The specified concrete strength for a bridge is 5500 psi. You have 25 test results for the same concrete from the similar project with the sample standard deviation psi. Calculate the required average strength . 1. The specified concrete strength for a bridge is 5500 psi. You have 25 test results for thesame concrete from the similar project with the sample standard deviation s, = 450 psi.Calculate the required average strength for.

Answered: Image /qna-images/answer/3263136a-f57b-4f9e-82ca-16f4e99404e4.jpg

1. The specified concrete strength for a bridge is 5500 psi. You have 25 test results for the same concrete from the similar project with the sample standard deviation s, = 450 psi. Calculate the required average strength fer-

1. The specified concrete strength for a bridge is 5500 psi. You have 25 test results for the same concrete from the similar project with the sample standard deviation s, = 450 psi. Calculate the required average strength fer-

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: If the required slump is 75 mm and the maximum aggregate size is 22.5 mm, what is the quantity of…

A: Given Data: Slump size = 75mm Aggregate Size = 22.5mm

Q: A center point loading is used to test concrete for flexure. The sample is 150mm x 150mm and has a…

A: To find flexure stress at failure

Q: A building design calls for specified concrete strength f, of 4000 psi. Calculate the average…

A: Given:- Specified concrete strength f'c = 4000 psi To determine:- Average required strength (f'cr)…

Q: A: Different types of plasticizers in concrete and determine their effect on fresh concrete B: Find…

A: Solution(a)- Different types of plasticizers in concrete- 1. Citrates- They're tetra esters, formed…

Q: With explanation please Magnitude of shrinkage strains depends upon the composition of the concrete.…

A: Magnitude of shrinkage strains depends upon the composition of the concrete. The above statement is…

Q: Three 100*200 mm cylindrical concrete specimens were tested for 28 days compressive strength and…

A: Solution: Given: Three Compress strengths of same concrete sample: C1=25.5MPa C2=28.6Mpa C3=24.8MPa…

Q: Given the following tabulated data representing a sample from a concrete mix used in a project. The…

Q: Sketch the structure of Reinforced Concrete Cement. Explain different phases in it and explain each…

Q: 150 mm * 300 mm concrete cylinders were made of the same batch and sepa- rated at random to six…

A: Given: Cylinder dimension = 150mm * 300mm Diameter = 150mm Height = 300mm (Please refer images…

Q: A batch of concrete is composed of 200 lbm fine aggregate, 350 lbm coarse aggregate, 94 lbm cement,…

Q: 10 %) of concrete samples have compressive strength less than (30 mn/m2) and (20%) have strength…

A: Given:- 10 % concrete samples compressive strength<30 MN/m2 20 % concrete samples compressive…

Q: 150mm cylindrical concrete specimen was tested for tensile strength. When the applied load is…

Q: Three 150 mm * 300 mm concrete cylinders with water to cement ratios of 0.4, 0.6, and 0.8,…

Q: III. FIELD TEST FOR FRESH CONCRETE DESCRIBE and EXPLAIN what type of test is conducted on the image…

Q: What is the advantage from using lean concrete?

A: Hi! Thank you for the question As per the honor code, We’ll answer one question since the exact one…

Q: A project specifies a concrete strength of at least 20.7 MPa. Materials engineers will design the…

A: Given: Specified compressive strength of concrete, f'c= 20.7 MPa Standard deviation, s = 2.4 MPa.

Q: The frequency distribution of the compressive strength of 20 concrete cube specimens is given in the…

Q: Three 6 in. * 12 in. concrete cylinders with randomly oriented steel fiber contents of 0, 2, and 3%…

A: (a) The expression for stress is given by, Here, B is the width of the specimen and D is the height…

Q: Situation 3 A compressive strength test were conducted to the following cylinder, Cylinder 1 3015…

A: Given data, Diameter d = 634 in

Q: In a ready mixed concrete plant, 28 days compressive strength results of 14-cylinder specimens were…

A: The 28 days compressive strength results of 14 cylinder specimens are given Specimen Compressive…

Q: Table 1. Failure Load for 200 mm cubic samples No Failure Load (kN) 1 1645 1638 3 1648 4 1671 5.…

A: It is required to determine the compressive strength. Tabulate the following,

Q: Assume a test cylinder that is used to find compressive strength of concrete failed when the load…

A: Finding out compressive strength.

