Situation 1 Given the following data of a rectangular beam: beam width, b=250 mm; effective depth, d=450mm simple span, L=8m Service loads: Dead load = 28 kN/m (including beam weight) Live load = 35 kN/m Stirrups (transverse reinforcement) Diameter 10mm Yield strength, fyh=275 MPa Concrete strength, fc' =21 MPa 1. Determine the maximum spacing (mm) of stirrups required near the support using 3 legs of stirrups. 2. Determine the maximum spacing (mm) of stirrups required at 0.2L from support using legs of stirrups. 3. Determine the maximum spacing (mm) of stirrups required at 0.35L from support using 2 legs of stirrups. 4. Determine the minimum area of shear reinforcement at 0.45L from support.

Situation 1 Given the following data of a rectangular beam: beam width, b=250 mm; effective depth, d=450mm simple span, L=8m Service loads: Dead load = 28 kN/m (including beam weight) Live load = 35 kN/m Stirrups (transverse reinforcement) Diameter 10mm Yield strength, fyh=275 MPa Concrete strength, fc' =21 MPa 1. Determine the maximum spacing (mm) of stirrups required near the support using 3 legs of stirrups. 2. Determine the maximum spacing (mm) of stirrups required at 0.2L from support using legs of stirrups. 3. Determine the maximum spacing (mm) of stirrups required at 0.35L from support using 2 legs of stirrups. 4. Determine the minimum area of shear reinforcement at 0.45L from support.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

A simply supported bear with span of L = 5.4 m must be designed to support a uniformly distributed total dead load of 15 kN/m and live load of 9 kN/m. Using material strengths fc = 21 MPa and fy = 420 MPa, consider b=0.55d,calculate the required effective depth in mm if the tensile steel strain compatible with concrete strain of 0.003 is set at 0.013. Express your answer in two decimal places.
A rectangular beam has a width of 280 mm and an effective depth of 500 mm. It has a reinforcement area of 4072 sq. mm at the bottom. fc' = 25 MPa, fy = 414 MPa. c) Determine the value of "Mu"
A floor systtem consist of a 75 mm concrete slab supported by continuous T beams with a span of 4.3 m spaced at 3 m on center. The beams have a web width, bw and effective depth, d. Calculate the necessary reinforcement for a typical interior beam if the applied factored load is 574 kN-m. Solve the following given a. ) bw = 400 mm; d = 500 mm; fy = 420 MPa; fc' = 28 MPa b. ) bw = 350 mm; d = 470 mm; fy = 420 MPa; fc' = 21 MPa
A rectangular beam has a width of 280 mm and an effective depth of 500 mm. It has a reinforcement area of 4072 sq. mm at the bottom. fc' = 25 MPa, fy = 414 MPa. a) Determine the depth of compression block, "a".
PROBLEM 2: A reinforced concrete beam has a simple span of 7m. It carries a uniformly distributed dead load (including its own weight) of 9kN/m, live load equal to 18kN/m . The beam is reinforced with 3D28mm bars and has a width of 250mm and an effective depth of 450mm. fc’=28Mpa and fy=345Mpa. Using the simplified calculation for Vc, what is the nominal shear capacity of concrete? At what section of the beam is the web reinforcement theoretically not required? At what section of the beam is the web reinforcement no longer required according to the NSCP? Draw the design details for shear of the beam from x=3m to x=3.5m.
A T‐beam has the following properties:Flange width, bf = 820 mmFlange thickness, t = 100 mm Width of web, bw= 250 mmEffective depth, d = 470 mm concrete strength f’c = 20.7 MPa steel strength, fy = 414 MPaDetermine the required tension steel area for the following conditions:A) MDL = 150 kN.m, MLL = 120 kN.mB) MDL = 175 kN.m, MLL = 190 kN.m
The span of single reinforced rectangular beam whose dimensions are given below for cross section, Cover value will be taken as 35 mm. C25/30 – S420 a)Neutral axis depth (c) and equivalent pressure block depth (a) calculate. b)By calculating the area of tensile reinforcement to be used and the percentage of reinforcement Make the necessary investigations. c)Calculate the moment of bearing power.
A square tied column carries an axial dead load of580 kN and an axial live load of 850 kN. Assume f’c = 28 MPa andfy = 275 MPa. Use 28 mm diameter bars.Using reinforcement ratio of 2.2%, what is the minimum required dimension of the column rounded to the nearest mm?What is the required number of 25 mm diameter bars?What is the required spacing of 12 mm lateral ties?
Determine the maximum uniform live load (distributed throughout the beam) that the simply supportedbeam can carry with the following details: Beam breadth = 310 mm,Beam depth = 540 mm, Tension reinforcement = 6 – 25 mm diameter with fy = 420 MPa, Compression reinforcement = 2 – 25mm diameter with fy = 420 MPa, Specified compressive strength = 20.7 MPa, Clear cover = 40 mm,Transverse reinforcement = 10mm diameter, Factored concentrated load applied at midspan (planted column) = 100 kN, Beam span = 6.5 meters give step by step
Using the alternate design method, design (the dimension) of a 4m simply supported rectangular beam for flexure, when it will be subjected to a 25 kN/m dead load, excluding its own weight, and a live load of 30 kN/m, under the following conditions: concrete unit weight, Yc = 23.5 kN/m^3fc' = 28 MPafy = 420 MPaIf db = 32 mm is used, how many bars are needed for its reinforcement?
Let b = 300mm, h = 520mm and factored shear load carried by the beam to be 240kN Provide an answer to the following questions below: a) Is it necessary to add shear reinforcement for the above-mentioned beam? If this is the case, is it necessary to provide a value larger than the minimum set by NSCP 2015? b) What are the values of the maximum spacing stirrup taken from the Av and from the required smax directly from the code?
A continuous concrete beam shown in the figure has a width of b= 300 mm, an effective depth of d= 560 mm, and an overall depth of h= 600 mm. Concrete compressive strength fIc=21.0 MPa and steel yield strength fy= 275 MPa. The beam carries a superimposed dead load at span AB of 7.5 kN/m and at span BC, CD of 4.5 kN/m. A live load at span AB of 12.5 kN /m and at span BC, CD of 10.5 kN/m. Determine the factored moments between spans AB and BC for design.