The MAIN TOWER at a glance

Height 200m (including antenna: 240 m)
Floors56 above ground level, 5 below ground level
Total lettable spacefor commercial use: approx. 62,500 m², 250 parking spaces

Office space

 

 

approx. 1,160 m² of efficiently usable office space per floor, can be divided, with full range of infrastructure in the core zone and integrated support areas;
flexible floor space layout: individual, combination and open-plan offices possible;
clear room height of 2.75 metres

Additional uses:

 

 

Staff canteen and café on 2nd floor
Fine dining restaurant on 56th floor
Gym on 54th floor

Sustainability certification: LEED Platinum (from 08/2016)
Active facility management lobby staffed 24 hours a day / 7 days a week by reception and security personnel

Building security

video surveillance of all entrances;

access control by single entry system on ground floor
Windows2.550
Steps 1.090

Lifts

 

 

26 passenger and
3 goods Elevators 
Maximum speed: 4 to 7 m/s

Construction period3  years

Information about the MAIN TOWER from A to Z

You will find answers to frequently asked questions about the MAIN TOWER under the terms listed here.

A

Air-conditioning

In the MAIN TOWER there are modern ventilation and air conditioning systems which with cooling and heating ceilings provide a balanced air conditions in the rooms.

Architects

In 1991 an architects' competition was held. Among the renowned architects from around the world, Schweger und Partner, Hamburg was awarded the prize.

Art

The American video artist Bill Viola presents his installation "The World of Appearances". Stephan Huber created "FRANKFURTER TREPPE / XX. JAHRHUNDERT".

B

Building height

With its 200 metres, the MAIN TOWER is Frankfurt am Main's fourth highest skyscraper. Commerzbank (258 m), Messeturm (256 m), DG Bank (208 m)

Building time

Up to 1,000 workers built the MAIN TOWER in 3 years.

C

Computer simulation

To minimize air noise caused by the fast elevators, NASA computer simulations were carried out and streamlined exterior claddings were developed for the cabins.

Construction method

In erecting the MAIN TOWER, the so-called Deckelbauweise principle "construction work under top cover" was employed. This means that building work both upwards and downwards was carried out simultaneously.

D

Demolition

Demolition of the existing building on the planned site of the MAIN TOWER started on 22.05.1996

E

Earth pendelum storage heater

Water circulating in a closed circuit supports the generation of heat or coolness for the MAIN TOWER's rooms.

Elevators

With 4 to 7m/sec, the elevators in the MAIN TOWER are among the fastest in Germany.

Energy

The MAIN TOWER is an energy-efficient building with sophisticated domestic engineering techniques.

F

Facade

The facade surface is divided into three parts: The building's base floors: stone facade, under preservation order, the square tower: bronze, round tower non-reflective glass facade. Further information Structure & facade

Floor

The MAIN TOWER consists of 5 basement floors (underground) with parking spaces, storage rooms and the technical centres and 56 above ground floors, with offices, restaurant and hr-Studio (a studio of the Hessian broadcasting corporation), on two of which are observation platforms.

Foundations

The foundation of the MAIN TOWER consists of 112 reinforced concrete piles with a diameter of 150 - 180 cm, reaching to a depth of 50 m. In addition, the MAIN TOWER has a foundation plate which in the middle of the building is 3.80 m thick.

Foundation slab

On July 4th 1997 the foundation slab was concreted.

Foundation stone ceremony

The foundation stone was laid on October 10th 1996.

Foyer

The American video artist Bill Viola presents his installation "The World of Appearances". Stephan Huber created "FRANKFURTER TREPPE / XX. JAHRHUNDERT".

G

Glass facade

The round tower has a facade without visible window profiles, whereas the square has a element facade with deliberately emphasized window profiles bronze. Further information Structure & facade

Glass technology

With regard to the facade construction, the use of the latest glass technology for the MAIN TOWER is especially remarkable.

Gross floor area

Both above and below ground, gross floor area is 101,705 m².

Ground plan

The MAIN TOWER consists of a round tower (200 m high) and square tower (170 m high).

H

Heat generation

The MAIN TOWER has its own combined heat and power station.

Height

200 m

Helaba

Landesbank Hessen-Thüringen Girozentrale is the general tenant of the MAIN TOWER. Further information can be found in the section Art in MAIN TOWER.

Historical facade

The historical facade was dismounted stone by stone, the stones being numbered and then rebuilt into the facade to preserve its historical appearance.

I

Investment volume

The investment sum amounts to approx. DM 700 m.

L

Lettable space

Total lettable space amounts to 62,957 m².

Light

Thanks to the room-high window front, the MAIN TOWER enjoys a high degree of natural daylight.

Location

The MAIN TOWER is located in the heart of the bustling, cosmopolitan economic metropolis Frankfurt am Main, in the centre of the banking quarter and within easy walking distance of the shopping streets, the Alte Oper ("old opera house", now a concert and conference centre), as well as the Freßgass' with its numerous restaurants and bars. How to get and park here.

N

Name

The original working title of the project was Tower II. After conclusion in September 1996 of a competition to find a name for the building, MAIN TOWER was chosen out of 361 suggestions.

O

Observation plattform

The observation platform of the MAIN TOWER on Floor 55/56 is the observation platform in Frankfurt to offer public access.

Office space

Office space per floor is approx. 1,200 m².

Open to the public

Access to the MAIN TOWER is open to the public.

P

Parallel-opening windows

The windows in the MAIN TOWER can be moved outwards electronically parallel to the facade surface, and unlike normal windows, are not tilted inwards or turned.

Principal

The principal is Helicon Verwaltungsgesellschaft GmbH und Co. Immobilien KG, an enterprise of 36 savings banks, principally from Hesse and Thuringia.

Project development

The project was taken care of by OFB - Bauvermittlungs- und Gewerbebau GmbH, Frankfurt and Hines Immobilien GmbH, Houston, Texas.

R

Restaurant

Food affairs invites guests to use its public restaurant in the MAIN TOWER, with seating accommodation for 80 people and a further 10 places at the lounge.

Roofing ceremony

On March 10th 1999 the roofing, ceremony of MAIN TOWER was held.

Round tower

The round tower reaches 200m, the maximum height of the building, and with its almost circular glass facade is the most striking part of the MAIN TOWER.

S

Security

Despite or rather because of the openness of the MAIN TOWER, it has a well-elaborated security concept with security personnel, surveillance cameras and a sophisticated entry control system.

Silent cooling cellings

The cooling ceilings in the office rooms function as "upside down" floor heating and generate no noise.

Site area

The area of the plot is 3,355 m².

Square tower

The Square tower is six floors lower than the round tower and reaches a height of 170m.

Stairs

To reach the pinnacle on foot you have to climb 1,090 stairs!

T

Technology

The MAIN TOWER is equipped with state-of-the-art and resource-conserving domestic engineering systems.

Tenants

On a total lettable space of almost 62,000 m², about 2,000 people are employed.

U

Underground engineering

Special foundation work was started on August 8th 1996.

W

Walled-in

Above ground, 83,100 m³, below ground 18,600 m³

Weight

The shell of the MAIN TOWER weighs 200,000 tonnes.

Window

The MAIN TOWER has 2,550 openable windows over the whole width of the rooms, from floor to ceiling.

Z

Zoning plan

The MAIN TOWER is located in the heart of Frankfurt. The area in which the MAIN TOWER is situated is a mixed commercial and residential locality.

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