Reinforced Concrete Design Project Five Story Office Building (Hand Calculation)
following ACI 318-11. The framing arrangement and column locations of the building were
provided based on architectural and structural requirements. The structure system of the office
building is a reinforced concrete frame with a one-way slab and beam floor system. This report
covers the design process in the following order: the calculation of the expected loads on the
structure, the design of the slab depth, the estimation of the column sizes, the design of the slab
reinforcement, the design of the T-beam reinforcement for both flexural and shear, the
calculation to check crack control, the calculation to check T-beam deflections and finally the
design of the column reinforcement. Additionally, figures displaying the placement of the steel
rebar in the structure are contained in the report.
The details of the design can be found within the report. The basic design of the office building
includes seven (7) inch slabs throughout, fifteen (15) inch by fifteen (15) inch square columns
and T-beam depths of eighteen (18) inches for the exterior column spans and twenty (20) inches
for the interior column spans. Due to deflection control issues that arose in this preliminary
design, some of the interior beam lines have to be re-designed in further iterations of this design.
The maximum depth of the interior T-beams would be twenty-two (22 inches). The
reinforcement is varied throughout the project depending on necessary loads and ACI 318-11.
The slab reinforcement spacing would also have to be edited in future designs because it did not
comply with ACI 318 crack control limits.
includes seven (7) inch slabs throughout, fifteen (15) inch by fifteen (15) inch square columns
and T-beam depths of eighteen (18) inches for the exterior column spans and twenty (20) inches
for the interior column spans. Due to deflection control issues that arose in this preliminary
design, some of the interior beam lines have to be re-designed in further iterations of this design.
The maximum depth of the interior T-beams would be twenty-two (22 inches). The
reinforcement is varied throughout the project depending on necessary loads and ACI 318-11.
The slab reinforcement spacing would also have to be edited in future designs because it did not
comply with ACI 318 crack control limits.
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