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Titre : Érosion
Climat : méditerranéen aride
Description :
Érosion en nappe se transformant en érosion en rigoles.
L'érosion est déclenchée par la formation à la surface du sol d'une croûte de battance (voir photo Ruellan-0281). Cette croûte est ici bien visible sur la première photo.
Le sol est limoneux, calcaire, pauvre en matière organique : la stabilité structurale est faible.
'Regards sur le sol' p.123
Auteur :Alain Ruellan
Structurally tilted & folded sedimentary rocks in the Cambrian of Tennessee, USA.
The deformed rocks shown here are part of the Rome Formation (Middle Cambrian). Folds (and faults) are common in mountain belts formed by tectonic collision - this example is in the Appalachian Mountains, which formed by collision between Africa and North America during the Pennsylvanian. This ancient mountain-building event is called the Allegheny Orogeny. The supercontinent Pangaea formed at this time.
Locality: roadcut along the eastern side of Rt. 25E, immediately south of the Copper Creek Thrust Fault (= same outcrop), just south of the Clinch River, north of Clinch Mountain, far-northern Grainger County, northeastern Tennessee, USA (36° 22' 54.64" North latitude, 83° 26' 48.86" West longitude)
Dortechs glass and steel bolt assembly system can be suspended or stacked. It can be fixed back to structural steelwork, Glass fins, tension trusses & cable nets.
The product is ideal for Facades, Glass Bridges, Internal Partitions, Shopfronts, Balustrading, Glass Canopies & Roofs.
The final product has a Completely Flush external appearance, Clean lines with no intersecting mullions or transoms.
The system Maximises light transmission and has a range of mechanical fixings to suit aesthetic objectives.
Monolithic (Single Glazed) or IGU (double glazed)options are available.
For further information, please contact us using the details below:
Website: www.dortech.co.uk
Email: company@dortech.co.uk
Tel: 0044 (0) 1484 451177
Fax 0044 (0) 1484 456474
It takes a really big beam clamp (or two of them, actually) to lift this 50,000 pound beam into the air to move it off the truck. Here two of our ironworkers carefully guide the clamp into the proper location.
Cracking, horizontal and vertical displacement of the brickwork for the outer platform shelter structures at Armadale station. The station is of one of four similarly designed ones between Caulfield and South Yarra built as part of a large scale project to lower the rail lines to remove numerous level crossings and expand the section of line from two to four tracks.
The stations at Malvern, Armadale, Toorak and Hawksburn were built to a common design by James W Hardy and were completed in 1914 with the quadruplication work coming into service in October 1915. The stations consist of a central island platform with outer side platforms all linked by a pair of enclosed footbridges. A similarly designed example is located at Camberwell on the Lilydale/Belgrave lines.
In recent years the shelters on the outer platforms have had cracking in the brickwork and significant horizontal movement, particularly near the arch structures over the platform entrances - which themselves have all been supported by a steel insert pinned at multiple locations into the brickwork. In many cases there have been survey markers placed to monitor the progression of movement.
In addition an elevated shop built at the top of the station platform facing Cheel Street also has major problems with differential settlement and has been held together with an enclosed steel frame at the top parapet of the structure with the three brick columns at the rear on the platform supported by steel props with temporary fencing around the platform side. The Armadale Village Deli which traded from the site was forced to 'temporarily' move owing to the unsafe condition of the structure.
Dortechs Structural Silicone Glazed Curtain Wall systems can be used to create almost perfectly flush-fitted glass facades. The appearance of structural glazing is achieved by using profiles that are only visible on the room side. From the outside, only the glazing and the slender shadow joints are visible. The gap between each piece of glass is approximately 25mm (this can vary) in comparison to the 50 – 60mm site line prevalent with traditional, visible grid curtain wall systems.There are two main types of SSG system Dortech offers;
The first is based upon specialist double glazed units which are manufactured to include an SSG spacer bar which incorporates a ‘U’ channel. Typically the spacer bar will have a bronze anodised finish. Structural silicone is used to bond each piece of glass to the spacerbar. Once the curtain wall grid has been erected on site, these specialist glass units are delivered to site and locked into the grid using metal toggles which are designed specifically for each respective aluminium suppliers curtain wall system. Finally a compatible silicone is applied over the top of the vertical and horizontal joints to create a flush finish.
The second utilises traditional double glazed units manufactured with structural silicone. Aluminium carrier frames are then bonded around the perimeter of each piece of glass with structural silicone. On site, the perimeter frame is locked into the curtain wall grid and then silicone is applied over the gap between each piece of glass.
Please note, the SSG Curtain wall sysems cannot accomodate significant structural movements.
Dortech has carried out a number of projects utilising the following SSG Curtain wall systems:
Schuco FW50+SG
Schuco FW60+SG
Technal MX+SG
For further information, please contact us using the details below:
Website: www.dortech.co.uk
Email: company@dortech.co.uk
Tel: 0044 (0) 1484 451177
Fax 0044 (0) 1484 456474
Claremont House is a large, stone built former dwelling and outbuildings, standing in grounds of approximately 1.4 hectares off Storrs Bridge Lane. The building was last used as a social club for employees of the nearby Hepworths Refractories, but has been vacant for many years. It was built in 1895. Some of the outbuildings are in a derelict condition. The grounds, including a former car park and tennis court, have become overgrown and a substantial number of self-set trees and shrubs have colonised the site. The site has reverted to a semi-natural state, although some minor fly tipping has occurred.
It is the most unsafe building I have been in.
This is a spread I did about my "issues" with a project of mine--the book I am supposed to be working on that was put on hold.
