Pennzoil Place vs One International Place Building

Comparing the Pennzoil Place and the One International Place Building is compelling because they were both designed by Johnson/Burgee Architects, yet they stand in different cities (Houston, TX and Boston, MA), and were completed a decade apart.

What this will allow us to see, is how the same firm's approach adapted to different places in different periods of time.

The One International Place Building is clearly the larger tower of the two, both in terms of height and number of floors. It rises to 600ft (183m) with 46 floors above ground, while the Pennzoil Place reaches 522ft (159m) with 36 floors above ground.

Of course, each project may have faced different briefs or regulatory constraints, which we don't really know about and could also explain the outcome.

Both the Pennzoil Place and the One International Place Building were designed in line with the aesthetic conventions of the Postmodernism style.

At the time, this style was at the height of its popularity. So Johnson/Burgee Architects followed what was in many ways expected at the time, producing designs that fit comfortably within contemporary architectural norms rather, than breaking with convention.

Both the Pennzoil Place and the One International Place Building were designed to serve as commercial towers, and that has remained their main use since their completion, serving similar roles in the urban fabric.

Both towers provide significant parking capacity, with Pennzoil Place offering 525 spaces and the One International Place Building offering 400.

Both towers share the same structural solution, a Frame system.

A frame structure uses a grid of columns and beams to carry the building's loads. This frees the walls from structural duties, allowing for flexible floor plans and larger windows.

However, when it comes to the facade, both buildings use different approaches. The Pennzoil Place uses a Curtain Wall facade, while the One International Place Building uses a Window Wall facade.

A Curtain Wall facade like the one seen in the Pennzoil Place uses a lightweight glass curtain wall hung from the structure, while a window-wall facade like the one seen in the One International Place Building uses panels fitted between floor slabs, leaving slab edges visible.