The flooring of a warehouse is made up of double – tee joints as shown in Figure-1. The jointsare simply – supported on a span of 8 m and are pre – tensioned with one tendon in each stemwith an initial jacking force of 750 kN each, located 75 mm above the bottom fiber, loss ofprestress at service loads is 20%. The properties of the section are as follows:Total Area = 220,000 mm1 = 1,890 × 10° mm*DL = 2.5 kPaLL = 6 kPayc = 24 kN/mx = 2.5 my: = 90 mmy: = 270 mmya = 75 mmy1N.A.y2УзFigure-11. Determine the initial stress at the bottom fibers due to prestressing force alone.2. Determine the stress at the bottom fiber due to service load and prestressing force.3. Calculate the additional load the floor can carry so that the stress at the bottom fibers at themidspan is zero.

Answered: Image /qna-images/answer/0b5a3e02-d00a-4696-ba0f-d20a0a07bf02.jpg

1. Determine the initial stress at the bottom fibers due to prestressing force alone. 2. Determine the stress at the bottom fiber due to service load and prestressing force. 3. Calculate the additional load the floor can carry so that the stress at the bottom fibers at ti midspan is zero.

1. Determine the initial stress at the bottom fibers due to prestressing force alone. 2. Determine the stress at the bottom fiber due to service load and prestressing force. 3. Calculate the additional load the floor can carry so that the stress at the bottom fibers at ti midspan is zero.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Q: b) The peak hour factor is 0.65 and the volume of traffic is 0.75 vehicle per sec. What is the highe...

A: Peak hour factor is the relationship between full hourly volume and peak 15 min flow rate.

Q: What is the balanced steel reinforcement (mm²) of the beam if it has a specified compressive strengt...

Q: rou are considering buying a piece of industrial equipment to automate a part of your production pro...

Q: A soil sample taken from a field contains a volume of 110 cm3 , weighs 220 grams when taken, and 165...

Q: Water flows over a spillway of a dam from a depth of 8 m upstream the spillway to a depth of 1.5 m d...

Q: A soil has a porosity of 40%, the G-2.5 and water content of 12%. 14. Water content at full saturati...

A: Introduction : The given question is related with geotechnical engineering . In this question we are...

Q: complete solution

A: Given data- Compressive strength (fy)= 21.9 Mpa Steel yield strength (fs) = 326Mpa Width(b) = 256mm ...

Q: 1. a) Draw the free body diagram for member AB. b) Determine the reaction forces and/or reaction mom...

A: Given that -

Q: ump water from a source with a confining unit height of 30 meters. Two observation wells are 200 met...

A: Using relationQ=2πKbs1-s2lnr2r1432,000×10-3m3day=2πK30m9-3ln1500200K=0.76963md

Q: Gage Number Precipitation Depth (in) -1.86 1.23 0.02 4 0.86 23

Q: Two parallel tangents 10 m apart are connected by a reversed curve. The chord length from the PC to ...

Q: A involves the determination of the value of a specified variable that will make the revenues exactl...

A: A multiple choice questions is given and it has been asked to choose appropriate option. Please refe...

Q: 6-23 The T-beam is subjected to the loading shown. Draw the shear diagram for the beam. 2 kip 100 lb...

Q: ?Determine the reaction at points A and C. Member BC is pin-connected at both ends. (Partial ans. Ax...

Q: Ordinal Data

A: Ordinal data is used to carry out surveys or questionnaires due to its “ordered” nature. Statistical...

Q: What is the maximum area of reinforcements (mm-) of the concrete beam if the specified compressive s...

A: Given, f'c = 22.8 MPa fy = 287 MPa b = 286 mm d = 596 mm

Q: The tangent from P.C of a simple curve has a bearing of N 65deg E while the tangent from P.T has a b...

Q: Kakulate the strength of a discontinvous strut of length 3.2 m. The strut <onsists of two unequal an...

Q: 1.0 What weight Wc is necessary to start the system of blocks shown if the blocks slow moving at con...

Q: The excess between the selling price and total variable costs is known as? Constant Cost First Cost ...

A: Contribution Margin is the correct answer.

Q: An electronic balance costs P90, 000 and has an estimated salvage value of P10, 000 at the end of it...

A: step 1-

Q: >10KN 4m A - 3m - 3m Using Virtual Work: Compute for the vertical component of the deflection at B a...

Q: Answer the ff: a) The effective stress right above the depth of 20 meters from the ground surface is...

A: solution From zone A to B the dry unit weight of sand γdry1=γwG1+e=9.81×2.671+0.45=18.064 KNm3From z...

Q: en cable carrying com of the cable if it's ca

Q: Determine the stresses for each segment when the temperature of the rigid bar is -45 degrees celsius...

