Column and beam construction and method
US6920728B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Jan 6, 2003 |
| Grant date | Jul 26, 2005 |
| Priority date | — |
| Expiry date | Jan 6, 2023 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04C5/0645
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Site cast or pre-cast columns aligned and braced by pre-cast pre-stressed floor beams are used to erect a concrete skeleton structure for a building. The ends of the horizontal beams are imbedded in the columns at floor levels to stabilize and complete the skeleton. The horizontal beams are pre-stressed and are cast with passages that permit insertion of continuous reinforcing tendons into a network throughout each floor level. The tendons are subsequently post-tensioned so to tie the beams together and to the columns to reinforce the skeleton. Slab drop-forms starting at the roof and progressing floor-by-floor downward allow monolithic post-tensioned floor slabs to be cast to tie the skeleton into a unitary structure. The beams are usually integrated (buried) into each monolithic floor slab, keyed, doweled and bonded with bonding agent at cold joints to become a part of the slab structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.