Basic and additional reinforcement - introduction

 

The SCIA Engineer program from version 16.1 allows users to define basic and additional provided reinforcement (in concrete setting or concrete member data), which can be taken into account for design of longitudinal and shear reinforcement for 1D members in service Concrete.

Terminology:

Statically required reinforcement A_s,stat – it is reinforcement designed by the program (reinforcement for N+My+Mz, longitudinal reinforcement designed for tensile force caused by shear and torsion)

Required reinforcement A_s,req – it is sum of statically required reinforcement and reinforcement designed according detailing provisions

Basic provided reinforcement A_s,bas,prov – it is predefined reinforcement by the user in Concrete setting or concrete member data. This reinforcement is constant at whole length of the member.

Additional provided reinforcement A_s,add,prov – it is predefined additional reinforcement by the user in Concrete setting or concrete member data and these reinforcement will be used only on parts of the member where basic reinforcement is not sufficient.

Additional required reinforcement A_s,add,req – it is reinforcement designed by the program, calculated as difference between required reinforcement and provided reinforcement

A_s,add,req = A_s,req - A_s,prov = A_s,req - A_s,bas,prov - A_s,add,prov

Provided reinforcement A_s,prov – it is reinforcement calculated as sum of basic provided and additional provided reinforcement A_s,prov = A_s,bas,prov + A_s,add,prov

Detailing reinforcement A_s,det - it is reinforcement added to corners of stirrups when basic reinforcement is not defined in sufficient amount or it is reinforcement added to edges where detailing for maximal spacing is not sufficient by basic and additional reinforcement.

For column with rectangular, circular and oval cross-section only basic reinforcement can be inputted