Simplified design for mechanical connections between precast concrete structural elements in buildings

This document refers to connections in precast frame systems, either for single-storey or multi-storey buildings. The connections for all orders of joints are considered. Large wall panel and three-dimensional cell systems are not considered.

According to the position in the overall construction and of the consequent different structural functions, the seven following orders of joints are considered:

a) mutual joints between floor or roof elements (floor-to-floor) that, in the seismic behaviour of the structural system, concern the diaphragm action of the floor;

b) joints between floor or roof elements and supporting beams (floor-to-beam) that give the peripheral constraints to the floor diaphragm in its seismic behaviour;

c) joints between beam and column (beam-to-column) that ensure in any direction the required degree of restraint in the frame system;

d) joints between column segments (column-to-column) used for multi-storey buildings usually for dual wall braced systems;

e) joints between column and foundation (column-to-foundation), able to ensure in any plane a fixed full support of the column;

f) fastenings of cladding panels to the structure (panel-to-structure) that