EB 220 Life Cycle Cost Analysis A Guide for Comparing Alternate Pavement Designs
Author: Steven M Waalkes | Size: 1 MB | Format:PDF | Quality:Original preprint | Publisher: Portland Cement Association | pages: 56
Life cycle cost analysis (LCCA) is an economic procedure used to compare competing design alternates, over the lives of each alternate, considering all significant costs and benefits, expressed in equivalent dollars.
It is important to understand that LCCA is an economic tool that determines which alternate has the best value and not an engineering tool that determines how long an alternate will last or how well it will perform. This does not mean that engineering is not an important element of the life cycle cost analysis. Proper engineering must be used to ensure that each rival alternate meets the design criteria and provides similar results. If the alternates do not provide similar performance, then an economic assessment using LCCA to compare them is not realistic or reliable.
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Posted by: mybest - 05-05-2012, 10:19 AM - Forum: Concrete
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SP 041 Concrete Floor Systems Guide to Estimating and Economizing
Author: August W Domel, SK. Ghosh | Size: 1 MB | Format:PDF | Quality:Scanner | Publisher: Portland Cement Association | Year: 1990 | pages: 36
Preliminary estimates of material quantities (concrete, reinforcing steel, and formwork) for various span and loading conditions help with planning. The effects of different concrete strengths, column dimensions, and floor aspect ratios on material quantities are discussed to facilitate decision making. Charts containing relative cost indices help in making comparisons and selecting the most economical floor system.
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Author: USGS | Size: 14 MB | Format:PDF | Quality:Original preprint | Publisher: Committee on River Science at the U.S. Geological Survey, National Research Council | Year: 2007 | pages: 207 | ISBN: 0309103576 & 9780309103572
Book Description:
Rivers provide about 60 percent of the nation’s drinking water and irrigation water and 10 percent of the nation’s electric power needs. The multiple and sometimes incompatible services demanded of rivers often lead to policy and management conflicts that require the integration of science-based information. This report advises the U.S. Geological Survey on how it can best address river science challenges by effectively using its resources and coordinating its activities with other agencies. The report identifies the highest priority river science issues for the USGS, including environmental flows and river restoration, sediment transport and geomorphology, and groundwater surface-water interactions. It also recommends two cross-cutting science activities including surveying and mapping the nation’s river systems according to key physical and landscape features, and expanding work on predictive models, especially those that simulate interactions between physical-biological processes. The report identifies key variables to be monitored and data-managed. It proposes enhancements in streamflow, biological, and sediment monitoring; these include establishing multidisciplinary, integrated reach-scale monitoring sites and developing a comprehensive national sediment monitoring program. Finally, it encourages the USGS to be at the forefront of new technology application, including airborne lidar and embedded, networked, wireless sensors.
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This expanded third edition describes the design, construction, and repair of concrete floors on ground for residential, light industrial, commercial, warehouse, and heavy industrial buildings. The approach described emphasizes attaining the best possible balance among service requirements, costs, and maintenance. The text includes a discussion of floor flatness and levelness (Face Floor Profile Numbers and Surface Waviness Index), moisture testing and floor coverings, concrete durability, white concrete floors, and a glossary of slab-on-grade terms.
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This bulletin deals with methods of determining slab thicknesses adequate to carry traffic loads on concrete streets, roads, and highways. The design purpose is the same as for other engineered structures to find the minimum thickness that will result in the lowest annual cost as shown by both first cost and maintenance costs.
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Fundamental review of cementitious grouts and grouting practices. Discusses ingredients, properties, proportioning, mixing, testing, and placing of grouts for more than 25 applications. Grouting applications include masonry walls, grout clean-down, ceramic tile, toppings, underlayments, bonding and repair grout, flowable fill, post-tensioning ducts, column baseplates, machine bases, ground anchors, preplaced and post-placed aggregate concrete, stone masonry restoration, foundation jacking, rock and soil grouting, slurry trenches, railroad track stabilization, demolition grouting, oil well grouting, slabjacking, and subsealing.
Discusses grout consistency, workability and working time, bleeding, setting and hardening, strength, volume change, temperature rise, durability, and permeability and the tests used to measure these properties. Also covers specific equipment and methods for many of the applications described.
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Best-selling engineering manual includes comprehensive coverage of all aspects of concrete overlays on existing asphalt pavement. It includes information on the benefits, history, performance, design practices, and construction of all types of whitetopping. A special chapter discusses Ultra-Thin Whitetopping (UTW), including an interim procedure for determining the load-carrying capacity of UTW based on research and performance surveys.
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if any one had "solution manual" and "instructor manual" for "pavement design and materials" by papaginnakis & masad please share it.
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This edition of “Pakistan PWD Schedule of Rate for Building and Road Works – 2004” is in revision of the rates of its 1991 edition. In this edition some newly introduced items related to Civil Works have been added. Also brief specifications have been mentioned in the Schedule of Rate-2004 along with Sub-Heads. Metrication is another notable feature of this edition.The imperial units have still been retained, as the country has not yet been completed the change.
Best efforts have been made to make the Schedule of Rates comprehensive and complete. It is hoped that this document will meet the present day demand of the construction works and also will be helpful in execution of quality works.
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