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Engineering Acoustics

Posted by: ir_71 - 12-23-2010, 06:30 AM - Forum: General Books - No Replies

Engineering Acoustics, An Introduction to Noise Control

"Engineering Acoustics" is a teaching textbook that can serve as a tool for self-study and as a compendium for lectures as well. One of the author's goals is not only to describe how the topic develops but also why a specific way is chosen. The explanations do not restrict themselves to mathematical formulas. Only the illustrative explanation relying on the reader's imagination creates comprehension. This book represents the foundations of what nowadays seems necessary to make our environment quieter - in buildings as well as in the open air. Fundamental chapters on the physics and perception of sound precede those on noise reduction methods. A chapter dealing with microphines, loudspeakers, and acoustical antennae is included as well as a chapter on the fundamentals of signal and system theory. Practice exercises with solutions serve for the application of the entire content.

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A lot of Engineering Spreadsheets

Posted by: Vufor - 12-23-2010, 06:24 AM - Forum: Engineering Spreadsheet - Replies (11)

Through given links you can download a collection of very useful spreadsheets

- Table of Content

-STEEL DESIGN
-FOUNDATION DESIGN
-CONCRETE DESIGN
-TIMBER DESIGN
-ALUMINIUM DESIGN
-MASONRY DESIGN
-BRIDGE DESIGN
-LATERAL DESIGN

If you would be interested in just one of the spreadsheets from any of these subgroups, you can visit my post below to get the link to the original resource, from where all these spreadsheets were downloaded

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Steel Design

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Foundation Design

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- ADDITION:

Concrete Design

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Timber Design

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Aluminium Design

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Masonry Design

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Bridge Design

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Lateral Analysis

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That is it, all the collection
Vufor

-------------------------------------------------------------------------------
Terms of use: By own risk and discretion as for any other piece of soft.

Ancient Water Technologies

Posted by: ir_71 - 12-23-2010, 06:12 AM - Forum: Water & Hydraulic Engineering - Replies (1)

Ancient Water Technologies

There is no more fundamental resource than water. The basis of all life, water is fast becoming a key issue in today’s world, as well as a source of conflict. This fascinating book, which sets out many of the ingenious methods by which ancient societies gathered, transported and stored water, is a timely publication as overextraction and profligacy threaten the existence of aquifers and watercourses that have supplied our needs for millennia.

It provides an overview of the water technologies developed by a number of ancient civilizations, from those of Mesopotamia and the Indus valley to later societies such as the Mycenaeans, Minoans, Persians, and the ancient Egyptians. Of course, no book on ancient water technologies would be complete without discussing the engineering feats of the Romans and Greeks, yet as well as covering these key civilizations, it also examines how ancient American societies from the Hohokams to the Mayans and Incas husbanded their water supplies. This unusually wide-ranging text could offer today’s parched world some solutions to the impending crisis in our water supply.

Content Level » Research

Keywords » ancient civilizations - ancient water systems - water history - water sustainability - water technology

TABLE OF CONTENTS
1. A Brief History of Water Technology during Antiquity: Before the Romans

Larry W. Mays

2. Water Technology in Ancient Mesopotamia

Aldo Tamburrino

3.Water Technology in Ancient Egypt

Larry W. Mays

4. Ancient Greek Lavatories: Operation with Reused Water

Georgios P. Antoniou

5. Water Resource Management in Iran’s Ancient Persepolis Complex

Mahdi Moradi- Jalal, Siamak Arianfar, Bryan Karney and Andrew Colombo

6. A Web Based Information System for the Inspection of the Hydraulic Works in Ancient Greece

Nikos Mamassis and Demetris Koutsoyiannis

7. A Brief History of Roman Water Technology

Larry W. Mays

8. Analysis of the water system of the Roman city of Apamea

Benoît Haut and Didier Viviers

9. Water Technology in the Ancient American Societies

Larry W. Mays and Yuri Gorokhovich

10. Groundwater Resources and Earthquake Hazards: Ancient and Modern Perspectives

Yuri Gorokhovich, and Lee Ullman

11. Lessons from the Ancients on Water Resources Sustainability

Larry W. Mays

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Design of Circular Base Plate

Posted by: rohailiyaz - 12-23-2010, 06:10 AM - Forum: Archive - Replies (3)

Any one has this article.......

