A 235 mm x 438 mm prestressed beamhas a simple span of 6 m. The beam usesstress relieved tendons with specifiedtensile strength fpu = 1,368 MPa and aneffective stress in prestressedreinforcement after allowable for allprestress losses fse = 750 MPa. Theprestressed beam is not to be groutedafter the application of the the prestress.If the area of prestress reinforcement inthe tension zone is Aps = 1,140 mm2applied 49 mm above the bottom of thebeam and fe' = 31.8 MPa, determine thenominal moment of the beam.

Answered: Image /qna-images/answer/27145a5c-de35-42b8-b4a4-87892800438f.jpg

Answered: A 235 mm x 438 mm prestressed beam

Engineering

Civil Engineering

A 235 mm x 438 mm prestressed beam

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 9.1.3P

See similar textbooks

Related questions

Q: A 4-hour unit hydrograph of a drainage basin is triangular in form with a height of 50 m³/sec and a ...

Q: An 8m beam is support at the left end by a hinge and a roller 6m from the the hinge. The beam suppor...

A: Simply supported beam with varying load is given in the problem Uniform Varying Load with 10kn-m lo...

Q: 1. The prestressed beam is pre tensioned by a bonded prestress tendon having an area Aps = 650 mm?. ...

A: Part a Stress in prestressing reinforcement at nominal length= fps=fpu1-γpβ1ρpfpufc'=1728(1-0.40.80....

Q: loaded cantilever beam are given as 18 mm and 0-01 radian, respectively. The deflection and slope of...

Q: By the Asphalt Institute method, determine the allowable ESAL for a 3.5-inch overlay on an asphalt p...

A: Given, Rebound deflection (δr) = 0.075 in

Q: Structural Theory subject What is the value of EI in three-monent equation in beams?

Q: Problem 1. Determine the range of weights W that can be applied without causing motion of the 100-lb...

Q: An open tank 3.2m wide by 4.7m long is filled to a depth of 5.7 m with a liquid whose specific gravi...

A: Determination of ABSOLUTE pressure at bottom of tank

Q: Problem 4. An irrigation system consists of 5 parallel triangular-shaped swales (Fig. 4). The earthe...

A: No of swales =5 Bed slope =1/200 (ft/ft) water depth = 2 ft height of swales =1 m=3.28ft angle =45 d...

Q: A metal body floats at the interface of water and oil (sp, gr = 0,85) such that 35% of its volume is...

Q: 5 The suction side of a pipe system is as shown in Fig. P15.55. The pump discharges 495 gpm of water...

Q: Calculate the moment of 200 N force on the handle of wrench about the * center of the bolt 200 N 20 ...

Q: The 9-lb block has a velocity of 6.72 ft/s when the force of F = (257.6t2) Ib-ft/sec2 is applied. De...

A: Determine the velocity of the block when t = 2.40s

Q: A flow is described by the stream function y = 3/2xy . Locate the %3D point at which the velocity ve...

Q: Problem 11 A tube 3mm thick has the square cross section of 100mm on one side. Determine the shearin...

Q: Pipes 1, 2 and 3 are 300 m., 150 and 250 m. long and 25 cm. 12 cm. and 20 cm. diameter with friction...

Q: A cantilever of uniform section is 3 m long. It is rigidly fixed at one end and is propped to the sa...

Q: A jet of water having area = 10 cm2 and velocity = 50 m/s striking a vertical plate at the centre wh...

Q: INTERNAL DIAMETER TORQ 9 kip.ir 1.35 kl SET A 0.9 inch 12 mm 2 inches 3,000 mine the maximum shearin...

Q: The probability of T=50 year to occur within the next 70 years is? The probability of T=50 year not ...

Q: If a triangular gate of height 3,742 mm and base of 3,568 mm is vertical and submerged in water wher...

Q: Q/find the maximum distance between the well and separator if the wellhead pressure 280 psi and sepa...

Q: Find the head on the weir in meters. a. 0.81

A: This question is taken from fluid mechanics subject and the explanation is given below:

Q: Design a one way slab based on the figure shown below. The slab has a superimposed dead load 2.8 kPa...

A: The one-way slab is a slab that is supported by beams on the two opposite sides to carry the load in...

Q: Problem 2. A rectangular beam has b = 300mm and d-490mm. Concrete compressive strength fc=27.6MPA. C...

A: Assume Fy = 420MPa

Q: The steel rod is stress-free before the axial loads P1 =169 kN and P2 = 88 kN are applied to the rod...

A: calculate the axial force in each segment after the loads are applied.

