Soaring 385 meters (1,260 feet) above the surrounding cityscape, the PIF Tower (formerly known as the CMA Tower) is the centerpiece structure of the King Abdullah Financial District. The iconic 80-story crystalline office tower, designed in a successful joint venture between Omrania and HOK , is currently the tallest building in Riyadh. It heralds the beginning of a new era of global financial leadership within Saudi Arabia's capital city.
The super high-rise tower was engineered to withstand powerful wind loads without sacrificing usable floor area. It is vertically organized as three office blocks separated by “sky lobby” and mechanical floors.
The tower's design integrates a high-performance solar control system to moderate the intense light and heat. An external layer of fins, gantries and perforated panels provides shade, amplifying the thermal efficiency of the triple-glazed, insulated glass unitized curtain wall. Together, these shading devices minimize solar gain and internal cooling loads, reducing HVAC requirements. An integrated building maintenance system also allows for extremely efficient cleaning of the facade—very important in a climate where windblown sand quickly accumulates on building surfaces.
The crystalline profile of the CMA building helps reduce the severity of wind vortex shedding on the structure. Faceted from base to crown, the tower does not significantly taper as it rises. The use of concrete-filled steel tubes for perimeter columns improves both structural efficiency and interior space allocation.
To maximize usable floor area, the core of the tower incorporates the space-saving technology of Thyssenkrup’s TWIN elevator system, in which two elevator cabs travel independently in the same shaft, one cab above the other. The system decreases both the number of shafts and the average travel time between floors.