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Design of Circular Base Plates

by Dajin Liu, (Sr. Struct. Engr., Parsons, 10 South Riverside Plaza, Ste. 400, Chicago, IL 60606)

Practice Periodical on Structural Design and Construction, Vol. 11, No. 1, February 2006, pp. 1-13, (doi10.1061/(ASCE)1084-0680(2006)11:1(1))

Document type: Journal Paper

Abstract:

Circular base plates are commonly used for pipe columns, such as pylons in cable-stayed bridges, lighting poles, and electric power line posts. Although the explicit solutions for rectangular base plates can be found in many textbooks and AISC design procedures for base plates, a complete design procedure for circular base plates under different loading conditions has not been documented except for a large eccentric load. In this paper, a complete allowable stress design procedure is presented for circular base plates with axial loads, small eccentric loads, and moderate eccentric loads. Several design examples are shown for different loading conditions.

Moderator Note

Please try to put some detail for your request
providing just the link is not much appreciated

2nd Year of CivilEA.com Birthday

Posted by: Administrator - 12-23-2010, 05:31 AM - Forum: CivilEA News - Replies (74)

Hi

24th-Dec-2008 CivilEA.com forum was born, however before this date we are with you by 4downloader.ir site (approximately 2-years).

I hope that the site is useful for you, We all try and have the scientific and environmental benefit, we provide you And save this important effort and cooperation of all managers of boarding is not possible users.

Second Year of Birth largest civil engineering reference to congratulate all of you.

Concrete: Design of Concrete Mixtures, Batch Mix Design

Posted by: henrybill - 12-23-2010, 04:37 AM - Forum: Engineering Spreadsheet - Replies (4)

Concrete Design & Batch v1.2 (for MS Excel)
- Design of Concrete Mixtures -

Size: 881.94 KB

Comprehensive Excel spreadsheet for concrete mix design and batching. Can save up to 100 mixes. Unique easy to use features for proportioning aggregates etc. Up to six aggregates, four cements and five admix can be blended in any one mix. Sieve analysis can be entered for up to twelve course and fine aggregates. Combined grading is graphed as you design a mix. Aggregate moisture can be adjusted and batch weights produced."

CONDEZ12.XLS - At last a simple to use, fully integrated mix design and batch program with built-in features not found in any other software. The spreadsheet is fully operational and will work approximately 30 times before some features become unuseable (demo mode).

Mix Design: User friendly interface means the program can be used as a tool to produce a simple concrete mix or by using the advanced features enables the user to produce accurate complex mixes using multiple cements, admixtures and aggregates.
The program makes it simple to adjust mixes. If for example extra water , cement or any ingredient is adjusted, simply adjust the yield control back to the required amount ie.1000 (1 cu m) and the aggregates are adjusted automatically. Again if for example more fine aggregate is required, one control will adjust all the course aggregates and all the fine aggregate volumes and weights automatically.

Autor: John Hoggard, New Zealand
Manufactured by: XP Software Ltd.
Supported Operating Systems: Windows all
System Requirements: Microsoft Excel 97/2000/2003 and later
Install Support: No Install Support
- Open Excel (Macros to activate security mode "media ") and go to the directory that contains the condez12 file. Open the file.
- Will not run with other Excel Workbooks open.
- This unregistered version saves only one mix.
- The program runs best with a Pentium computer with at least 32 meg ram. It will run with only 16 but will be slow. It is preferable to run the program without any other Excel workbooks open at the same time.
- If an error message appears regarding circular references select Tools – Options and then select the Calculation tab and tick Iteration.