Q: eter of the sample is 6”. a 31.1 MPa b 30.1 MPa

A: Average strengthC=55100+54800+552003=55033.3kgStrength in 'N'=55033.3kg×10=550kNso,

Q: State the proper procedure for filling the concrete cylinder? If the peak load of concrete cylinder…

A: Procedure for Filling the Concrete Cylinder: The concrete should be filled in the cylinder layer by…

Q: What is the effect of water–cement ratio on the permeability of hardened concrete? How does…

A: The water-cement ratio is the ratio of the weight of water to the weight of cement. The Water-cement…

Q: Question-6 b The gel-space ratio of a concrete sample is given as 0.6. What is the theoretical…

A: Given data- Gel-space ratio X=0.6, To Find- The theoretical strength of the sample.

Q: Problem 1: Concrete is required for internal columns of a building. The specified strength is 25 MPa…

A: Given :

Q: 4. Please discuss the Poisson's ratio of concrete in terms of compressive strength. Is there an…

A: Poisson's ratio is defined as ratio of transverse strain to the ratio of longitudinal strain .…

Q: A 150mm x 150mm concrete specimen was tested for flexure strength over a span of 600mm. The load at…

Q: 6′′ * 12′′ concrete cylinders were made of the same batch and separated at random to six equal…

A: (a) The expression for the compressive strength of concrete is given by, Here, CS is the…

Q: 13. What is the standard size of a concrete compression specimen (the cylinders we tested)? What are…

A: this procedure is used for determine the compressive strength of the concrete. ASTM C39 and ASTM C42…

Q: If the Compresive strength of concrete Fc is 35 Mpa and A = 97 and B=4, what *.will be the w/c ratio…

A: Given Compressive strength of concrete, Fc = 35 MPa empirical constant, A = 97 MPa B = 4 To find :…

Q: The gel space ratio of a concrete sample is given as 589. What is the theoretical strength (N/mm2)…

A: Given that :- Gel space ratio of a concrete sample is defined as the ratio of volume of hydrated…

Question

100%

The specified concrete strength for a bridge is 5500 psi. You have 25 test results for the same concrete from the similar project with the sample standard deviation psi. Calculate the required average strength .

1. The specified concrete strength for a bridge is 5500 psi. You have 25 test results for the
same concrete from the similar project with the sample standard deviation s, = 450 psi.
Calculate the required average strength for.

Expert Solution

This question has been solved!

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

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1: State the given data

VIEW

Step 2: Determine the required average compressive strength

VIEW

Solution

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps with 3 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

2. You are an inspector on a job site, inspecting strength tests from a job with a design strength of 4500 psi. A total of 12 tests were performed on concrete from this job; the strength test results (in psi) are shown below. 4520 4840 4190 4960 4720 4890 4620 4290 4390 4680 4550 4620 Is this concrete acceptable?
Reinforced concrete
A 150mm diameter cylindrical concrete specimen was tested for compressive strength. Thestress at failure is 27.6 MPa, what is the maximum applied force in kN?
Q.2 If the (010×10) cylinder compressive strength of O.P.C. concrete at 10-day is (14 MPa). Calculate (20×20×20) cube comp. strength at age of 28 days.
Please give me both a and b answers a. If a concrete with 28 day compressive strength of 4500 psi is being poured, then it how much strength would you expect after 7 days(assuming good curing conditions)? Explain how you obtain the 7 day strength? b. Briefly explain the effect of water to cement ratio on concrete strength?
A center-point loading flexural test was performed on a concrete beam with across section of 100 mm X100 mm and a span of 200 mm. If the failure loadwas 26.9 kN, find the flexure strength.
what would be the average compressive strength of concrete if the load at failure of the 3 trials are 55,100 kg 54,800 kg and 55,200 kg. Diameter of the sample is 6" a. 31.1 MPa b. 30.6 MPa c. 31.6 MPa d. 30.1 MPa
Q2- A cylindrical concrete specimens 150 mm in diam. and 300mm high each were tested in split tensile test, the following results were observed, determine the tensile strength of concrete and estimate the compressive strength. S.N 1 3 4 7 Load, kN 267.3 269.4 260.5 255.4 287.2 291.4 282.5 (Load+5x18
Q1/ Cube of concrete 100 mm long pressed with a pressure test of 98 mm length. To determine the correct geometric strain