A: Given: E = 85 GPa ΔT = (-45-24) = -(45+24) = -69°c Required Stresses in each segment

Q: In fig. if the datum line taken at point * 1, then Control volume boundary 1-2 21 2 m 200 mm diam 1....

A: According to fig: Datum line taken at point 1 than Z1=0, Z2= 2 m and Z3= - 1.5 m

Q: The figure below shows two flow lines for seepage across an interface between two soil media of diff...

Q: A horizontal curve has a maximum speed of 50 mph. If e = 0.10, and f = 0.16, find the degree of the ...

A: This question is related to the Horizontal curve from Highway Engineering.

Q: A soil sample taken from a field contains a volume of 110 cm3 , weighs 220 grams when taken, and 165...

A: We will apply basic formulas.

Q: calculate Q for transverse shear stress. the rectangle cross-section is hollow with dimensions given...

A: Area Above the Neutral axis = 0.5 (6.5x3.5-6x3) =2.375 in2

Q: 97. A helical spring is subjected to an axial load W and corresponding deflection in the spring is 8...

A: Given, A helical spring is subjected to an axial load W With corresponding deflection δ1=δ Initial m...

Q: i) The total stress at the depth of 30 meters from the ground surface is: j) The neutral stress dire...

Q: determine the required diameter of the steel and aluminum rods.

A: Torque: - It is type of force which produces rotational motion in a body. Also called as rotational ...

Q: Read the question carefully and give me right solution with clear calculations. the minimum superele...

Q: Determine the velocity and pressure at sections 2 and 3 if the water flows steadily through the pipe...

Q: A single jet impulse turbine of 10 MW capacity works with a head of 500 m. If the specific speed of ...

A: Given A single jet impulse turbine with, Power rating = 10 MW Head length, H = 500 m Specific speed ...

Q: Determine the force in members DC, HC, and HI of the truss and whether it is in tension or compressi...

Q: tation 0 + 210 with center height of 1.4 m in fill, the ground lines makes a uniform slope of 5% to ...

Q: A man running a foot race rounds a flat curve of 15-m radius. If he runs at the rate of 24kph, deter...

A: As the runner will negotiate the curve. The centrifugal force will act on the runner which will tend...

Q: A 200 meter parabolic curve has a grade of -4% and +6%. The two grades intersect at 5+600 with eleva...

A: G1 = -4% G2 = 6% l = 200m

Q: Mr. Santos borrowed P30,000.00 two years ago. The terms of the loan are 8% interest for 8 years with...

Q: A column 385mm x 320mm, is reinforced with 6-28mm bar, three bars distributed equally in short dimen...

Q: Springs AB and CD have a stiffness of kAB = 8 lb/in and kçp = 4 lb/in, respectively, and both spring...

Q: In a test to determine the three orifice coefficients under constant head of water of 1.8 m, it was ...

Q: An excavation was made in saturated, soft clay (øu=0), with its sides vertical. When the depth of ex...

Q: If the concentration of Na, Ca and Mg in a water sample are 345, 60 and 18 mg/l, respectively, then ...

Q: 34. Write the Rouse's equation for distribution of suspended sediment in the vertical of a channel a...

Q: A soil sample taken from a field contains a volume of 110 cm3 , weighs 220 grams when taken, and 165...

A: As per the guideline of Bartleby, we are supposed to solve only the first three sub-questions.

Q: Water from the reservoir flows through the 150-m long, 50-mm diameter pipe into the turbine at B. If...

Q: 5. Determine the velocity and pressure at sections 2 and 3 if the water flows steadily through the p...

A: Given that -

Concept explainers

Bars

In civil engineering, bars refer to steel reinforcement bars or rebars. These are structural members primarily used for reinforcement purposes in masonry works. A bar is characterized by its cross-sectional area, which is negligible compared to its length. Bars are usually manufactured by steel which is uniform throughout the length, or by meshing multiple steel wires. Other materials of the bar include carbon steel, glass fiber, carbon fiber, and basalt fiber. The reinforcing bars are coated with epoxy resins and other materials to enhance some of their properties including corrosion resistance.

Question

The flooring of a warehouse is made up of double – tee joints as shown in Figure-1. The joints
are simply – supported on a span of 8 m and are pre – tensioned with one tendon in each stem
with an initial jacking force of 750 kN each, located 75 mm above the bottom fiber, loss of
prestress at service loads is 20%. The properties of the section are as follows:
Total Area = 220,000 mm
1 = 1,890 × 10° mm*
DL = 2.5 kPa
LL = 6 kPa
yc = 24 kN/m
x = 2.5 m
y: = 90 mm
y: = 270 mm
ya = 75 mm
y1
N.A.
y2
Уз
Figure-1
1. Determine the initial stress at the bottom fibers due to prestressing force alone.
2. Determine the stress at the bottom fiber due to service load and prestressing force.
3. Calculate the additional load the floor can carry so that the stress at the bottom fibers at the
midspan is zero.