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Who is the Invisible User(s)

Posted by: ravisbassi - 12-22-2010, 07:31 PM - Forum: FAQs, Q&A, comments - Replies (4)

	While searching, I observed that an Invisible User appears. The other people in the copied " " below are incidental, and I can go to their profile. But not the Invisible User(s). It is blanked out. I really find this upsetting. This must be addressed. Do we have a Big Brother watching??? "avscorreia, peixoto, ravisbassi, shpatone, 1 Invisible User(s)"

ASTM STP599 - Soil Specimen Preparation for Laboratory Testing

Posted by: hich - 12-22-2010, 07:26 PM - Forum: Foundation & Geotechnics in general - Replies (2)

STP599 - Soil Specimen Preparation for Laboratory Testing

Soil Specimen Preparation for Laboratory Testing

A very interesting book showing the effects of poor field sampling and preparation on final laboratory results. A must for civil engineers and soil scientists

Table of Contents

Overview PDF

Introduction - Sangrey D., Mitchell R.
Effect of Water Saturation History on the Strength of Low-Porosity Rocks - Ballivy G., Ladanyi B., Gill D.
Four Factors Influencing Observed Rock Properties - Chamberlain P., Van Eeckhout E., Podnieks E.
Trimming Device for Obtaining Direct Shear Specimens from Samples of Stiff Fissured Clay Shale - Durham G.
Effects of Specimen Type on the Residual Strength of Clays and Clay Shales - Townsend F., Gilbert P.
Effects of Storage and Extrusion on Sample Properties - Arman A., McManis K.
Transportation, Preparation, and Storage of Frozen Soil Samples for Laboratory Testing - Baker T.
Temperature-Controlled Humid Storage Room - Bozozuk M.
Effect of Storage and Reconsolidation on the Properties of Champlain Clays - La Rochelle P., Sarrailh J., Roy M., Tavenas F.
Pore Water Extraction and the Effect of Sample Storage on the Pore Water Chemistry of Leda Clay - Torrance J.
Variation in Atterberg Limits of Soils Due to Hydration History and Specimen Preparation - Sangrey D., Noonan D., Webb G.
Effect of Specimen Preparation Method on Grain Arrangement and Compressibility in Sand - Mahmood A., Mitchell J., Lindblom U.
A Technique for the Preparation of Specimens of Loose Layered Silts - Nacci V., D'Andrea R.
Shrinkage of Soil Specimens During Preparation for Porosimetry Tests - Zimmie T., Almaleh L.
Compaction and Preparation of Soil Specimens for Oedometer Testing - Booth A.
Laboratory Preparation of Specimens for Simulating Field Moisture Conditions of Partially Saturated Soils - Chu T., Chen S.
Scalping and Replacement Effects on the Compaction Characteristics of Earth-Rock Mixtures - Donaghe R., Townsend F.
Study of Irregular Compaction Curves - Lee P.
Importance of Specimen Preparation in Microscopy - Gillott J.
Use of Ultrasonic Energy for Disaggregation of Soil Samples - Johnson A., Mostoh R.
Soil Drying by Microwave Oven - Lade P., Nejadi-Babadai H.

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Guidelines for instrumentation and measurements for monitoring dam performance

Posted by: gato8015 - 12-22-2010, 07:13 PM - Forum: Archive - No Replies

:JC_handshake: Guidelines for instrumentation and measurements for monitoring dam performance
Authors: ASCE Task Committee on Guidelines for Instrumentation and Measurements for Monitoring Dam Performance
Publisher: Amer Society of Civil Engineers
Published Date: 2000-09
ISBN-10: 078440531X
ISBN-13: 9780784405314

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Please, avoid titles like: "I need this book" - The forum search engine have reduced efficiency when the post have incorrect title or orthographic errors (including no space after comma).
Hope you understand!

regards

Dell Brett

Environmental Engineer's Mathematics Handbook - by Frank R Spellman

Posted by: ska51 - 12-22-2010, 06:45 PM - Forum: Environmental Engineering - Replies (2)

Environmental Engineer's Mathematics Handbook

Environmental Engineer's Mathematics Handbook
Author(s): Frank R. Spellman
Publisher: CRC Press Date: 2004 Format: PDF Language: English
ISBN10: 1566706815 Pages: 642 Size on disk: 16.5 MB

More Info:
Advanced mathematics used in engineering is studied here in this text which examines the relationship between the principles in natural processes and those employed in engineered processes. The text covers principles, practices and the mathematics involved in the design and operation of environmental engineering works. It also presents engineering modelling tools and environmental algorithm examples. Major subjects covered in this book include:
* modelling
* algorithms
* air and water pollution assessment and control calculations
Providing concepts, definitions, descriptions, and derivations in an intuitive manner, it is both a textbook and reference tool for practitioners involved in the protection of air, water, and land resources.

[Image: Download.png]

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