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Barn Roofing

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How to Install Metal Roofing

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Barn available above

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Tin Roof

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Burj Dubai Design

Not only is it tall, the design of the Burj Dubai is groundbreaking in many other ways. 64 floors of apartments makes it the first worlds tallest tower to offer residential space in centuries.

For the head architect, Adrian Smith at Skidmore, Owings and Merrill, challenging designs is nothing new. He’s been behind the Jin Mao in Shanghai, the United Gulf Bank building in Bahrain and most recently the the Trump International Hotel and Tower.

Trump in Chicago, 415 m (1362 ft).
Photo courtesy to: Skidmore Owings and Merrill LLP

For the Burj Dubai design Adrian Smith and SOM decided to use the bundled tube design, the same design SOM choosed for the Sears Tower and revolutionized the construction industry in the early 70s. Lead architect at that time were the famous Bruce Graham also from the Chicago office as Adrian Smith.

Bundled tubular design illustrated with a model of Sears tower, Chicago, also once
the tallest building in the world and built on the same principles as the Burj Dubai.
Picture Courtesy to Katoholieke Universiteit Leuven

The major advantage of using a bundled tubular as you might be able to tell from the picture are limiting the influence of shear lag. Shear lag is particularly an issue in skyscraper designs such as the Burj Dubai’s with it’s large side dimensions and what the Bundled tubular model do is simply making it possible. The Y shaped floor plan, inspired by the flower of Hymenocallis takes advantage of the bundled tube design of Burj Dubai and creates a variety of different spaces inside the building, all with a great view.

The Y-shaped floor plan.
Picture Courtesy to Emaar Properties PJSC.

Allied Bank Plaza, Houston.
Another example of bundled tube design.
Photo Courtesy to: Houston Architectural Info.

As for the Allied bank Plaza which shapes a dollar sign when viewed on from up abowe the lobes of the Burj Dubai design hide the shapes of a mosques onion domes, something which can be seen from certain angles close to the base if you look up the building.

In recent years Smith has become commited to energy efficient designs, for the approved Pearl River Tower project in Guangzhou, China, he worked together with former SOM architect Gordon Gill and together took sustainable designs to another level.

This was clearly shown on the Burj Dubai design as well, thermally insulated and with no horizontal surfaces to prevent dust to settle and keeping the energy efficient cladding clean are both major measures pointing in the same directions.

Looking at interior design the lobby will consist of two floors and as for the hotel and 160 of the apartments in the building the Giorgio Armani S.p.A. and EMAAR Hotels & Resorts LLC closed a deal in late 2004 to create the first Armani labled hotel in the Burj Dubai.

The Armani hotel will have a spa and five restaurants and the interior design of the apartments are Armani themselves responsible for. In total the complex will cover 40 000 m² of the floor space(in total 314,000 m²). Wa international, a Dubai based design company has been consulted on other part of the projects.

As for Adrian Smith, our beloved architect behind this project he and SOM decided to walk separate ways. Having said to be responsible for 70 to 80 percent of the Chicago office profit he left SOM october 2006 are now right in the middle of setting up his own practice with Gordon Gill, Adrian Smith + Gordon Gill Architecture. Turning 63 next year I still hope we have many groundbreaking designs to look forward to and recalling what Smith said himself recently: “I’m not planning to cut down before my 70:s birthday” I’d say chances are pretty good.

The tallest building in the world

Not even halfway through construction the Burj Dubai is already the 5 th tallest building in Dubai but staying it is another project. (As of 11/10/2006.)

Tallest title put in a perspective.
Which titles could the Burj Dubai really claim?
Approved or Proposed new Tallests.

Tallest Title Put in a Perspective.

A spokesman for the developer, Emaar, said in a interview “I don’t think Burj Dubai tower could claim the title in 10-15 years, it would surprise me.” Me to. The Empire State Building managed to keep it’s title in 42 years, quite an accomplishment and that also an record in it’s class. In recent year the competition has been closing in even more, the Petronas tower only managed to keep the tallest building in the world title for six years and the current holder Taipei 101 for less then five if Burj Dubais construction progress as expected.

