Multi-Block School Campus Structural Design

Structural Analysis Requirements – School Campus Project

Project Overview

The project consists of a multi-block school campus with structural expansion joints separating the blocks. The buildings include:
- Block A & D: Each with 3 above-ground stories and staircase access to an underground playing field (B1 level).
- Block B: Contains 3 above-ground levels and a B1 level that opens to the playing field.
- Block C (Administration): 2 above-ground levels, and B1 & B2 levels open to the playing field. Contains both stairs and elevator.

General Requirements

1. Design Code Standards:
- Eurocode EN 1990-1998 (Structural design, loads, and seismic analysis).
- Lebanese Seismic Code (where applicable).
- ASCE 7-16 (used for verification and comparison).
- Use NF-EN 1992-1-1:2004/A1:2014/NA:2016 for reinforced concrete checks.

2. Modeling Tool:
- Autodesk Robot Structural Analysis Professional is the preferred software.
- All models must be shared in .rtd format with documentation and screenshots.

3. Seismic Design Parameters (to be verified with official Lebanese sources):
- Seismic Zone: South Lebanon (Hasbaya)
- Ground Type: Class C (medium-stiff soil)
- ag = 1.2 m/s² (subject to verification)
- Behavior Factor q: 3–4 (depends on system type)
- Importance Factor γI: 1.2 (school category)
- Analysis Method: Modal Response Spectrum Analysis with CQC combination method.
- Use accidental eccentricity = ±5% for both directions.

Modeling Requirements

1. Geometry:
- Model all floors, slabs, beams, columns, and walls accurately.
- Include expansion joints between blocks.
- Consider slab diaphragms (semi-rigid or rigid as per slab type: RC or post-tensioned).

2. Load Assumptions:
- Dead Load: 20 kN/m²
- Live Load: 4 kN/m²
- Snow Load: -1.5 kPa on roofs
- Wall loads as per thickness and material (30 cm masonry, 20 cm internal blocks).
- Include water tank and tile loads where applicable.

3. Load Combinations:
- ULS: 1.35 DL + 1.5 LL + EQ (per Eurocode)
- SLS (rare, frequent, quasi-permanent)
- Seismic combinations including ±X, ±Y, ±(X+Y)
- Include Newmark combinations if software-based dynamic modal analysis is applied.

Deliverables

1. Structural Model Files (.rtd)
2. Calculation Notes:
- Load cases and combinations
- Modal analysis
- Buckling and stability checks
- Foundation design assumptions
3. Summary Tables:
- Drift ratios
- Critical seismic coefficients
- Column and wall utilization ratios
- Reinforcement quantities per element
4. Drawings:
- Annotated model screenshots
- Plans showing column layout and wall locations
- Reinforcement proposals including detailed execution drawings for beams, columns, slabs, and walls in AutoCAD format.


Special Notes

- Do not tie all reinforcement bars together by default in modeling (reflect actual construction intent).
- Consider local construction practices in South Lebanon and adapt detailing accordingly.
- Take into account the interaction between different block foundations (especially where B2 exists adjacent to B1).


link to access the DWG files.
https://drive.google.com/drive/folders/1wIn0NV8oWnUaMeturA5NcIhtZD_upUZx?usp=sharing