The confined corner site is 0.8ha in size, and is bound on two sides by high-rise buildings and by busy streets on the other two sides. The BTS Skytrain also runs along one side. The finished building will have a built area of 81,400 sq m and is scheduled for completion in September 2011. Both cranes are standard units that can lift 12t at a maximum radius of 50m. The cranes can operate with raised jib angles between 15-70˚. They have been erected on 1.6 x 1.6m masts.