A decorative concrete beam with a tubular section in the Figure MLM-1 shown below is simply supported on a span of 4.5 m. It has an outside diameter of 600 mm and an inside diameter of 300 mm. The unit weight of normal concrete mixture is 23.5 kN/m2. 300 mm 600 mm Figure MLM-1 01. ( ) Compute the cracking moment of the beam using NSCP 2015 if f = 26.3 MPa. A. 63.2 kN - m B. 149.1 kN - m C. 71.34 kN -m D. 142.74 kN –m 02. ) In addition to its own weight, what concentrated load (in kN/m) at midspan can the beam safely carry before it cracks? A. 44.97 kN B. 121.33 kN C. 52.21 kN D. 115.68 kN

A decorative concrete beam with a tubular section in the Figure MLM-1 shown below is simply supported on a span of 4.5 m. It has an outside diameter of 600 mm and an inside diameter of 300 mm. The unit weight of normal concrete mixture is 23.5 kN/m2. 300 mm 600 mm Figure MLM-1 01. ( ) Compute the cracking moment of the beam using NSCP 2015 if f = 26.3 MPa. A. 63.2 kN - m B. 149.1 kN - m C. 71.34 kN -m D. 142.74 kN –m 02. ) In addition to its own weight, what concentrated load (in kN/m) at midspan can the beam safely carry before it cracks? A. 44.97 kN B. 121.33 kN C. 52.21 kN D. 115.68 kN

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Design criteria for structural loading

The different loads such as loads due to self-weight (dead load) and external loads such as live load, wind loads, seismic load, snow load, and other loads and load combinations that influence the design of a building are called structural loading. The nature of the applied load differs from changes in the location, design, and type of materials used. The design criteria require that structures must be designed and constructed to be able to withstand all load types that are expected to act upon the structure and render its usage for the designated purpose. The structural members such as beams, slabs, columns, and foundations help the structure to withstand the applied load. There are different institutes such as ASCE and ACI that provide building design codes to assure minimum safety requirements and quality of the structures.

Question

A decorative concrete beam with a tubular section in the Figure MLM-1 shown below is simply
supported on a span of 4.5 m. It has an outside diameter of 600 mm and an inside diameter of
300 mm. The unit weight of normal concrete mixture is 23.5 kN/m.
300 mm
600 mm
Figure MLM-1
01. (
) Compute the cracking moment of the beam using NSCP 2015 if f = 26.3 MPa.
A. 63.2 kN - m
B. 149.1 kN -m
C. 71.34 kN -m
D. 142.74 kN-m
02.
) In addition to its own weight, what concentrated load (in kN/m) at midspan can the
beam safely carry before it cracks?
A. 44.97 kN
B. 121.33 kN
C. 52.21 kN
D. 115.68 kN
2 |Page
PRPC 324 - MIDTERM EXAMINATION
03. ( ) If the 300 mm Ø hollow core were replaced by a 300 mm hollow square section,
calculate the cracking moment.
A. 40.3 kN – m
B. 50.3 kN – m
C. 60.3 kN – m
D. 70.3 kN – m

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