Aggregates in Concrete (Modern Concrete Technology)
Author: M. G. Alexander, S. Mindess | Size: 4.85 MB | Format:PDF | Publisher: Spon Press | Year: 2005 | pages: 448 | ISBN: 0415258391
Bringing together in one volume the latest research and information, this book provides a detailed guide to the selection and use of aggregates in concrete. After an introduction defining the purpose and role of aggregates in concrete, the authors present an overview of aggregate sources and production techniques, followed by a detailed study of their physical, mechanical and chemical properties. This knowledge is then applied to the use of aggregates in both plastic and hardened concretes, and in the overall mix design. Special aggregates and their applications are discussed in detail, as are the current main specifications, standards and tests.
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Prescriptive Method For Residential Cold-Formed Steel Framing Year 2000 Edition
Author: Nader R. Elhajj, P.E. and Kevin Bielat | Size: 1.5 MB | Format:PDF | Publisher: NASFA | Year: 2000 | pages: 199
The year 2000 edition of the Prescriptive Method for Residential Cold-Formed Steel Framing (Prescriptive Method) was developed as a guideline for the construction of one- and two-family residential dwellings using coldformed steel framing. It provides a complete prescriptive approach to build typical homes with cold-formed steel framing. This document is based on standardized basic cold-formed steel members, provides labeling guidelines, and gives minimum corrosion protection recommendations. It also includes floor joist span tables, ceiling joist span tables, rafter span tables, wall stud tables, header span tables, wall bracing requirements, and connection requirements. The requirements are supplemented with construction details where required. The year 2000 edition includes improvements upon the second edition in the following areas:
- Enhanced wall bracing requirements for high wind and seismic conditions
- Floor joist tables for 19.2" spacing and tables for joists not requiring web stiffeners
- Header tables for bottom story of a two-story building with center load bearing beam
- L-Header tables and details
- Floor and wall anchoring details
- Added tables and details for non-load bearing walls
- Curtain wall tables
- Ceiling joist tables not requiring web stiffeners
- Expanded thermal, mechanical, electrical, and HVAC guidelines
- New section on “How to Use the Prescriptive Method”
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Attached is a seismic source parameters in pdf taken from EZ-FRISK regional seismic sources:
EUROPE AREA SEISMIC SOURCE DATABASE: Italy Area Source, Italian Area 901
EUROPE AREA SEISMIC SOURCE DATABASE: Italy Area Source, Italian Area 906
SOUTHEAST ASIA FAULT SEISMIC SOURCE DATABASE: Thailand Three Pagodas Fault
SOUTHEAST ASIA FAULT SEISMIC SOURCE DATABASE: Thailand Nam Pat Fault
as an example to give you an idea what are the parameters to input in creating user area/fault seismic sources.
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Paperback
Publisher: AISI (2003)
Language: English
ASIN: B001TOVSRU
for more information
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This 2010 edition of the IDAHO BRIDGE INSPECTION CODING GUIDE incorporates a few changes and corrections from our previous issues of the coding guide.
The Structure Inventory and Appraisal portion of this coding guide is based directly on the Federal Highway Administration’s RECORDING AND CODING GUIDE FOR THE STRUCTURE INVENTORY AND APPRAISAL OF THE NATION’S BRIDGES, December 1995. The AASHTO MANUAL FOR BRIDGE EVALUATION, 2008 addresses requirements for record-keeping, inspection material testing, load rating and posting of bridges. The BRIDGE INSPECTOR’S REFERENCE MANUAL (BIRM), DECEMBER 2006 discusses inspection procedures and analysis of a structure. Other reporting requirements and qualifications of personnel appear in the National Bridge Inspection Standards (23 CFR650.3). These publications are valuable supplements to this guide.
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This manual is designed to give practical engineering solutions to engineers who need to implement Water Sensitive Urban Design (WSUD) Guidelines. It is specifically aimed at the engineer who is given the task of implementing conceptual designs, referral agencies who assess these designs and local government who will be responsible for the maintenance of the systems. The manual includes a review of existing documents, design procedures for construction and maintenance, and checking tools, as well as worked examples and engineering plans for commonly used treatment elements including: Sediment basins
On-site retention (infiltration)
Swale/bioretention combinations
Bioretention basins
Buffer strips
Swale systems
Constructed wetlands
Ponds/lakes
Rainwater tanks (sizing for demand)
Sand filters
Aquifer storage and recover
y
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A method which employs microtremor has been introduced for estimating dynamic characteristics of surface
layers, in early 1950. Then usage of this method has received lots of criticism considering uncertainty about
source of microtremor. After an introduction of the Nakamura’s technique (H/V or QTS technique;
Nakamura, 1989), many people have paid a renewed great attention for estimating dynamic characteristics of
ground and structures using microtremor, since clear and reliable information was provided by very simple
and inexpensive noise measurements.
In recent years, although several researchers claimed that theoretical ground of this technique is not clear and
consensus based on experiment couldn’t be reached, there have been many successful experimental studies
based on these technique. Many theoretical studies have been performed, for explaining the amount of types
of waves included in microtremor and checking the applicability of the QTS technique. And some of them
are suggested that the peak on H/V ratio can be explained with the fundamental peak of Rayleigh waves.
From the output of these researches, explanation of microtremor with Rayleigh waves caused some confusion
between users and the author decided to clear out this problem.
The basic idea and the main goal of QTS technique are tried to be re-explained in present paper. The author’s
explanation about the effects of contents of Rayleigh waves in microtremor is also given. Other possible
usage of products from QTS technique (predominant frequency and amplification factor) for hazard
estimation is also given.
DIRECT LINKS
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