DESIGN AIDS FOR RECTANGULAR CROSS-SECTION BEAMS WITH STRAIGHT HAUNCHES: PART 1

This paper shows design aids for rectangular cross-section beams with straight haunches subjected to a uniformly distributed load to obtain the fixed-end moments factors, carry-over factors and stiffness factors, which is novelty of this research. The design aids are developed using the equations previously described by the writers in a companion paper. The simplifications made are as follows: the height of straight haunches on the left side and the right side are equal, because this is the most used by architectural forms (aesthetic) and the beam height in the central part is the 10% of beam length that is proposed by the code of the ACI to control deflections. The results of the considered problem are compared with the equations previously described by the writers in a companion paper, and these are the same with an approximation of three digits. Therefore, design aids provide a great tool for structural engineers by saving time.