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

The end chord of a timber truss is framed into the bottom chord as shown in the figure. Neglecting friction, compute dimension b (in mm) if the allowable shearing stress is 880,000 Pa. (round-up your answer to a nearest whole number that is divisible by 5, no need for unit)
4. The rectangular piece of wood ,50mm by 100mm is used as a compression block. The grain of the wood makes a 20 degrees angle with the horizontal , as shown in the figure . Determine the largest axial force P that can be applied safely if the allowable stresses on the plane of the grain are 18MPa for compression and 4MPa for shear.
2. A timber column, 200 mm x 200 mm in cross section, is reinforced on each side by a steel plate 200 mm and t mm thick. Determine the thickness t so that the column will support an axial load of 1350 kN without exceeding a maximum timber stress of 8.30 MPa or a maximum steel stress of 137.90 MPa. The moduli of elasticity are 10.34 GPa for timber and 200 GPa for steel.
The main beam of UB 610 x 229 x 101 kg/m in steel grade S275 supportssecondary beamsof UB 406 x 140 x 39 kg/mon its top flange.The schematic diagram of the floor supported by the beams is presented in Figure 1. b)The slab floor is reinforced concrete 150 mm thickwith 50 mm screed on top of it. The slab floor carriesthe uniform distributed load of 400 kg/m2.Calculate the ULS load on the secondary beam. 4xxx= 4715 1xxx= 1715 50xx= 5015
(b ) . A 200 mm wide x 300 mm deep timber beam is reinforced by steel plates 200 mm wide x 12 mm deep on the top and bottom surfaces as shown in Fig.1. If the maximum allowable stresses for the steel and timber are 120 MN/m2 and 8 MN/m2 respectively, determine the maximum bending moment which the beam can safely carry. For steel E = 200 GN/M2; for timber E = 10 GN/M2(10 marks )
Determine the centroid of mass of the reinforcement; when the beams have a unit of mass per 20 kg / m meter.
The floor system of a residential building consists of 125mm thick reinforced concrete slab (unit weight =23.6KN/m^3) resting on the three 8m spanned RC floor beams spaced at 2.7 meters on center. Size of RC beam is 200mm x 450mm. NSCP load factors: 1.2DL & 1.6LL. Assume simple supports. Calculate the unfactored slab load in KN/m? express your answer in 1 decimal place.
STRENGTH OF MATERIALS UPVOTE WILL BE GIVEN. Please write the complete solutions legibly. Answer in 3 Decimal Places. Box the final answer. A 200 mm x 300 mm timber beam is simply supported over a span of 6 m and carries a concentrated load of 45 kN at the midspan. Neglecting the weight of the beam, how far, in meter, from each support can a hole 80 mm in diameter be bored horizontally at the middle of the cross section if the allowable bending stress is 16 MPa.
What is the internal force in member AD? A. 750 N , T B. 450 N , T C. 750 N , C D. 450 N , C SHOW SOLUTIONS
Three planks of wood were joined together to form the T-section shown in the figure. The beam is then subjected to a maximum shearing force of 60 kN. 1. Find its moment of Inertia a. 11.573 x10⁶ mm⁴ b. 10.573 x10⁶ mm⁴ c. 12.573 x10⁶ mm⁴ d. 13.573 x10⁶ mm⁴ 2. Find the shearing stress at the neutral axis a. 3.28 MPa b. 3.48 MPa c. 3.39 MPa d. 3.89 MPa 3. Find the shearing stress at the junction of the T-section. a. 30.81 MPa b. 32.59 MPa c. 30.35 MPa d. 31.77 MPa
It is obtained by fixing 4 wooden planks to each other with nails.given as a cross section. 2 verticals forming the sectionplank 20 mm X 80 mm, the other two planks 20 mm X 120 mmin size. between the nails fastening the planksthe distance is s = 50 mm. allowed on each nailThe safe cutting force is 300 N. a) What is the highest vertical shear force that the beam can safely carry? b) What is the highest shear stress occurring in the section corresponding to this shear force?
The rectangular piece of wood, 76 mm by 174 mm, is used as a compression block. The grain of the wood makes a 30.3º angle with the horizontal, as shown in the figure. Determine the shearing stress (in MPa) on the plane of the grain if the allowable compression stress on the plane of the grain is 20.2 MPa. Round off the final answer to four decimal places.