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Confinement Bars. Confinement Bar Size and Area drop-down list and edit box. This is the specified size of confinement reinforcing steel for the section. Only one confinement bar size can be specified for a given concrete frame section property. Longitudinal Spacing of Confinement Bars (Along 1-Axis) edit box.
Confinement bars: permite modificar las propiedades del refuerzo de confinamiento – confinement bar size and área (diámetro del estribo) – Longitudinal spacing of confinement bars (separación entre estribo, definida por normas y el valor colocado debe hacer cumplir esas normas). fManual ETABS 2016 Edificio de Concreto Autor: Roberto ...
Minimum clear spacing between longitudinal bars. Minimum clear spacing between the longitudinal bars is given in ACI 318 Section 25.2 ( Figure 1 ). In the figure, db is the diameter of the longitudinal bars and dagg is the nominal maximum size of coarse aggregate in the mix.
Bars larger than No. 6 in size are not very practical for use as transverse reinforcement. Also, the ensemble of one hoop and crossties in two orthogonal directions has a thickness of 2¼ inches for No. 6 bar size, which translates into a 1¾-inch clear spacing for a 4-inch center-to-center spacing.
WORKED EXAMPLE: Consider the minimum development length required for the two terminated 28 mm diameter bottom bars in the beam shown below. Take f = 500 MPa; sy f’ = 32 MPa; c cover to the 28 mm bars c = 40 mm; and the clear spacing between the bottom bars a = 60 mm.
Additionally, the clear space between the transverse bars and lapped bars may not exceed 1.5 inches, and the transverse bars must be fully developed in grouted masonry at the point where they cross the lapped reinforcement.
Section 7.10.5.3 of ACI 318-08 requires lateral restraint for corner bars and at least every other longitudinal bar. The section also requires longitudinal bars without lateral restraint to be located no further than 6 in. (150 mm) clear from a restrained longitudinal bar, and Section 21.6.4.2 requires the horizontal spacing of hoop legs or ...
