by Jeffrey C Kadlowec, Registered Architect Continued increases in land value within urban centers have given rise to taller and slender structures, both residential and commercial [1]. The framing system used in these is typically dependent upon the building height and construction costs. Low-rise residential buildings are usually platform framed with wood or steel studs often atop a concrete parking area or commercial units. Mid-rise buildings are commonly constructed with steel skeletal frames. High-rises are more likely utilize a concrete superstructure due to compressive strength and fire resistivity. The effects of dead and live loads on these structures increases relative.