Official ground breaking. Foundation works carried out by Multiplex RSY Concert and the rest of the year of high quality of structions. Workers began to install 360 concrete piles before placing a 5m thick mat over the top.
November 1992
Concrete Constructions Ltd took over the project, work on the superstructure began. The contractor achieved 1.5 floors per month using jump forms and pumped concrete, the construction pace quadruple to 6 floors per month after the first 21 floors were built.
1995
Installation of mechanical and electrical services. Completion of the 19 level parking and retail podium.
August 1996
Concrete pouring ceremony on the tower's 85th floor.
June 1999
Official opening of the Baiyoke Sky Hotel
August 1999
is the first station that has established TV transmitter station and install TV transmitter with antenna on the top of tower for broadcasting at that time on UHF-Channel 29 since 1 August same year. As a result, other television stations also performed in the same manner in the near future Only each station then broadcast on different channels.
Other Technical Info
This building contains a total 60,000 cubic metres of cement. Its floor plan is typically 50m square plate with corner columns. A 30m diameter cylindrical plate begins at the 80th floor. Up to 360 piles of concrete were driven through clay into thick sand layer to the depth of over 50m and sealed with a 5m thick mat. The building represents one of the most sophisticated uses of concrete in Thailand, with 60N/sq mm concrete forming the main material for the columns in a lightweight composite structure along with steel box girder reinforcement. The concrete core is surrounded by a square pattern of hollow columns fused together by key studs with a 200mm outer layer of 60N high strength concrete. Columns start solid at the base and becoming hollow at the top. The erection of tower was sped up with the use of VSL Climbform self-climbing, modular system for construction of vertical walls. It is the first time VSL Climbform technology was in use in Thailand. Concrete were pumped to a 300m height level using Putzmeister pump. And from the 300m level the concrete were lifted by a Favelle 310D luffing jib tower crane. Baiyoke 2 was the tallest reinforced concrete building in the world at the time of completion in 1997. This record was surpassed by CITIC Plaza building in Guangzhao which was completed a year later. Site testing shows the building sway to a cycle of about six seconds. Expert sources suggested that the building may have sunk by 40mm during construction and may have impacted on the foundations of several smaller buildings nearby. The estimated cost of the project was put at around 3.4 Billion Baht. Initial plans call for a 140m high communication tower to be placed on top of the building although the developer has opted for a smaller radio transmission tower. Baiyoke 2 was the world's tallest hotel at the time it was completed - but this was never registered in the Guinness Book of World Records. The JW Marriott Marquis Dubai which completed in 2012 is currently the tallest hotel.
