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Supertalls Discussions of projects under construction between 300-599m/1,000-1,999ft tall.
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Old November 24th, 2013, 12:06 PM   #861
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Old November 24th, 2013, 02:40 PM   #862
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Now that's a well-placed traffic sign.
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Old November 24th, 2013, 02:45 PM   #863
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Now that's a well-placed traffic sign.
very effective
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Old November 24th, 2013, 08:23 PM   #864
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Now that's a well-placed traffic sign.
That man on the walking sign should have wings!
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Old November 24th, 2013, 08:43 PM   #865
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Old December 13th, 2013, 08:51 PM   #867
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Zero cycle, October 2013.

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Old December 14th, 2013, 11:00 PM   #868
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Zero cycle, October 2012.
October 2013
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Old December 15th, 2013, 04:55 PM   #869
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Like it or not we will be a site to implement the new



In the Lakhta Center project one of the zero cycle stages has been completed. Social and Business Center Okhta CJSC Executive Director Alexander Bobkov told BG reporter Agata Marinina about the status of the construction and how the design influences the future of the city.

BUSINESS GUIDE: At present the zero cycle works are underway at site. Are all the deadlines in effect?

ALEXANDER BOBKOV: Absolutely. Everything what we planned for this year has been completed already or near to completion. In August we completed the first important stage, produced the pile foundation under the main building of the complex, the tower. In total 264 piles 2m in diameter and 82m deep. Each of them itself is a complicated engineering facility dimensioned like a 25-storey building.

The construction of the required zero cycle component has been completed, the so-called diaphragm wall. It is a shoring structure of the future pit is a pentagon in shape with a wall 1,2m thick and 30m deep. The wall envelopes the foundation and provides a kind of solid lock to support the soil mass and underground water. The works are proceeded related to the shoring system. In parallel the pit excavation is underway for the foundation structures of the tower. Next year we are to complete the zero cycle works.

BG: There were no surprises, were not there?

Nothing beyond the boundaries of the understandable. I hope that everything will proceed in the same manner. In a few cases we came across complicated geological conditions which we overcame not at once but by engaging additional equipment and plant. For example during the drilling at a larger depth we came across moraine deposits, large boulders, to pass and crush them super-power special mechanisms were required.

BG: It means that there is nothing to be concerned about?

I would be not straight forward saying like that. Though the probability of irregularities which are typical to any construction site in our case is almost zero. The transformation of such a complex which recently has been only designed on paper into a complicated structure from concrete and steel is a multi-stage process and sometimes it is a difficult-to-predict process. Of course there are always concerns. However we try our best to foresee negative scenarios rather than fighting with the problems as they arise. Taking into account the complexity, dimensions and massive nature of the facility we deliberately double and even triple the monitoring and control system. For example the quality of the tower pile foundation produced was checked three times by us and by three independent companies.

BG: What do you think if the mistakes made by others can teach you?

We are likely to make our own mistakes as well. Often I can hear : "We are aware of and able to do everything". It is false. When people say so they either tell a lie or are misled. Own mistakes are inevitable. However the depth and the speed of response are of a high significance. At present our priority is the exclusion of critical errors which are very difficult to correct. It is where our close attention is paid to and it is where the best experts in the sphere of construction are involved.

BG: What is the main obstacle for Lakhta Center?

In our case it is a linear dimensions which is exposed to the resistance of air, earth gravity and public opinion. The construction of a 500-m building and ten buildings 50m tall is basically two absolutely different things. One can speed up up to 200km per hour almost by any car, whereas up to 250km per hour by a few cars only. And few cars can speed up up to 250 or 300 km per hour. Though the difference is not so high. We have the same situation. Each additional 50m will lead to a manifold increase in the complexity of the implementation. Everybody is aware that when heated any solid substance expands, and when frozen it shrinks on the contrary. Now imagine a tower 462m tall. The surface on the one side is always heated whereas on the other side is not. Exposed to direct solar beams even in winter the temperature on the one side does not go down below 10 degrees below zero. It is just physics. However to resolve this objective the specialists have to calculate and simulate, revise, re-calculate, re-simulate, provide testing samples and only after that take the final design solutions which are implemented at site.

BG: Can Russian specialists cope with these tasks or are foreign employees employed?

Personally I do not have any doubts in our specialists and they have proven it on many occasions. Over 60 years ago the high-rise buildings were designed and built in Moscow and 50 years ago Ostankino TV tower was built. Let alone a dozen of unique defense and energy facilities unique in dimensions and purpose. I am aware that the ideas of the modern Russian designers are used at unique facilities in other countries. And it makes us happy. The team at the project is international. Apart from Russian specialists the best specialists from the UAE, Germany, Korea are involved. As it is known, the concept of the complex was developed by the foreign specialists and the design documentation of the main design stage was developed by the Russian specialist.

BG: A considerable quantity of construction materials of an appropriate quality is required for the project. Will the local suppliers be enough?