Taipei 101, Current worlds tallest tower
with a rooftop height of 1470 ft (448 m),
most likely 200 m(670 ft)shorter then challenging Burj Dubai.

Although the final height of the Burj Dubai tower is keept a secret the aim is very clear, the tallest building in the world all categories. At least for a short period of time. This would guarantee a height of at least 630 m (2,067 ft) to beat Taipei 101, the CN tower in Toronto and the Fargo mast in North Dakota and most certinly will it be much taller then that.

CN tower, Toronto 553 m (1815 ft).

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Which titles could the Burj Dubai really claim?

The Council on Tall Buildings and Urban Habitat’s, one of the most respected sources when it comes to categorization define the following four measurements for the tallest building in the world(note buildings).

To Structural Top: Height to structural top of the building.
To Highest Occupied Floor: Height to the floor of the highest occupied floor of the tower.
To Top of Roof: Height to the top of the roof.
To Tip of Spire/Antenna: Height to the tip of spire, pinnacle, antenna, mast, or flag pole.”

The Burj Dubai will have all the abow titles but with it’s great height it will also claim the “tallest freestanding structure on land” and the “world’s tallest supported structure on land”, traditionally out of any buildings league and there has already been argued if the Burj actually could claim it no matter it’s height.

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Approved or Proposed new Tallests.

At any given time there is always dussens of projects aspiring on the worlds tallest tower title. A majority of them never raise abow the ground but remember, Burj Dubai was once also only a visionary tower which only a few really expected to get built. At the moment challengers to the title are almost exclusively visionary projects, no approved or proposed ones. However I have sorted out a few projects which seem more likely to get built then others but in the footsteps of Burj Dubai I’d also say it’s most likely I´ll have to update this list again very soon.
Tallest Tower list*
Building and location: Height:
Bionic Tower, Shanghai or HK. 1128 m(3,701 ft)
Sky City 1000, Tokyo. 1000 m(3,281 ft)
Enviro Mission Solar Tower, NSW, Australia. 1000 m(3,280 ft)
Millenium Tower, Tokyo. 840 m(2755 ft)
Al Burj, Dubai. Above 700 m(2296 ft)

*All types of structures and statuses listed.

The Solar Tower is an interesting challenger to Burj Dubai, it’s one of the two projects on the list that’s actually not only a vision, it’s proposed. what looks like a gigantic chimney make use of the wind to run a generator and also reflects the sun on thousands solar panels surrounding it on the ground. If beeing built this project could however only claim “the tallest free standing structure on land” -title, a title Burj Dubai most likely won’t be able to claim anyway but it’s still quite a spectacular project don’t you think?

Proposed Solar Tower in Buronga NSW, Australia.

Al Nakheel, the developer behind the other proposed building on the list, the Al Burj, has clearly stated it will rival the Burj Dubai tower when it’s expected to open in 2010.

Al Burj tower, Dubai Waterfront, Dubai.
Picture courtesy to Al Nakheel.

The next contender however are most likely to come from Asia or the middle-east but there’s projects in the west to of course, Fordham Spire in Chicago and Russia Tower in Moscow for example but with it’s current designs none of them are to rival the Burj Dubai. With the sudden changes the world experiences today almost nothing is for certain though and in a weeks time the situation might be a lat different so make sure to come back 🙂

Developer Emaar’s Burj Dubai Development

Developer Emaar’s Burj Dubai Development To Drive Company’s Participation At MIPIM 2005

Dubai, March 6, 2005: Emaar’s prestigious Burj Dubai Development and Dubai Marina will be among the several lifestyle properties offered to investors and homeowners at the 2005 MIPIM exhibition which will take place in Cannes, France, later this month.

The exhibition –now in its 16th year—runs from March 8 to 11 at Palais des Festivals and attracts the leading real estate developers from Europe, North America and Asia.

