1.40 In a ready-mix plant, cylindrical samples are prepared and tested periodicallyto detect any mix problem and to ensure that the compressive strength ishigher than the lower specification limit. The minimum target value was setat 5,000 psi. The following compressive strength data were collected.CompressiveStrength (psi)CompressiveStrength (psi)Sample No.Sample No.1559511669525139125449635913527845192146697551881551956.52411660217596417532058751856576155196595105115205235a. Calculate the mean, standard deviation, and the coefficient of variationof the data.b. Using a spreadsheet program, create a control chart for these data showingthe target value and the lower specification limit. Is the plant productionmeeting the specification requirement? If not, comment on possible rea-sons. Comment on the data scatter.

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Answered: 1.40 In a ready-mix plant, cylindrical…

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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@ (i) Concrete is used in a variety of applications from high-rise constructions to road pavements, bridges and floor slabs. Engineers will specify the strength of concrete mixes needed for each specific application. Compressive stress testing is carried out on test samples from concrete batches for purposes of quality control. In the space provided, sketch and label the fracture pattern of the concrete test piece after a compressive test. musgaib edt nodig Stansi VOR beforomo of bebe si giordinien fest2 quintetoeditedal budala wold Talno banoqquz odlo dianorte sliznat big or hobson axed loota 4300 GAOI (0)
A 150mm diameter cylindrical concrete specimen was tested for splitting tensile strength. The Sample failed when the applied force was 120 kN. What is the splitting tensile stress at failure in MPa? The sample length is 300mm
Cracking Analysis of Reinforced Concrete ANSWER A. TO G. COMPLETE SOLUTIONS -positive bending moment = +200KNm -draw transformation of areas -draw strain and stress diagram
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A concrete specimen with b = d is supported at both ends 600mm apart. It is tested for flexure strength with load at midspan of 100kN and failed with a flexural stress of 52.083 MPa. What is the dimension b and d of the specimen in mm?
In a ready-mix plant, cylindrical samples are prepared and tested periodically to detect any mix problem and to ensure that the compressive strength is higher than the lower specification limit. The minimum target value was set at 27.6 MPa. The compressive strength data shown in Table P7.48 were collected. Use one system of units only as specified by the instructor. a. Calculate the mean, standard deviation, and the coefficient of variation of the data.b. Using a spreadsheet program, create a control chart for these data showing the target value and the lower specification limit. Is the plant production meeting the specification requirement? If not, comment on possible reasons. Comment on the data scatter.
In a ready-mix plant, cylindrical samples are prepared and tested periodically to detect any mix problem and to ensure that the compressive strength is higher than the lower specification limit. The minimum target value was at 42.0 MPa. The following compressive strength data were collected: All in Mega-Pascal (MPa) 41.8, 38.3, 42.5, 39.6, 42.5, 39.3, 41.2, 40.9, 39.8, 41.6 42.9, 43.4, 39.9, 44.7, 45.1, 43.9, 42.4, 41.7, 41.1, 42.1 Calculate the Arithmetic Mean, Median, and Standard Deviation. (Non-anonymous question@) .
A concrete test cylinder with a cross-sectional area of 28.3 in squared is to be tested in axial compression. Before loading two marks are scribed on the cylinder precisely 8 in apart (as shown in the figure below) when the load is 40,000 lb the marks are measured and found to be 7.997 in apart determine the E value for this concrete. Assume an approximately linear relationship between stress and strain.
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