Structural Integrity
Transforming the Arts House Meat Market complex, Structural Integrity is a monumental and melancholic, World’s Fair-styled exhibition and residency project. Exploring independent arts cultures from across Australia and Asia, Structural Integrity includes the work of six Australian and five Asian Artist Run Initiatives (ARIs). The exhibition will be open every day of the Festival, and is Next Wave’s biggest and most ambitious engagement with the Asia-Pacific region in the Festival’s 25-year history. Working on-site at the Meat Market in the month leading up to the Festival, each artist group will create a large-scale structure, or ‘pavilion’, inside this vast historical building. Taking wildly different forms, from faux architectural constructions, to new media laboratories, sound installations, public workshops, and many variations in between, the eleven pavilions will form a snapshot of emerging arts practice in today’s rapidly changing artistic and geo-cultural landscape. Some of the pavilions will house additional artworks, whilst others will simply exist as the artwork itself. Many invite public interaction, welcoming audiences into the lively and chaotic world that each structure represents. The pavilion structure has long been loaded with cultural values and ideals: think of the grand expositions of the 19th Century, or of the Venice Biennale. With this in mind, each pavilion in Structural Integrity will be developed as an expression of the participating ARIs’ artistic principles, in relation to their particular cultural or geographic situation. Playfully questioning the values and ideals that motivated many of these grand international fairs and expositions, Structural Integrity examines national and local cultural identity through the lens of innovative contemporary arts practice, taking in the shared, as well as distinctive, characteristics of grass-roots artistic culture across the region. As both metaphoric and physical structures, the pavilions will be in turns playful, provocative, melancholic, speculative and rhetorical.
Supporters: Arts Victoria, City of Melbourne, Arts House, Australia Council for the Arts, Sidney Myer Fund, Australian Indonesia Institute, Australia Japan Foundation, Asialink, Harold Mitchell Foundation Artist/s: Art Center Ongoing, Tokyo, Japan Boxcopy, Brisbane, Australia FELTspace, Adelaide, Australia House of Natural Fiber, Yogyakarta, Indonesia Locksmith Project Space, Sydney, Australia Post-Museum, Singapore Six_a Artist Run Initiative, Hobart, Australia Tutok, Manila, Philippines Vitamin Creative Space, Guangzhou, China, West Space, Melbourne, Australia, Y3K, Melbourne.
Structural Integrity
A 2010 Next Wave Festival Keynote Project
Continuing until 30th May 2010
The Institution of Structural Engineer's Young Structural Engineering Professional Award - Winner Kayin Dawoodi. © Arup
Once the truck is parked in the correct position, the crane lowers the beam spreader with the beam clamps. The location on the girder where it is lifted has been carefully calculated and is measured in the field.
040206-F-1740G-003, Yokota Air Base, Japan (AFPN)- Airman First Class Ashley Maddox, a member of the 374th Maintenance Group/ aircraft structure element, Yokota Air Base, Japan, visually inspect a C-130 aircraft engine after it was painted here. The engines are periodically sanded, primed and painted by members of the structural element flight to prevent corrosion. (Photo by: MSgt Val Gempis)
Pigeon Spring Stamp MIll
Pigeon Spring, Nevada
1890-1907
This area once had a saloon, store, and roadhouse. A post office application was submitted in 1899, but did not open.
This is a part of California/Nevada 2012 Photo Trip.
A pair of massive truss supports are the focus of millions of tons of force from the steel and glass roof of the Denver International Airport.
Duct tape on cardboard: not so good, actually! December 2006. Read more at: eikimartinson.com/engineering/fume0/
Cracking here along with the other significant cracks all around this structure indicate movement of the foundation.
Look familiar? Contact Peak Structural at 303 243 3028 or www.peakstructural.com/
With three workers carefully controlling any excess movement, the girder is lifted into the clear space nearby.
The temple of the goddess Isis at Philae is one of the most beautiful in Egypt, not as large as some but structurally largely complete, which is fitting for the temple believed to be the last to operate under the ancient Egyptian religion, having only formally closed for pagan worship in the 6th century AD.
It was also the first of Egypt's great temples I ever saw in person and left me spellbound, and thus it was fitting that this should again be the first we visited on this trip.
The temple sits in a uniquely picturesque setting on a small island in the Nile south of Aswan and thus has only ever been approached boat. The complex consists of the main temple building dedicated to Isis (wife of Osiris and mother of Horus) whose inner sanctum is entered via a forecourt with towering pylons guarding the inner and outer entrances. All this is approached from the Nile through an open court flanked by lengthy colonnades making an unforgettable first impression.
There are several subsidary buildings of note around the site, the most imposing of which is undoubtedly the large rectangular colonnaded structure known as 'Trajan's Kiosk', which features some beautifully carved capitals.
The temple is relatively new by Egyptian standards, begun under one of the last of the native pharoahs, Nectanebo I (c380-62 BC) but mostly dating to the Ptolemaic period (as do many of the better preserved temples in the south of the country).
The temple's long use and later conversion to a church along with its remote location helped preserve it more or less completely over the centuries, but in the 20th century it faced its biggest threat, the construction of the Aswan dams which are located either side and caused Philae island to flood. The first dam (built 1902) caused the temple to be inundated for much of the year (thus washing away all the remaining paintwork from the interior; 19th century watercolours record what a loss the coloured details were). The bigger threat came in the 1960s when the Aswan High Dam was built to the south, causing the water levels to rise enough to completely submerge most of the temple. For some years all that could be seen of Philae were the four main towers and the columns of Trajan's Kiosk emerging from the waters.
Fortunately salvation came in the 1970s following the campaign to rescue and relocate the Nubian temples further south also threatened by the rising waters. Following the construction of a coffer-dam around the temple the entire temple complex was dismantled and rebuilt on higher ground on the adjoining island of Agilkia where it can be enjoyed in its full splendour today.
For more on this wonderful site see below:-