Emaar is making its second consecutive presence at the annual global property forum. The company, globally acknowledged as one of the world’s finest, will be led by a high-level delegation.

Robert Booth, Executive Director, Emaar: “The Burj Dubai development has become more than a wonderful property that houses the Burj Dubai and The Dubai Mall. It has become a signpost for everything that the city of Dubai stands for. The world has already acknowledged Dubai’s role in the Middle East as a prime mover of business, finance, leisure and lifestyle enterprises. Emaar’s appearance in Cannes with iconic properties like the Burj Dubai development and Dubai Marina will further raise Dubai’s stature as the Middle East’s city of the future.”

Visitors to the Emaar pavilion will get an opportunity to view the sheer size and magnitude of the five million square feet urban development featuring Burj Dubai, the world’s tallest residential tower, The Dubai Mall, the world’s largest entertainment and shopping mall, The Boulevard, The Old Town, man-made lakes and landscaped parks.

“With the Burj Dubai Development, we are creating a new architectural landmark for global property developers. In its daring vision and planning, the landmark project reflects the dynamic growth of Dubai’s real estate sector making it the favoured place to live, work and invest,” said Booth.

Reflecting the diversity of Emaar’s lifestyle offer will be the Dubai Marina, the company’s unique waterfront development regarded to be the French Riviera of the Middle East. The internationally acclaimed project comprises residential towers and luxurious villas that have been created around a 3.5km water channel. It is the region’s first ‘intelligent city’ that will eventually house 40,000 people in stunning surroundings that boast international restaurants, coffee shops and boutique-style retail shops.

“With its ever-expanding range of property developments, Emaar has altered the architectural landscape of Dubai. This exhibition provides us with a good opportunity to illustrate Dubai’s success as a lifestyle destination as well as connect with the key players in the real estate industry,” said Booth.

Emaar’s participation at MIPIM marks the end of a successful year for the property developer as it grew from strength to strength in size, value and product offerings. The company recently announced record annual
profits of AED 1.691 billion for the year ended December 31, 2004 corresponding to a net profit increase of AED 1.015 billion or 150 percent. This year alone, Emaar handed over more than 8,000 homes to its owners and launched nearly 40 developments, unprecedented for any developer anywhere in the world.

Courtesy to Burj Dubai developer Emaar Properties PJSC

Cement and inert aggregate silo

Our company produces cement and inert aggregate silos.

 

height of the frame
(without supporting frame)
up to 15 m
Silo diameter up to 3,5 m
Operating volume of one silo up to 80 m3

1. silo frame
2. supporting structure design
3. disk valve, rotary
4. pneumo-breaking-down circuit or vibrator
5. loading pipe

1. aspiration system
2. dancers with walk-site protection
3. top walk-site protection
4. levels sensors
5. automation unit for pneumo-breaking-down circuit
6. union flanges for screws (accordingly to customer’s Technical Specification)
7. horizontal, inclined, composite screws (accordingly to customer’s Technical Specification)

Q, т (cement) 20 30 40 50 60
D, mm 2400 2400 2400 2400 2400
H, mm 6600 8475 10350 11550 13475
H1, mm 8000 9700 11900 13000 15000
L, mm 1550 1550 1550 1550 1550
Q, т (cement) 70 80 90 100 120
D, mm 3000 3000 3000 3000 3000
H, mm 10890 11650 13200 14650 16890
H1, mm 12200 13000 14700 16000 17000
L, mm 1890 1890 1890 1890 1890


Regarding purchasing of equipment contact marketing department
ООО «Incorporated Industrial Company»
Russia, city Kaluga, Svetlaya St., 37

Tel. +7 4842 70 02 52,
+7 4842 70-04-92

Universal cutting system (УРК)

Application of the foam concrete cutting equipment (УРК)

УРК is used in manufacturing lines for producing autoclaved and non-autoclaved gas concrete for receipt of wall and partition blocks with geometrical imperfection from the specified size not more than ±2мм.
Blocks produced on УРК have smooth surface without oil film. Guaranteed cutting accuracy enables to lay blocks on a thin-layer or adhesive solutions.
УРК design allows to produce blocks with various standard sizes using only one kit of forms.
УРК mold is simple in production process. Cleaning, lubrication and assembly for one mold (0,9 m3) takes about 2-3 minutes.

