Size: 1.09 GB | Quality: 1280 x 720 | Format:MKV | Year:2010 | Video Codec: AC3 | Language: English
The Pearl River Tower is one of the first of a new generation of super smart buildings. It will use less than half the energy of a conventional skyscraper and will harvest the forces of nature to make energy of its own. With a curved facade that faces directly into the wind, the Pearl River Tower in China's Guangzhou City is shaped for performance. With a design specific to its environment, the Pearl River Tower utilizes a multitude of energy efficient technologies in one single structure, and symbolizes the future for super-tall building design.
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Size: 1.09 GB | Quality: 1280 x 720 | Format:MKV | Year:2008 | Video Codec: AC3 | Language: English
This case study describes what many industrial professionals said was impossible to design and build - it features the design evolution of the large scale wind turbines proposed for the Bahrain Trade Center. It gives a detailed description of the wind turbines and how they are controlled demonstrating how several innovative ideas came together were technically validated and produced the design for this unique building.
The Bahrain World Trade Center forms the focal point of a master plan to rejuvenate an existing hotel and shopping mall on a prestigious site overlooking the Arabian Gulf in the downtown central business district of Manama, Bahrain. The concept design of the Bahrain World Trade Center towers was inspired by the traditional Arabian "Wind Towers" in that the very shape of the buildings harness the unobstructed prevailing onshore breeze from the Gulf, providing a renewable source of energy for the project.
The two 50 storey sail shaped office towers taper to a height of 240m and support three 29m diameter horizontal-axis wind turbines. The towers are harmoniously integrated on top of a three story sculpted podium and basement which accommodate a new shopping center, restaurants, business centers and car parking. The full case study can be downloaded here via PDF - Harnessing Energy in Tall Buildings.
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Size: 350 MB | Quality: 352 x 480 | Format:AVI | Year:2004 | Video Codec: MPEG Layer-3 | Language: English
What began as a racing track, and thanks to Adolf Hitler’s World War II propaganda efforts, the track grew into a sophisticated high-speed road system, linking to almost all the major cities in Germany. The Autobahn boasts of having super thick road beds, 4% or less grades, wide lanes, and build on layers of technology. The Autobahn allows vehicles to travel at speeds exceeding 160km/h for roughly 2/3 of its roads. The episode profiles the operations of the highway cops, and their reliance on technology in training, monitoring of roads and various methods of arrest. It also looks at the ADAC, an automobile club, which provides on the spot road assistance. Nicknamed ‘The Yellow Angels’, they also provide air medical rescue. The system of maintenance of the Autobahn is also examined. All this infrastructure makes this mega structure into one of the world’s most safest super highway.
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Guide for Concrete Slabs that Receive Moisture-Sensitive Flooring Materials
Reported by ACI Committee 302
This guide contains materials, design, and construction recommendations
for concrete slabs-on-ground and suspended slabs that are to receive moisture-sensitive
flooring materials. These flooring materials include sheet
rubber, epoxy coatings, vinyl composition tile, sheet vinyl, carpet, athletic
flooring, laminates, and hardwood. Chapters 1 through 8 provide an
understanding of concrete moisture behavior and drying, and show how
recommended construction practices can contribute to successful performance
of floor covering materials. This background provides a basis for
the recommendations in Chapter 9 to improve performance of floor
covering materials in contact with concrete moisture and alkalinity.
Because this guide is specific to floor moisture problems and solutions,
refer to the most current editions of both ACI 302.1R, “Guide for Concrete
Floor and Slab Construction,” and ACI 360R, “Design of Slabs-onGround,”
for general information. These two documents contain guidance
on floor design and construction that is needed to achieve successful floor
covering performance.
Keywords: admixtures; cracking; curing; curling; drying; mixture proportioning;
moisture movement; moisture test; relative humidity; slab-onground;
specifications; vapor retarder/barrier.
