-Is this a crack or a creep ?  -what is the diffrence between a crack and a creep?

Q: Calculate the breaking stress (

A: Given:  Side of concrete cube, a=15 cm = 150 mm Load at time of breaking, P kN = 1000*P N To find :…

Q: Assuming you have been offered a job position as the lead Engineer to supervise the restoration of a…

A: Given: The crack length is 0.026 mm. The radius of curvature is 0.00028 mm. The theoretical fracture…

Q: PROBLEM: Determine the crack width of the following given beams: Take Bh = 1.20, fy = 414 MPa and…

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Q: What is the prestress steel loss from steel relaxation at 356 days for a Grade 270 low-relaxation…

A: Given:- Initial stress = 190,000 psi Yield stress = 245,000 psi Time period = 356 days To…

Q: are the advantages and limitations of pre-stressing

A: Reinforced concrete is concrete with steel bars inside. The bars are placed in a form and the…

Q: 64. The crack propagation in the concrete girders can be arrested by using the principles of A. O…

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Q: Explain Creep Properties.

A: Creep : Creep is the tendency of a solid material to move slowly or deform permanently under the…

Q: A spherical gas-storage tank with an inside diameter of 21 ft is being constructed to store gas…

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Q: difference between the stress distribution of these two- equations ab a distance r= 0.02 a ahead of…

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Q: what crack is acceptable crack in concrete surface? explain your answer

A: Concrete offers structural strength, stiffness, and distortion resistance. Concrete constructions,…

Q: How does the Elastic rebound results?

A: Earthquakes are basically produced by the brittle deformation of rocks. The lithosphere (which is…

Q: Discuss about the pre stressing system,and anchorages and pre stress losses in detail.

A: Prestressed concrete works on the idea that compressive stresses produced in a concrete member by…

Q: =\ Fill in the blanks with appropriate words. 1. The fracture planes oriented more or less ---- 2.…

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Q: What force is required to punch a 21-mm-diameter hole in a plate that is 23.8 mm thick? The shear…

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Q: A tension test was carried out for a specimen having 610 mm in length and an average diameter of…

A: Since you have posted a question with multiple sub-parts, we will solve the first three sub-parts…

Q: A 4340 steel plate containing an interior crack that is 2cm long, 10cm wide, and 0.5 cm thick. The…

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Q: A material containing cracks of initial length 0.010 mm is subjected to alternating tensile stresses…

A: Given:- Initial length =0.010mm tensile stress=25 and 125MPa number of cycles=350,000 alternating…

Q: 2- The slump test is used for measurement the... a- compressive strength 3- Compressive strength…

A: 2. The slump test is used for the measurement of workability. Answer:- d Explaination:- The concrete…

Q: What is the minimum allowable thickness for a 24 inch steel pipe under an internal pressure of 125…

A: As per the ASME code, the equation for minimum allowable thickness is- t= PD/2(SE+PY)…

Q: An indirect ultrasonic test was performed to obtain an estimate of the crack depth that exists in a…

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Q: A punch having a diameter of 19 mm is used to punch a hole in a 6-mm plate. If a punch force of 125…

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Q: At what percentage of compressive strength of concrete do the tensile cracks move upward 33% 50%…

A: RCC beam stages: 1) Un-cracked Concrete Stage 2) Concrete Cracked-Elastic Stresses Stage 3) Beam…

Q: A 6 inches diameter rivet undergoes a shear force of V=1750 pounds. Find the average shear stress in…

A: Question is based on a rivet connection. Diameter of rivet and Shear force on rivet are given in the…

Q: Spell out the drawbacks and disadvantages of the limit state methods and working stress method.

A: It assumes that concrete is elastic which is not true as the concrete behaves inelastically even on…

Q: Write detailed notes on the following using diagrams and graphs where necessary. A laboratory test…

A: Question is based on the laboratory test on soil . Various method to determine the shear strength of…

Q: Why do the X-shaped cracks easy to appear in the wall of masonry structure under earthquake

A: the X-shaped cracks easy to appear in the wall of masonry structure under earthquake.

Q: From the beam shown, fc' = 28 MPa, fy = 414 MPa, βh = 1.20, Cc = 40 mm. Take D = 25 mm diameter…

A: Given: fc' = 28 MPa, fy = 414 MPa,  βh = 1.20, Cc = 40 mm b = 300 mm Crack width, w = ?

Q: crack tip opening displacement(CTOD)

A: solution  the question asked here the explanation for CTOD CTOD means the crack tip opening…

Q: What are the Effect of Tension Cracks?

A: The tension crack is the crack which occurs by the upper surface of the stability slope. When there…

Q: An indirect ultrasonic test was performed to obtain an estimate of the crack depth that exists in a…

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Q: 7) In a simple-supported regular concrete beam under loading, we might see vertical cracks at mid-…

A: The inclined cracks in beam is occurs at mid span of beam this is due to increase in shear stress.…

Q: Is the fracture in the picture below brittle or ductile? Where is the location of the initiation of…

A: Solution: Ductile fracture is the one, where the specimen undergoes yielding and passes through its…

Q: What is the relationship between the depth of penetration and the hardness of the materials?

A: Introduction: In soil engineering and construction technology we discuss about hardness of materials…

Q: Discuss in detail testing of cracks with any specific method with available experimental details.

A: Brief concept introduction- Cracks- A crack is a type of failure in which fracture lines occur…

Q: A 150mm diameter cylindrical concrete specimen was tested for splitting tensile strength. The…

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Q: 1. a. Two relatively large plates, one of granite and one of slate, are subjected to a tensile…

A: To find maximum length of a surface crack?

Q: 33 The stress components at a critical point that is in plane stress due to a force P are 3D 10P МPа…

A: It is required to determine the principal stresses.…

Q: What are the causes of tensile cracks under beams

A: There are various reasons for the tensile cracks:-  Tensile cracks in the reinforced concrete beams…

Q: 글 Find maximum crack width assume interior exposure for the beam of hollow section shown in Fig.…

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Q: Define Creep effects

A: Creep is elastic deformation in the concrete, which happens following a long-term continuous load.…

Q: 1. At what percentage of compressive strength of concrete do the tensile cracks move farther upward.…

A: According to ACI code modulus of rupture (fr) or tensile strength is given by fr = 7.5λfc psi…

Q: 1. What is the difference between direct and shear stress 2. What type of fracture has occurred for…

A: As per guidelines please post rest questions separately

Q: . Calculate the strain at the centroid of the tension steel in single layer if the effective depth…

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Q: The breaking strength of a 15.0 mm diameter bar was 540 MPa and the cross-sectional diameter after…

A: Given data, Initial diameter D = 15 mm Diameter after rupture d = 12.3 mm Stress = 540 MPa

Q: What is the maximum stress that can be safely applied to a steel bar which contains a circular…

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Crack Detection

Concrete materials are meant for supporting structures, building foundations and they act as several load-bearing structures. Over time, due to environmental conditions, and based on the constituent materials used, concrete materials are subjected to a great degree of distress. Corrosion of the reinforcement bars due to chemical influences, uneven base, earthquake, drying shrinkages, and alkali-aggregate reactions are some of the reasons for concrete distress.