Q: W.S.V

Q: Calculate the pin reactions at each of the pins in the frame shown. 100 N C 250 N 2 m B В D 2 m E -1...

Q: 2. The beam shown is prestressed using a bonded (stress relieved tendons) with a specified tensile s...

A: Considering the free body diagram:

Q: The signboard truss is designed to support a horizontal wind load of 610 lb. If the resultant of thi...

Q: The bin is 2 m wide and is filled with oil to the depth shown. Determine the resultant force acting ...

Q: 3. Consider the drawing below. a. Find I, b. Find Ix 15 10

A: y = 3*x0.5 y= 3/5*x

Q: Two tangents converge at an angle 27.8 degrees, which were connected by a reverse curve. The directi...

A: Given data, Two tangent coverage = 27.8° Shortest distance of PRC = 126.64 m Bearing of common tang...

Q: Determine the forces in members BE and CE of the loaded truss. The forces are positive if in tension...

Q: The length, coefficient of thermal expansion and Youngs modulus of bar A are twice of bar B. If the ...

Q: The coefficient of permeability of a soil sample was found out in a soil mechanics laboratory by mak...

A: L=15cm To find coefficient of permeability

Q: Show that the maximum deformation produced will be twice that if the same weight 1417. A weight is d...

Q: A symmetrical wide flange beam made to carry transverse loads parallel to its web. At which section ...

Q: 3. Obtain the gage pressure at the center A of the pipe shown. Ignore surface tension effects. Given...

Q: Problem 24: Five racing cars are travelling on a 2.5 mi track. An observer is standing at a point on...

Q: A very large and open reservoir feeds into a norizontally laid pipe which discharges into the atmosp...

Q: The 10-kg block A rests on the 50-kg plate B in the position shown. Neglecting the mass of the rope ...

A: For the given block,

Q: The loaded scow has a draft of 1.8 m in fresh water when in upright position. The scow is 6m wide an...

Q: Find the angle a. 9.3' B 3.1' 455 lb 59 Answer:a =

Q: Given a most probable value of 54.235 meters, which of the following residuals belongs to the most a...

A: for given value of 54.234m here -.09 feet has the smallest value and its error in .09 ft least. so m...

Q: 4. Using any method, (thru equations, or area method), draw the shear and moment diagram of the foll...

Q: 80 kN 60 kN -10 kN/m 40 kN LA 2 m m. 3 m 3 m 2 m1 m

Q: Calculate the conjugate depth for a hydraulic jump in a rectangular channel considering an upstream ...

A: upstream depth: y1 = 0.7m Froude number: Fr = 5 To Calculate: Conjugate depth of Hydraulic Jump, y2 ...

Q: 2. In the hanger shown, the upper portion of link ABC is 3/8 in. thick, and the lower portions are e...

Q: Outlet flow where q = flow rate, cfm, and h = level above the valve, ft. Calculate the time constant...

A: We have to determine th transfer function H and if the flow to the tank increase from 2 to 2.2 cfm a...

Concept explainers

Braced cuts

The braced cut is a method of providing lateral support to the soil in foundation trenches, to prevent the trenches from deformation by the caving in of soil and resisting it from moving laterally. During shallow excavation in firm soil, generally, slopes are provided to resist the caving in of soil. During shallow excavation in soft soil and deep excavation, the chances of caving in of soil increase. Hence, it becomes necessary to make a provision to resist the deformation of trenches due to caving in of soil. The braced cut is the method used for such conditions. The excavation using braced cuts is a bit uneconomical as compared to the traditional open-cut excavation method but provides better safety than the cut excavation method.

Question

A 235 mm x 438 mm prestressed beam
has a simple span of 6 m. The beam uses
stress relieved tendons with specified
tensile strength fpu = 1,368 MPa and an
effective stress in prestressed
reinforcement after allowable for all
prestress losses fse = 750 MPa. The
prestressed beam is not to be grouted
after the application of the the prestress.
If the area of prestress reinforcement in
the tension zone is Aps = 1,140 mm2
applied 49 mm above the bottom of the
beam and fe' = 31.8 MPa, determine the
nominal moment of the beam.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.

