Clean Columns was developed to return the lightest column section that can be used without stiffeners and/or doubler plates to develop a specified percentage of a selected beam’s plastic moment capacity, based on the criteria in AISC Design Guide Series #13 and the 2005 AISC Specification for Structural Steel Buildings.
The design of the column for axial load capacity is not considered.
Column load take down & design for symmetrically reinforced rect columns bent about two axes.
Soils are aggregates of mineral particles, and together with air and/or water in the void spaces, they form three-phase systems. A large portion of the earth’s surface is covered by soils, and they are widely used as construction and foundation materials. Soil mechanics is the branch of engineering that deals with the engineering properties of soils and their behavior under stress.
This book is divided into eight chapters—“Soil aggregate, plasticity, and classification,” “Stresses and strains—elastic equilibrium,” “Stresses and displacement in a soil mass,” “Pore water pressure due to undrained loading,” “Permeability and seepage,” “Consolidation,” “Shear strength of soils,” and “Settlement of foundations.”
An Introduction to Geotechnical Engineering is intended for use in the first of two-course sequence in geotechnical engineering usually taught to third- and fourth-year ungraduate Civil Engineering students.
We assume that students have a working knowlege of ungraduate mechanics, especially statics and mechanics of materials (including fluids).
A knowledge of basic geology, although helpful, is not essential. We introduce the « language » of geotechnical engineering in the first course, that is, the classification and engineering properties of soils.
Once the student have a working knowledge of how soil behaves as an engineering material, he/she can begin to predict soil behavior, and in the second course , to carry out the design of simple foundations and earthquake systems.
By Jie Han
Ground improvement is popular in many countries to solve difficult geotechnical problems, especially when construction necessarily occurs in problematic soils and under difficult geotechnical conditions.
Many recent developments in equipment, materials, and design methods have made ground improvement technologies more effective, efficient, and economic. However, the state of practice for most ground improvement technologies is that the practice is ahead of theory. Some contractors have developed their proprietary technologies, design methods, and construction techniques for their competitive advantages.
Most of the existing books on ground improvement are focused on the concept, application, and case study. However, few books have been devoted to the principles and design methods of ground improvement. This book covers both theoretical and practical aspects in the design and construction of a variety of ground improvement technologies commonly used in practice.
By T.H.G. Megson
The purpose of this book is to provide, in a unified form, a text covering the associated topics of structural and stress analysis for students of civil engineering during the first two years of their degree course.
The book is also intended for students studying for Higher National Diplomas, Higher National Certificates, and related courses in civil engineering.
Frequently, textbooks on these topics concentrate on structural analysis or stress analysis, and often they are lectured as two separate courses. There is, however, a degree of overlap between the two subjects and, moreover, they are closely related.
In this book, therefore, they are presented in a unified form which illustrates their interdependence. This is particularly important at the first-year level where there is a tendency for students to ‘compartmentalize’ subjects so that an overall appreciation of the subject is lost.
There have been many significant changes in the construction sector within the past decade. Notably, the sector has witnessed the growth of partnering and alliancing which require better management of the supply chain and increasing use of the NEC Contract (NEC3) which requires a team-based proactive approach to project delivery.
New financial models have been developed including Private Finance Initiative (PFI), Local Asset Backed Vehicles (LABVs), and variants of these in which private sector consortia design, build, own, and operate public facilities in partnership with the public sector.
Great advances have been made on the technical front with the growth of Building Information.
Rectangular hollow section (RHS) trusses can be formed by welding together single- or double-miter cut RHS web members and RHS chords. Web members may either be gapped or overlapped at the chord face.
Overlapped connections (or joints) are stiffer and stronger than gapped connections, but both are considered to be “semi-rigid” (neither pinned nor rigid).
Lack of connection rigidity is well-known to affect the force distribution and deflections in RHS trusses
The decision to prepare a manuscript for a book titled CABLE SUPPORTED BRIDGES was taken by Niels J. Gimsing in 1980 following his three-year affiliation as an adviser on bridge technology to Statsbroen Store Bœlt—the client organization established to design and construct a bridge across Storebælt (Great Belt) in Denmark.
During the design period from 1976 to 1979, a large number of different designs for cable-stayed bridges (with spans up to 850 m) and suspension bridges (with spans up to 1800 m) were thoroughly investigated and it was during that period the idea matured to write a book covering both cable-stayed bridges and suspension bridges.
The chance to prepare the manuscript came in 1979 when the Danish Government decided to postpone the construction of the Storebælt Bridge and to keep the design work at rest for a period of five years.
