drain water, compressibility, shear strength, loadbearing capacity, and so on. Soil mechanics is the branch of science that deals with the study of the physical properties of soil and the behavior of soil masses subjected to various types of forces. Rock mechanics is a branch of science that deals with the study of the properties of rocks. It includes the effect of the network of fissures and pores on the nonlinear stressstrain behavior of rocks as strength anisotropy. Rock mechanics (as we know now) slowly grew out of soil mechanics. So, collectively, soil mechanics and rock mechanics are generaly referred to as geotechnical engineering.

Foundation engineering is the application and practice of the fundamental principles of
soil mechanics and rock mechanics (i.e., geotechnical engineering) in the design of foundations
of various structures. These foundations include those of columns and walls of
buildings, bridge abutments, embankments, and others. It also involves the analysis and
design of earth-retaining structures such as retaining walls, sheet pile walls, and braced
cuts. This text is prepared, in general, to elaborate upon the foundation engineering aspects
of these structures.



Content :
  • Introduction
  • Geotechnical Properties of Soi
  • Natural Soil Deposits and Subsoil Exploration
  • Shallow Foundations: Ultimate Bearing Capacity
  • Ultimate Bearing Capacity of Shallow Foundations: Special Cases
  • Vertical Stress Increase in Soil
  • Settlement of Shallow Foundations
  • Mat Foundations
  • Pile Foundations
  • Drilled-Shaft Foundations
  • Soil Improvement and Ground Modification


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Gravity Sanitary Sewer Design and Construction

Gravity Sanitary Sewer Design and Construction

Paul Bizier

Preference :

Wastewater treatment and collection systems are a major expenditure of public funds, but the wastewater system’s function is rarely acknowledged and sewers are seldom seen by the public. Sanitary systems are essential to protecting the public health and welfare in all areas of concentrated population and development. Every community produces wastewater of domestic, commercial, and industrial origin. Sanitary sewers perform the vitally needed functions of collecting these wastewaters and conveying them to points of treatment and disposal. The various stages of design and construction of sanitary sewer projects require an understanding of the objectives of each stage of the project and of the responsibilities and interests of the parties involved. Separate sanitary and storm sewers are highly desirable and are used, with few exceptions, in new systems. The major advantages of separate systems, including wastewater treatment plants, are the protection of watercourses from pollution and the exclusion of stormwater from the treatment system with a consequent saving in treatment plant construction and operating cost. Combined sewers are frequently encountered in older communities where it may be extremely difficult or costly to provide separate systems. Separation is desired, where economically feasible, to reduce the magnitude of facilities and energy demand of treatment works.



Content :
  • ORGANIZATION AND ADMINISTRATION OF SANITARY SEWER PROJECTS
  • SURVEYS AND INVESTIGATIONS
  • HYDRAULICS OF SEWERS
  • DESIGN OF SANITARY SEWER SYSTEMS
  • APPURTENANCES AND SPECIAL STRUCTURES
  • MATERIALS FOR SEWER CONSTRUCTION
  • STRUCTURAL REQUIREMENTS
  • CONSTRUCTION CONTRACT DOCUMENTS
  • TRENCHLESS DESIGN AND CONSTRUCTION


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