The Villa (residential structure) was 3 skeletal reinforced concrete stories, see fig (47, 48). It had ribbed slabs, shell roof, continuous straight/curved beams, columns, shear walls, spread foundation and free standing stair. See Appendix for further pictures and explanation.
My Roles in the Project (in Detail):
1) I checked the manual calculations of the villa (which done by the supervisor) by using 3D modeling technique, see fig (49). The model that simulated the entire Villa was accomplished using finite element capability in STAAD PRO. For analysis I utilized sub-models and global model methodology. 3D bar elements with 6 DOF in each node were used to model the ribbed slabs, beams and columns. 3D (triangular and quadratic) shell elements with 6 DOF in each node were used to model the shear walls, stairs and the shell roof, see fig (50)
2) I performed calculation sheet using Excel to tabulate the reactions and design the foundations of the structure. I selected the dimensions of the foundations to meet important requirement, i.e. the uniform settlement for the whole structure.
3) I performed complete analysis and design of three parts of the villa. These parts were:
· Reinforced concrete freestanding staircases had supported by the floor’s slabs only and semi-curved in space. It had extended from the basement to the roof, and located in the central core of the building.
· Reinforced concrete beams curved in plane, continuous and had carried cantilever balconies.
· Architectural reinforced concrete thin roof, which is a conical shell attached to three folded plates in both sides. It was stiffened all the way around by circumferential curved beams.
The reinforcement layouts of these parts were very complicated and I drew sketches by hand for the drafters. The designs were able to resist the complex combination of bending moments, shear forces, and torsion.
I used ACI-R.318, and Syrian Code of Practice. Also, I used textbooks was listed in different page.
