what is the actual base of the sears tower
http://chicago.travelape.com/attractions/sears-tower/
Nine bundled square tubes in a 3 x 3 pattern, each with 75 x ft feet base but different heights, located at
233 S. Wacker Drive.
It is now called Willis Tower after the new owner.
The bundled tube design was considered revolutionary at the time, but is also being use at the newly opened Burj Khalifa tower in Dubai, which is twice as high.
To find the actual base of the Sears Tower, you can use various sources such as architectural plans, building records, or official documents.
Here are a few steps you can take to find the information:
1. Start by searching for the official name of the Sears Tower, which is now known as the Willis Tower. Using this name in your search will yield more accurate results.
2. Look for reputable sources such as the official website of the Willis Tower, where they might provide detailed information about the base or foundation of the tower.
3. Check architectural records or plans. Architectural firms involved in the construction may have published documents about the tower's design and construction process. These records can often be found in archives or libraries, or you may be able to access them online if they have been digitized.
4. Consult building codes and permits. The base and foundation specifications would have been approved during the construction process. The local government or building regulatory agency may have records of building permits and codes related to the Sears Tower.
5. Engage with experts or professionals in architecture or engineering who have knowledge about the Sears Tower. They may have access to technical details or records that are not published in commonly available sources.
Remember, the information you find should be verified from multiple reliable sources to ensure accuracy.