Multi-Tower

Smarter Modelling for Complex Buildings

Modern developments often feature a shared podium supporting two or more towers. In these Multi-Tower buildings, each tower can behave very differently under lateral loads dynamically due to variations in height, stiffness, and geometry. As a result, static Earthquake and Wind forces must be evaluated and distributed carefully for each tower and the podium structure.

The Challenge

Until now, the conventional workflow typically required:

• A master model for gravity and dynamic analysis.
• Multiple child models (for evaluating static Earthquake and Wind Loads).

This approach introduces several complications:

• Managing and maintaining multiple analytical models.
• Rebuilding child models whenever the master model changes.
• Manually rationalizing lateral forces at the shared podium and lower levels.
• Increased reliance on engineering judgment for overlapping floors.
• Limitations when podium levels are laterally flexible or when the analytical base is at foundation level.

The result is, Engineers spend more time coordinating models, and have more opportunities for inconsistency and errors.

A Unified Multi-Tower Solution

RCB’s Multi-Tower feature streamlines the entire process by enabling all calculations within a single master model.

The software automatically detects Multi-Tower geometry and guides users in defining Substructures that represent each tower and the shared podium. Once defined, the integrated Earthquake and Wind Calculators:

• Automatically generate lateral loads.
• Distribute loads level-by-level.
• Apply them directly to the appropriate substructures.

No duplicate models. No manual load reconciliation. No unnecessary rework.

Key Benefits

✔ Single Model Workflow
Eliminate the need to create and manage multiple separate models.

✔ Greater Accuracy and Reliability
More reliable prediction of forces in podium and lower floors where tower interactions occur.

✔ Automatic Load Distribution
Earthquake and Wind loads can be assigned automatically to each tower and podium.

✔ Remove Rework
Propagating modifications to child models is no longer necessary when the master model has been revised.

✔ Faster, More Efficient Analysis
Spend less time coordinating models and more time optimizing design.