| Evaluation Criteria | Peb Building | Concrete Building |
|---|
| Fabrication | Precise fabrication: Members fabricated in a controlled environment and up to 50% saving in fabrication time on site. | Fabrication done on site; Requires building the reinforcement cage and shuttering work prior to pouring. |
| Delivery and Logistics | Can be delivered in desired sequence anywhere in the world. | Might have to build batch plant on site if site is secluded or huge. |
| Installation Time | 50% saving in construction time. Fast Installation with no idle time. | Slow and time consuming: The contractor will have to wait for the previous cast to harden (14-28 days) before being able to cast next batch. |
| Quality | Quality of steel is guaranteed because- It is a homogeneous product.
- Pieces are tailored according to shop drawings.
- Precise machinery is used for fabrication.
- It is fabricated under shop control.
- Quality is not affected by weather conditions
| Many factors lead to quality deterioration- Concrete is not a homogeneous product.
- Concrete mix ingredient ratios are difficult to maintain.
- Quality of water used may vary.
- Weather conditions.
- Labor experience in pouring.
- Adequate use of vibrators.
- Using proper curing methods.
- Concrete shrinkage.
- High manpower count may weaken control.
|
| Cost | Savings of 10%-15% for large span steel building. | Construction cost is high at site. |
| Industrial Applications | Saving on maintenance cost: Can easily handle equipment such as multiple cranes within building. Sways can be controlled. Precision can be achieved during installation. | Heavy equipment usage such as cranes is limited. |
| Commercial & Infrastructure Applications | Better aesthetics and longer spans can be achieved using steel as building component. | Limited designs are possible with concrete. |
