Beams are horizontal structural components that support deck pieces like hollow core, planks and solid slabs, and sometimes other intermediate beams. Usually supported at both ends by column.
| Characteristic | Precast beam for building usually does not span too long, therefore the design can be limited to steel reinforced concrete without a need to prestress. Beams for civil engineering projects like bridges mostly require prestressing due to span and extensive loading due imposed load and self weight. |
| Typical sectional shape | The typical cross sectional shape various from square, rectangular, L-shape, T- shape or inverted Tee. |
| End profile | The profile of both ends are designed to suit to the way they are supported by column. |
| Length | Feasibly transportable length is the main concern. Not an issue to manufacture. |