G+11 Office Building Structural Design

Undergraduate RCC Structural Design Project | Civil Engineering

This undergraduate final-year civil engineering project involved the structural design calculation of a G+11 office building in Kolkata supported on pile foundation. The project focused on developing a safe and serviceable high-rise building design under gravity, wind, and seismic loading conditions.

The report covered the design workflow from building layout and structural planning to load calculation, slab design, beam and column sizing, moment-distribution analysis, wind-load analysis, seismic-load analysis, beam reinforcement, column reinforcement, staircase design, water tank and lift-machine-room load consideration, pile reactions, pile foundation, and pile-cap design.

The project used Indian structural design references including IS 456:2000, IS 875 Part 3:1987, IS 1893 Part 1:2002, SP 16, SP 34, and standard RCC design references. The basic design included 145 mm thick slabs, 500 mm × 500 mm square columns, and 325 mm × 650 mm beams along longer and shorter spans, with reinforcement varied based on loads and code requirements.

For my portfolio, this project represents the RCC and high-rise building design foundation of my civil engineering education. It shows early exposure to structural load paths, lateral-load analysis, reinforcement design, pile-foundation design, and code-based engineering calculation.

Tools and Methods

RCC design · Slab design · Beam design · Column design · Wind-load analysis · Seismic-load analysis · Moment distribution · Pile foundation · Pile-cap design · IS 456 · IS 875 Part 3 · IS 1893 Part 1 · SP 16 · SP 34

My Role

Independently prepared the structural design report and calculation workflow, including slab, beam, column, wind, seismic, and pile-cap design calculations, with supporting drawings and code-based design references.

Key Outcomes

• Developed a structural design calculation report for a G+11 office building in Kolkata.
• Designed slabs, beams, columns, staircase, and pile-cap components.
• Evaluated gravity, wind, and seismic loads.
• Used moment-distribution and cantilever-method analysis for critical frames.
• Considered wind and earthquake effects on a multi-storey building.
• Designed pile foundation and pile-cap components.
• Applied IS 456, IS 875 Part 3, IS 1893 Part 1, SP 16, and SP 34 references.
• Prepared supporting drawing annexures for general arrangement, slab reinforcement, beam, column, staircase, and pile details.