Department of Architecture
ENAR 335
BUILDING CONSTRUCTION 3
PRECAST SKELETON CONSTRUCTION SYSTEM
Done By: Dina Khouri 1090999 Islam Hijazi 1080984 Marian Shomali 1090213
Instructed by: Dr. Mohammad Abd-al-hadi
Date:
Precast Concrete
Every construction material and system has its own characteristics which to a greater or lesser extend influence the layout, span length, construction depth, stability system, etc. This is also the case for precast concrete, not only in comparison to steel, wood and masonry structures, but also with respect to cast in-situ concrete. Theoretically, all joints between the precast units could be made in such a way that the completed precast structure has the same monolithic concept as a cast in-situ one. However, this is a wrong approach and one, which is very labour intensive and costly. If the full advantages of precast concrete are to be realised, the structure should be conceived according to its specific design philosophy: long spans, appropriate stability concept, simple details, etc. Designers should from the very outset of the project consider the possibilities, restrictions and advantages of precast concrete, its detailing, manufacture, transport, erection and serviceability stages before completing a design in precast concrete
skeletal systems
Portal frame and skeletal systems consist of linear elements (beams, columns) of different shapes and sizes, combined to form the skeleton of a building. They are very suitable for buildings, which need a high degree of flexibility. This is mainly because of the possibility to use large spans and to achieve open spaces without interfering walls. There are two basic types:
The portal frame, consisting of columns and roof beams, and used for single-storey retail warehousing and industrial manufacturing facilities.
The skeletal structure, consisting of columns, beams and slabs for low to