Shoring
Three types of shoring are allowed in Eriksson Beam: None, Elevated, and Touch. Depending on the type of shoring, certain loads will be carried by the composite section instead of the non-composite section. If the shoring type is none, no changes are made, if the shoring type is touch, only topping weight is affected, and if the shoring type is elevated, all non composite loads are modified. In addition to defining the type of shoring, the user can also define the region of the beam the shoring is placed. Only loads placed above the shored region are modified. For example, you can have a cantilever member only be shored for the cantilever leaving the main span alone. This will result in only a portion of the loads to be shored, where the remainder will be on the non-composite section.
Feature | Elevated Shoring | Touch Shoring |
|---|---|---|
Definition | A broad category of temporary support systems for any elevated precast concrete element. | A specific technique where shores are installed to lightly contact precast members before casting a composite deck. |
Primary Purpose | To support the full weight of precast elements and construction loads until the structure is self-supporting. | To assist precast members in carrying the load of the wet concrete deck, thereby reducing stresses in the precast element. |
Timing of Installation | Installed before the precast elements are placed. | Installed after the precast elements are in their final position but before the composite deck is poured. |
Load Application | Designed to carry the full dead load of the precast elements and live loads from construction. | Initially carries no significant load; it engages as the precast member deflects under the load of the wet concrete. |
Typical Application | Used for the erection of entire elevated floor or roof systems, bridges, and other structures with precast components. | Primarily used in the construction of composite bridge decks and floor systems where a cast-in-place topping is added to precast beams or girders. |