Materials for foam concrete manufacturing

Cellular concrete with the uniformly-cellulated structure, manufactured according to GOST 25485-89 is used for cutting. Material. cured enough for steady cutting (4-12 hours after filling in the form). is used on УРК.

Technological process / foam concrete cutting

After being filled into moulds foam concrete becomes up to necessary strength (4-12 hours depending on the structure and producing technology) at 20-300°С. After that mold with cured massif is placed onto the transportation trolley of the УРК, the top of the metal mold (a cap) is removed, the operator pushes the START-UP button on the control panel and massif is cut into blocks of the specified size in automatic mode. During this procedure a thin layer of the top and edges of the massif are cut off.
After this the cut massif is removed with the pallet from the transportation trolley of the УРК and cures for another 4-8 hours, then blocks are laid on wooden pallets, packed with film and moved to the warehouse.

Control panel has speed of lowering of cutting cars control system, that allows to establish necessary frequency of the block surface finishing (from smooth up to deep wave).

The nomenclature of produced blocks

The minimal thickness of the block – 75мм.
The maximal thickness of the block – is limited by the linear dimensions of the massif.
Within the massif size it is acceptable to fix any necessary dimensions.

Brief technical characteristics of gas concrete blocks

УРК – 3М

Massif dimensions (l/w/h) – 1200/1200/600 mm.
Design capacity – 12 kW.
Maximum power consumption – 7,5 kW.
Design dimensions (l/w/h) – 12/3,1/3,3 m.
Output (actual) – 12 m3/hour.
Operating staff – one person
Continuous operating time is not limited
Operating modes – manual, automatic
Amount of simultaneously cut massifs – two

Regarding purchasing of equipment contact marketing department
ООО «Incorporated Industrial Company»
Russia, city Kaluga, Svetlaya St., 37

Tel. +7 4842 70 02 52,
+7 4842 70-04-92

Porous concrete massifs on the automated contour bend machine

Porous concrete massifs on the automated contour bend machine with electro-programming control “ÐÈÔ-1»

The main aim of production porous concrete items is production of quality products with maximally possible level of specified sizes. Concerning physical-mechanical characteristics of products, made of porous-concrete, it’s obvious that they’ve reached rather high level. But if to speak about geometry – dimensions accuracy and surface quality of wall blocks of majority of producers are usually lacking. Geometry and quality of blocks surface are determined by using technology of formation.

There are many different kind of mechanisms for getting foam concrete and gas concrete mixtures, but only four techniques of wall blocks forming are known at the time.

1. Pouring of foam concrete into bar moulds – the simplest and widespread technique. Working under this technique it’s possible to get blocks with accurate geometrical size using only expensive heavy-gage sheets metal moulds. At seeming simplicity of this technique it’s necessary to have great stock of difference size moulds, that unreasonably increases steel consumption and, consequently, equipment cost. While forming a foam concrete block a peelable cement film with hydrophobic properties is generated on the sides, contacting with metal mould walls. This film makes difficulties while plastering. That’s why it’s desirable to make cutting of side surfaces. Besides pouring of foam concrete into metal mould does not give to blocks accurate edges and right angles. This causes their worse positioning while laying and, consequently, degrades its quality.

2. At the present time the structural cutting on a certain stage of getting the plastic strength by cellular-concrete raw-massifs becomes widespread, but this technique possesses a number of considerable shortages.

Firstly, the dimensions accuracy of blocks is not enough because of string walking, especially in cases of its sliding on the side faces of blocks (so-called «barrel» defect), that prevents laying such blocks on clue and lowers the quality of laying on the mortar.

