Milad Tower

Milad multi-Purpose Tower has been designed and built by BolandPayeh Company. for the purpose of providing telecommunication services and creating a memorial structure as a symbol for the country. This tower is one of the most prominent projects in the Middle East which is currently operative. The tower is the 17th tallest self-stand structure which has been built by the human beings up to now. Milad tower was the 4th tallest telecommunication tower during its construction period while is the 6th tallest one in the world now. The geometry of Milad Tower has been inspired by the design of Dolata bad Garden in Yazd based on the power lines transfer strategy. An architecture-dependent decoration of this dome has not the complexities as could be seen in most other domes and keeping its simplicity. It has created a unique proportionality. General geometry of the structure of Milad Tower begins by an octagonal section attaining to the dome section at its end which is a simple sample of Iranian traditional architecture. This super structure weight is about150 thousand tons (equivalent to the average weight of 2 million people). Total height of the tower from its foundation to the tip of its antenna is about 435 meters which consists of five main parts; foundation, lobby, main Shaft, head structure including sky dome and antenna. The main axis of the tower is a concrete structure with a height of 245 meters from the ground floor which was executed using sliding form technology. The tower has a specific wind tunnel modeling for the earthquake load effect. The damper has been considered in the antenna mast. The tower can bear an earthquake with a power to destroy Tehran completely.

Lali Cable-Stayed Bridge

Lali Bridge is the longest Cable-Stayed bridge in Iran which was designed and constructed by BolandPayeh Company. Regarding the construction of Gotvand Dam in Khouzestan Province, it was inevitable to construct this new bridge as a strategic infra-project on Karoun River, between Lali and Masjid Soleiman cities located in the western south of the country. The old bridge of this route which was constructed by the British contractors in 1950, was located in the upstream of this bridge.

Regarding the construction of Gotvand Dam, the water level has been increased as much as 126 meters and the old bridge and the strategic oil and gas pipeline of the region would be out of service. As a consequence, it was required to design and build Lali Bridge in this region. Lali Bridge is crossing Karoun River valley with a middle free span of 260 meters and two lateral spans of 100 meters a total length of 460 meters. The bridge is supported by two A-shaped piers-pylons of 150 meters high. There are two caissons as the pier-pylons’ foundations. The caissons are two hollow shafts with an outside diameter of 10 meter, 1-meter thick and a height of 20 meters. The pier-pylons were constructed using sliding formwork system and the caissons were constructed using jump formwork system. Cable system of this bridge had a promoted fan-shaped layout, capable to bear the traffic and gas and oil pipeline load as predicted for it. The bridge was tested in a wind tunnel simulation process for the wind and earthquake design.

Tehran Subway, Lines NO.3 and 4

BolandPayeh Company developed its services in the field of national rail and transportation systems by implementing engineering, procurement, construction and finance contract (EPCF) of Lines No. 3 and 4 of Tehran subway. Line No. 3 of Tehran subway is the longest metro line in the Middle East of about 37 kilometers long. This line will facilitate the transportation of more than 15 million people in metropolitan Tehran. This line with 26 stations begins from western south of Tehran and ends at north-east of Tehran. Line No. 4 is 21 kilometers long and has 21 passengers’ stations. The Line No. 4 begins from the eastern part of Tehran, called Kolahdouz Terminal and ends in the western part of Tehran called Eram Sabz Terminal. Line No. 4 has a strategic branch to Mehrabad International Airport. Regarding Travelling distribution management plan, Line No. 4 has an important role because it has the most intersection with other public urban travel systems. Services provided by BolandPayeh in the line No. 3 contains of tunneling and tracking of about 15 kilometers, execution of 12 underground passengers’ stations, 10 ventilation buildings and one T-shaped intersection structure. BolandPayeh also designed and built the greatest underground intersection station between lines No. 3 and 7 during 18 months as unprecedented record in the national railroad industry. Services provided by BolandPayeh Company in the line No. 4 consists of tunneling of about 2 kilometers, tracking of about 12 kilometers, 4 underground passengers’ stations, 2 ventilations buildings, 2 T-shaped intersection structures for the connection between Mehrabad Airport route and lines No.4 and Tehran West and East Subway lubritorium.

Shahid Montazeri Powerplant

Shahid Montazeri Powerplant, located in the northern Isfahan near Shahin’shar, is one of the main powerplant of Iran, with the capacity of 1600 megawatts. The powerplant consists of 8 steam units with the capacity of 200 megawatts located in a land with an area of 200 hectares. The design and build works of the cooling system using sliding formwork system of Polikon-U type, is the first experience of such kind of concrete hyperbolic cooling tower execution in Iran instead of the steel ones. This experience led to stop importing of the specific steel plate for the cooling tower and support the local engineering capability. The tower height from the ground level is 118 meters and the total height considering the underground structure is 122 meters. The base diameter is 103 meters. The hyperbolic concrete shell starts as a circular cross-section with a diameter of 90 meters and reach to its end by a circular cross-section with a diameter of 63 meters. The concrete shell thickness changes from 1.2 meters at the start point to 18 centimeters at the end point of the shell. The towers stay using 29 sets of X legs at a ring-shaped foundation with an outside diameter of 106 meters, a width of 3.5 meters and a depth of 1.2 meters. The concrete cooling tower with the hyperbolic shape is known as one of the most stunning industrial structures in the world.