Similar questions

find the max. compression and tension flexural stress 10 kN 20 kN -0.2 m 0.2 m- -0.2 m A D= 50 mm D B c LA A FRA RC Section A-A
3G “. Asiacell %99 Home Work... adhomShupper H.W. 1: 4.3 m Two axial members are used to support a load P applied at joint B. • Member (1) has a cross-sectional area of A = 3,080 mm2 and an allowabl normal stress of 180 MPa. • Member (2) has a cross-sectional area of Az = 4,650 mm2 and an allowable normal stress of 75 MPa. Determine the maximum load P that may be supported without exceeding either allowable normal stress. 5.0 m 2.0 m
A 350mm x 600mm prestressed beam has a simple span of 20m. Thebeam uses stress relieved tendons with specified tensile strength f pu =1862 MPa and an effective stress in prestressed reinforcement afterallowance for all prestress losses f se = 1100 MPa. The area of prestressreinforcement in tension zone is A ps = 1800mm 2 applied 90mm abovethe bottom of the beam and fc’ = 35 MPa.a. Determine the reinforcement indices for the prestressed beam ifit is not to be grouted (unbonded) after the application of theprestress.b. Determine the reinforcement indices for the prestressed beam ifit uses bonded tendons.c. The safe ultimate moment capacity of the beamd. The safe live load that the prestress beam could carry.
A rectangular cantilever beam has a width of 300mm and an effective depth of 480mm. It is reinforced with 7-25mm bars. The beam is carrying a uniformly distributed dead load of 15kN/m. The compressive strength of the concrete is 21MPa and the yield strength of the steel is 415MPa. The magnitude of the Ultimate moment capacity is Blank 1kN.m.
A prestressed beam has a width of 300 mm and depth of 600 mm. It is subjected to a bonded prestress tendon having an area of 590 mm2 acting at a distance 550 mm from the compression, face of the member. fc' = 34.6 MPa, fpu = 1860 MPa, fpy = 0.85fpu (stress-relived strands). COMPUTE THE DEPTH OF THE COMPRESSION BLOCK (mm)
A single span beam which carries a uniform load of 30kN/m has an unsupported span of 5m. It is made up of yakal 150mm x 300mm wooden section. It is subjected to a compressive load of 300kN at its centroid. Allowable stresses of Yakal using 80% stress grade: Bending and tension parallel to the grain -24.5Mpa Modulus of Elasticity in Bending =9780Mpa Compression parallel to the grain -15.8Mpa Compression perpendicular to the grain =6.27Mpa Shear parallel to the grain -2.49Mpa The beam is fixed at both ends What is the ratio of combined stresses and indicate if the beam is safe, unsafe.
P2 - A rectangular beam has a design moment of 40 kNm. The material has a 200 MPa yield strength. Create a section with a width-to-depth ratio of 0.5 using the elastic and plastic theories, respectively.
13 NSCP 2015 Pn = FerAg (505.3-1) The flexural buckling stress, Fer, is determined as follows: KL 1. when r 1.71 (or F, 2 0.44F,) (or F. 2 0.44F,) Fy Fr = 0. Fy (505.3-2) KL E > 4.71 Fy ( or F. < 0.44F,) 2. when r Fer = 0.877F. (505.3-3) where F.= elastic critical buckling stress determined according to Eq. 505.3-4, Section 505.4, or the provisions of Section 503.2, as applicable, MPa. F = KL (505.3-4) A W12x79 of A573 Grade 60 (Fy = 415 MPa) steel is used as a compression member. It is 7 m long, fixed at the top and bottom, and has additional support in the weak direction 3 m from the top. Properties of the section are: A = 14,500 mm2 , I = 258.6 x 10° mm“, Iy = 84.375 x 10° mmª 1. Calculate the critical slenderness ratio of the member. А. 26.208 C. 36.706 B. 45.882 D. 27.529 2. Calculate the nominal axial load capacity of the column. B. 4 851 kN A. 3 104 kN C. 4 213 kN D.5 344 kN 3. Calculate the service axial dead load if the service axial live load is twice as that of the dead…
At which point on the design P-M interaction diagram is the design flexural strength largest? O Pure compression Pure tension Balanced failure point (CCL limit) O TCL limit Beam condition (Pn = 0) %3D //img00.zhaopin.cm
Determine the largest permissible value of P for the beam and loading shown, knowing that the allowable normal stress is +80 MPa in tension and -115 MPa in compression. 0.2 m B 0.4 m. 0.2 m D 12 mm H 96 mm The largest permissible value of P is 48 mm 12 mm kN.
The prestress T-beam section has a simple span of 6 m. The tendons is subjected to an initial stress of 900 MPa with an area of 800 mm?. Assuming a loss of stress of 18%, no tension will be acting at the bottom and a maximum stress of 9.5 MPa at the top should not еxceeded. -450- 100 800 |100 150- Determine the stress at the top due to the final prestressing force alone. (MPa)
Determine the location of neutral axis from the extreme compression fiber.