Secondly, short cutting of the middle bottom block part, which is caused by considerable length of the string and impossibility to provide its enough tension, by horizontal position of strings and rounding by string high-density inclusions – leads to breaking off of the corner pieces.

Thirdly, blocks cutting at a certain moment of technological cycle needs thoroughly technology observance and does not allow to accumulate massifs before cutting, that lowers technology flexibility.

Wavy sides surface after cutting can be estimated as advantage of string cutting technique. The products surface after cutting has small tracery, which promotes better adhesion between masonry mortar and mortar for plastering. Packed surface layer has variotrop structure, its peeling wasn’t observed.

3. Cutting with circular blade saw also has a number of considerable shortages:
– to cut 600 mm height monoblock it needs one disk with large diameter or two disks precisely matched in the cutting line. Either the first, or the second decisions are rather expensive. Disks wobbling leads to low-quality cutting.
– disk (disks) sharpening requires special equipment and is expensive procedure;
– coming in and out of the spinning disk into massif body results in extraction of foam concrete pieces – chippings on blocks are formed. To solve this problem the monoblock needs to harden more, but in this case much dust will be generated during gutting process and cutting saw teeth are abraded faster.

4. Cutting of massifs with closed chain and belt saws has recently acquired more and more adherents. Different Russian manufacturers developed several types of cutting lines and machines. The specific feature of cutting technology on such lines is the necessity to separate massif from the pallet and further multiple tipping of sawn half-finished blocks on several sequentially set contour bend saws during cutting process. The massif should have enough mechanical strength (1.0 MPa and higher up to final strength of the type). This implies the necessity the prolongation of the process of porous concrete mixture curing in metal mould, that reduces to lowering of their turnover, increasing of metal moulds stocks, increasing of volume and area of heat-humidity treatment chambers. Besides, tipping process need additional equipment installation and because of heightened strength of cutting massifs it’s necessary to use expensive belt saws with special carbide teeth, which abraded too fast and this causes abrupt increase of the prime cost of the cutting process.

Besides heightened energy consumption this technique has one more disadvantage – dusting.
In spite of shown disadvantages, in existing value system, when the quality of the product is the first importance fact and becomes the main competitive advantage, producing wall blocks made of porous concrete using mechanical technique comes to the foreground.

On the basis of analysis of the wall blocks production on various famous Russian equipment using belt saw, OOO “IIC” specialists came to the conclusion that majority of abovementioned disadvantages can be eliminated if massifs are sawn after stage of gaining plastic strength within the stage of hardening beginning, when the string cutting technique can not be used by this time.

Firstly, massifs can be cut on the bottom part of the ôîðìîîñíîñòêè, thereby exclude operations of separating and tipping of monoblock and semiblocks.

Secondly, the necessity to use expensive imported carbine saw falls away, cutting process is carried out by cheap Russian belt metal saw in standard model, without carbine teeth.

Thirdly, only one saw is used for cutting.

Fourthly, there is no dusting, because cellular-concrete mixture has certain humidity at cutting moment.

Besides this, it’s important that time period for cutting fulfilment is considerably longer if to compare with string cutting and it’s possible to accumulate dismantled massifs before cutting.
Starting developing of a new contour band machine OOO “IIC” specialist used their own long experience of developing and manufacturing string cutting machines (“ÓÐÊ-2”, “ÓÐÊ-2ì”, “ÓÐÊ-3”). There were produced more then 70 such machines since 2002 up to 2007. At the same time permanent experimental-designing works and researches of new in essence technique of porous concrete raw-massifs cutting using different types of belt saws took place. After prolonged and numerous tests they were managed to find the optimal parameters of cutting mode and choose the most multipurpose type of belt saw. At the end of 2006 as the result of done work the unique cutting equipment of a new generation was created – automated bandsaw cutting machine with electronic-programmed control «Ðèô-1» for cutting large, 1240?12400?610 mm sized, cellular-concrete massifs.