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Size: 470 MB | Quality: 720 x 480 | Format:AVI | Year:2004 | Video Codec: MPEG Layer-3 | Language: English
In 1955, two ferries sank along the Akashi Strait, Japan, killing 168 children. It led to a 30 year research on designing a bridge that would link the Awaji Island to Kobe; the bridge would also have to be able to withstand severe earthquakes and typhoons, a norm in that area. In 1988, Japan began construction of the world's longest, highest and most expensive suspension bridge, the Akashi Kaikyo Bridge. The episode presents a stage by stage look at the construction of the suspension bridge, and the obstacles faced in its construction, including the Kobe earthquake in 1995.less
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Author: Hay, Thomas R | Size: 1.10 MB | Format:PDF | Quality:Original preprint | Publisher: Transportation Research Board | Year: 2008 | pages: 216
Inspection of steel bridge piles on a regular basis for the presence of defects is essential for the long-term safety of bridge infrastructure over water. Currently, these inspections are done visually and in the case of submerged piles, divers perform these inspections. Current pile inspections are performed by divers according to the National Bridge Inspection Standards and are dependent on inspector training, skill and experience. In many cases, significant sections of pile can not be visually inspected since they are submerged in environments that prevent visual inspection, such as swampy waters and river beds. Based on this feedback from railway bridge field engineers, there is a requirement for affordable pile inspection technology capable of providing feedback on pile wall loss. The ideal technology would be able to inspect submerged pile remotely from easy-to-access pile locations. The objective of this Innovations Deserving Exploratory Analysis (IDEA) project was to study the pile wall loss detection and characterization potential of long-range ultrasound (LRUT). Quantitative readings on remaining wall would be used to estimate pile remaining life and the load rating for the bridge. Laboratory studies were carried out to investigate the effectiveness of LRUT in detecting several types of manufactured defects in dry as well as H-piles submerged in water. In the laboratory tests, LRUT was able to detect manufactured defects, such as wall loss, through spliced and braced pile. Field testing was carried out on dry H-pile on a Norfolk Southern bridge in Mississippi and these data were used to develop Distance-Amplitude Correction (DAC) curves to quantify the wall loss (in ranges of 100%, 75%, 50%, and 25% wall loss). These ranges were established based on feedback from Norfolk Southern Railway and the performance limitations of the technology. Field testing on submerged H-pile was undertaken on a Norfolk Southern bridge in North Carolina. Of the eighteen LRUT measurements taken, slightly more than half fell within the established accuracy requirements, based on comparisons with actual measurements taken by divers.. Possible sources for the differences include the location at which the diver made the measurement, the severely-eroded pile surface above water, on which the electromagnetic acoustic transducer was mounted, inability of the current prototype to account for multiple inline wall losses, welded braces absorbing significant amounts of the ultrasound, and LRUT measurement error. As a direct result of this project, WavesinSolids LLC has developed the core technology to launch a commercial product and inspection service. Improvements in this core technology are underway to address the problems identified in the field tests.
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2009 Design of Reinforced Masonry Structures (6th)
Publisher: The Masonry Society; 6th edition (2009)
Language: English
ASIN: B007K3BA22
Amazon Link:
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PROCEDURES FOR EVALUATING CORROSION-INHIBITING ADMIXTURES FOR STRUCTURAL CONCRETE
Author: Thompson, N G Yunovich, M Lankard, D R | Size: 2.12 MB | Format:PDF | Quality:Original preprint | Publisher: National Cooperative Highway Research Program | Year: 2000 | pages: 216
The objectives of this research were to (1) develop procedures for evaluating and qualifying corrosion-inhibiting admixtures (CIAs) and (2) recommend performance criteria for their acceptance. Phase I work included a literature review of CIAs, the review of test procedures presently used for evaluating CIAs, and the development of a laboratory test plan for evaluating CIAs. In Phase II, the laboratory test plan was executed and performance criteria for qualifying an admixture as a CIA were developed.
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MANUALS FOR THE DESIGN OF BRIDGE FOUNDATIONS: SHALLOW FOUNDATIONS, DRIVEN PILES, RETAINING WALLS AND ABUTMENTS, DRILLED SHAFTS, ESTIMATING TOLERABLE MOVEMENTS, AND LOAD FACTOR DESIGN SPECIFICATIONS AND COMMENTARY
Author: Barker, R M Duncan, J M Rojiani, K B Ooi, PSK Tan, C K Kim, S G | Size: 20.68 MB | Format:PDF | Quality:Original preprint | Publisher: Transportation Research Board | Year: 1991 | pages: 228 | ISBN: 0-309-04866-4
This report documents and presents the results of a forty-two month study to develop load factor design procedures for highway bridge foundations. The findings of the study are presented in a new draft AASHTO Design Code and Commentary for foundations and retaining walls, and in five engineering manuals, and a separate report on code calibration. The engineering manuals address (1) design of driven pile foundations, (2) design of drilled shaft foundations, (3) design of shallow footing foundations, (4) design of retaining walls and abutments, and (5) estimation of tolerable settlements of structures. The manuals present state-of-the-art design methods, and illustrate their use through examples. This study shows that the foundations of bridges and other structures can be designed effectively using load factor design procedures, and it establishes procedures for load factor design of foundations.
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Spread footings are most often less expensive than deep foundations. In an effort to improve the reliability of spread footings, this research project was undertaken. The results consist of: (1) a user friendly microcomputer data base of spread footings, case histories and load tests; (2) the performance of five large scale square footings in sand; (3) an evaluation of the current accuracy of settlement and bearing capacity prediction methods; (4) observations on the scale effect, the zone of influence, the creep settlement, and soil heterogeneity; (5) a new and simple method to predict the complete load settlement curve for a footing as well as several correlations; and (6) evaluation of the WAK test, a dynamic test for spread footings.
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