Precast concrete construction system has its own characteristics which influence the layout span length construction depth and stability system to a great extent.
Precast concrete floor construction details.
The easi span floor system is a floating foundation that is post tensioned for added strength and durability.
The joints between the units are grouted with in situ concrete and a concrete structural topping is provided for some applications.
For the beams and double tees the capacities are somewhat independent of the available fire rating.
It provides flexibility during the installation process and requires minimal site.
The precast concrete floor unit is used to span between supporting steel beams as an alternative to in situ concrete and metal decking.
Architectural guide specification 396k doc.
Interface details window floor and roof adobe pdf file design resources.
In precast concrete construction majority of structural members are manufactured in manufacturing plants away from the construction site.
When you specify an easi span building with a floor it is an all concrete solution.
The material properties used are 6000 psi concrete in the precast element and either 250 ksi or 270 ksi prestressing strands.
The floor panel is comprised of a topping or deck supported by a number of parallel longitudinal concrete stems that extend along the length of the panel.
However for the spancrete hollowcore plank the fire endurance provided will have an effect on load capacity.
Here are some of the design and installation details of the precast concrete planks.