The machine set includes unit for cutting the top side of the massif, one horizontal contour band module and è coordinating-transporting unit. All the mechanisms variable-frequency electric drive. «Ðèô-1» is equipped with convenient and easy-to-work control panel. Necessary dimensions of cut (block dimensions) are set on electric panel of operator. None of additional operations for machine changeover for new sizes are necessary. Besides, the display on the operator panel shows the analysis of machine work in real-time mode. Manual control is provided for adjustment the machine or for working in semiautomatic mode. Positioning and transporting of the cutting massif takes place on the coordinating table of the machine.

The machine works like that: pallet-trolley with massif, hardened enough, is taken by special positioning transporter and goes to cutting machine «ÐÈÔ-1». At the first stage the top side of the massive is cut off by screw cutter (up to 30 mm) and block length is formed (600 mm). The bottom side of the massif has strictly horizontal surface due to usage of rigid thick-walled bakelized veneer sheet in the pallet. At the second stage cross and length cutting of the massif by horizontal saw with sequential number of cycles of cutting module lifting and lowering takes place; cutting step and width and height dimensions are fixed by the coordinating table operation. After this parted into blocks massif is rolled on the overpassing trolley to the pushing transporter to be places into tunnel thermos chambers for heat and humidity treatment.

Besides this, «Ðèô-1» can be equipped with a belt knife for calibration of top and bottom sides of massif under special order.

Machine can operate with saws of two types:
– cutting massifs with gained plastic strength;
– cutting massifs with gained designed strength.

Specification for «ÐÈÔ-1»

Capacity (regarding final products), ì3/÷ ………………………………………………………… up to 5
Design capacity, kWt…………………………………………………………………………………………… 4,5
Floor-level space of the machine with coordinating-transporting unit, mm………4,6? 4,5
Weight, kg …………………………………………………………………………………………………………… 3500
Cutting accuracy, mm……………………………………………………………………………………………±1
Cutting elements…………………………………………………………………………screw cutting and belt saw (horizontally located)
Quantity of saws……………………………………………………………………………………………………1
Width of kerf, mm …………………………………………………………………………………………………from 1,1 till 1,5
Maximum height of cut, mm …………………………………………………………………………………600
Dimensions of mould for producing foam concrete massifs, mm…………………………1240 ? 1240 ? 600
Block dimensions, main standard size, mm ……………………………………………………………198 ? 300 ? 598
Finished products outcome from one massif, m3 …………………………………………………0,86
Quantity of cut sides in block ……………………………………………………………………………… 5 (6)
Time for one massif cutting in automatic mode, min ……………………………………………9,5.
Time for machine changeover for a new size, min ………………………………………………… 1
Time for belt saw exchange, min …………………………………………………………………………… 5
Lifting mechanism drive ……………………………………………………………………………………… electromechanical
Operating modes ………………………………………………………………………………………………… automatic, semiautomatic, manual
Permissible strength, kg/sm3 ……………………………………………………………………………… from 2 till 45

One operator is enough to operate the machine. The control can be handled manually or in automatic mode.
The main advantage of the present cutting technology can be named the possibility of the short equipment changeover to produce blocks of any size. Among other advantages are: accuracy and quality of wall blocks surface. Such blocks allow to make masonwork using special thin-layer mortar clue.
More then 10 production samples of “ÐÈÔ-1”were installed to the beginning of the 2008 we are planning to produce at our enterprise not less the 30 such machineries in 2008.

All the experience of machineries usage in production conditions showed the high reliability of all actuating mechanisms, extremely low level of expenses for raw materials (for 1 m3 ãof final products from 10 till 15 rubles, dependently on the filler used).

Regarding purchasing of equipment contact marketing department
ÎÎÎ «Incorporated Industrial Company»
Russia, city Kaluga, Svetlaya St., 37

Tel. +7 4842 70 02 52,
+7 4842 70-04-92

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