Mainly our market of construction materials is quite sufficient. The involvement of foreign suppliers is of course required but in a few cases. Mainly it will refer to the engineering equipment and special machinery.

In Petersburg the construction can be achieved even such large scale with the use of local and Russian materials. The complex requires a large though still measurable quantity of structural materials: a few thousand cubic meters of reinforce concrete and dozens of thousands of steel. This quantity extended within four years is achievable for the modern market of materials. The construction industry over the last 10-15 years has been considerably modernized at least in the segments where the demand is fairly steady. In Petersburg it is actually the case. And if a large and complicated order is placed in the market for special high strength brands of metal and concrete so these orders are closed at a proper level of quality and completion dates.

However the main advantage of all these processes is that the knowledge, technologies having been proven once remain. The suppliers and contractors selected in our project will use their gained skills further on in other complicated and modern projects.

BG: I.e. you do not rule out that new projects of the same scale will appear?

Under any circumstances Petersburg is a very large-size city, such a city will definitely generate new interesting projects. An overall situation makes it feasible. The western Speed Diameter is a vivid example. The kilometers of artificial facilities underwater alien to our soil with the same linear expansions, the only difference is that they are horizontal.

BG: What do you think, will Lakhta Center be an impetus for the development of new standards in construction?

Like it or not our project will be a site to implement the new and the brand new. And with the start of the construction stage it has become inevitable in a good sense.

BG: Do you have any concerns that the creation of the transport infrastructure can be left behind the construction of the complex?

Frankly speaking there are some concerns. And we will have to minimize the risks of a delay in the nearest future.

BG: How can it be done?

Explaining, substantiating and proving the necessity to start implementing the decisions having been taken long time ago. The selection of a location for Lakhta Center is mainly dictated by the city’s plans related to the development of Severo-Primorsk part. These are the programs of the development of transport infrastructure of the site which date back 10-15 years ago. Yes, we as the future occupants of the new business district would like to have a metro station nearby.

BG: The design includes a center for amusing science for children, a scientific and educational complex, a sports complex, parks and gardens, everything will be created at the expense of the investor?

Why if the investor declares and does something beyond direct commerce it always arouse suspicion? Everybody expects a catch in it.

BG: However Petersburg cannot boast a large experience in the construction of public facilities at the expense of a private investor, can it?....

It is easier to believe in the bad. No arguments are required for that. I can accept that in part. However I would like to confirm once again that our plans have not been changed. The public part of the complex will be considerable and comparable to the business part. By the way, it has become even larger after the layouts have been clarified. All the construction and process quantities will be implemented at the investor’s expense. We are going to commission the complex as a whole, including the business and public parts divided into various functional zones.

BG: Somebody will have to manage this functionality. When will you take your decision who will manage it?

I hope that during the construction period we will find professional operators, reliable hands. And we are not going to master the function alien to us. We are selecting the most professional and competent market participants. I hope that all the spaces designed will be in demand and as a result commercially attractive.
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Old December 20th, 2013, 11:06 PM   #870
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tournament http://xl.skyscrapercity.com/?page=o...erday=20131221
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Old December 21st, 2013, 06:33 PM   #871
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Planetarium

A planetarium will be located in the tower upper part of the building stylobate adjacent to the tower.
The authors of the concept decided to efficiently use the unique architectural particularities for educational and enlightenment purposes.
Apart from a usual star sky panorama, modern telescopes will be housed there. Separate high speed lifts will be used to get to the upper floors.

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Old December 22nd, 2013, 02:24 AM   #872
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I'm so happy for Russia, First Mercury City Tower and now this one! I hope they keep building! Maybe one day they will build the masterpiece Russia Tower on a different site somewhere.
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Old December 22nd, 2013, 12:15 PM   #873
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"in total 264 piles 2m in diameter and 82m deep."

?!

Woah, I'm in between amazed and perplexed
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Old December 22nd, 2013, 09:03 PM   #874
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Quote:
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"in total 264 piles 2m in diameter and 82m deep."

?!

Woah, I'm in between amazed and perplexed
No. 55m and 65m - length of piles.
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Old December 23rd, 2013, 06:20 AM   #875
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A box-type foundation consisting of two massive structures, each being one floor high (the upper slab is 2m, the lower slab is 3,6m) will be the base of the tower. The bottom of the foundation will be located at the depth of 20m.
In its center the structure is strengthened with traverse beams to add extra stiffness. In its turn, the box-type foundation is mounted on 264 piles 2m in diameter and 61m long.



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Old December 23rd, 2013, 05:33 PM   #876
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Thanks a lot to both; just the whole foundation looks an impressive work
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Old December 26th, 2013, 12:22 PM   #877
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This foundation is so deep...
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Old December 26th, 2013, 09:19 PM   #878
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The Petronas Towers' foundations are even deeper, at 120m (393 feet 8 13⁄32 inches)
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Old December 26th, 2013, 09:44 PM   #879
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This should get some good progress in the coming year
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Old December 27th, 2013, 06:09 AM   #880
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what progress now? i think they just done the bored pile.
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