two span beam subjected to shear and flexure only is reinforced as follows: SECTION @ MIDSPAN @ FACE OF SUPPORTS TOP BARS 2-16 mm diameters 5-16 mm diameters BOTTOM BARS 3-16 mm diameters 2-16 mm diameters Given: Stirrup diameter = 10 mm Concrete f'c = 21 MPa

two span beam subjected to shear and flexure only is reinforced as follows: SECTION @ MIDSPAN @ FACE OF SUPPORTS TOP BARS 2-16 mm diameters 5-16 mm diameters BOTTOM BARS 3-16 mm diameters 2-16 mm diameters Given: Stirrup diameter = 10 mm Concrete f'c = 21 MPa

Steel Design (Activate Learning with these NEW titles from Engineering!)

6th Edition

ISBN:9781337094740

Author:Segui, William T.

Publisher:Segui, William T.

Chapter9: Composite Construction

Section: Chapter Questions

Problem 9.8.8P

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Question

A two span beam subjected to shear and flexure only is reinforced as follows:

SECTION	@ MIDSPAN	@ FACE OF SUPPORTS
TOP BARS	2-16 mm diameters	5-16 mm diameters
BOTTOM BARS	3-16 mm diameters	2-16 mm diameters

Given:

Stirrup diameter = 10 mm

Concrete f'c = 21 MPa

Steel rebar fy = 415 MPa

Stirrup fy = 275 MPa

Beam size b x h = 250 mm x 450 mm

Assume all bars laid out in single layer.

Calculate the following:

Tensile steel ratio in positive bending at midspan
Design Moment Strength of section at midspan for positive bending in kN-m
Nominal Moment Strength of section at face of support for negative bending in kN-m

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