1. Determine the Specific gravity of aggregate based on the following values: Mass of empty container: M1 kg Mass of container+ Aggregate: M2 kg Mass of container + Aggregate+ Container full of water: M3 kg Mass of container+ Full of water: M4 kg Explain the procedure for determining the specific gravity. M1 M2 M3 M4 P B 31.33 3.9 5.8 6.61 5.41 566.5 Lz 0.4 FL F 1 C 4 R 0.37 W 310 Lx 3.45 Ly 0.2

1. Determine the Specific gravity of aggregate based on the following values: Mass of empty container: M1 kg Mass of container+ Aggregate: M2 kg Mass of container + Aggregate+ Container full of water: M3 kg Mass of container+ Full of water: M4 kg Explain the procedure for determining the specific gravity. M1 M2 M3 M4 P B 31.33 3.9 5.8 6.61 5.41 566.5 Lz 0.4 FL F 1 C 4 R 0.37 W 310 Lx 3.45 Ly 0.2

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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A sample of a dry coarse grained material of 500 grams was shaken through a nest of sieves and the following results are obtained: 20 | 200 40 0.425 Sieve No. 10 2.00 4 60 100 Pan Opening (mm) % Passing 4.75 0.85 0.25 0.15 0.075 -- 94 60 30 10 7 5 3 31. Determine the uniformity coefficient. b. 4.424 32. Determine the coefficient of curvature. a. 4.706 C. 1.250 d. 0.85 а. 4.706 b. 4.424 C. 1.250 d. 0.85 33. Given that the soil is non-plastic, classify the soil by using the Unified Soil Classification System. a. GW b. GP C. Sw d. SP
5.28 Table P5.28 shows the grain size distributions of two aggregates A and B. TABLE P5.28 Sieve Size, mm 25 19 12.5 9.5 4.750 2.36 1.18 0.600 0.300 0.150 0.075 % Passing 100 Agg. A 92 76 71 53 38 32 17 10 5 3.0 % Passing 100 Agg. B 100 92 65 37 31 30 29 28 21 15.4 Answer the following questions and show all calculations: a. What are the maximum sizes of aggregates A and B? b. Is aggregate A well graded? Why? c. Is aggregate B well graded? Why? Note: In order to answer questions b and c, you need to plot the gradations on 0.45 gradation charts. You may create 0.45 power gradation charts using Excel or you may manually plot the data on a copy of Figure A.25. Determine the percent passing each sieve for the blended aggregate.
Three samples of aggregates were taken weighed in moist and dry condition. Moist Dry Unit Unit Absorption Volume Aggregate Wt. Wt. (%) (m³) (kN/m) (kN/m³) Sample 1 23.425 20.018 5.14 0.366 Sample 2 22.7 18.757 3.87 0.695 Sample 3 20.292 18.387 2.62 0.237 Where; Unit weight of water = 9.81 kN/m3 Determine the average free moisture content of the three samples.
5.14 Coarse aggregate is placed in a rigid bucket and rodded with a tamping rod to determine its unit weight. The following data are obtained: Volume of bucket = ¹/2 ft³ Weight of empty bucket = 20.3 lb Weight of bucket filled with dry rodded coarse aggregate: Trial 176.6 lb Trial 275.1 lb Questions and Problems 217 Trial 3 78.8 lb a. Calculate the average dry-rodded unit weight b. If the bulk dry specific gravity of the aggregate is 2.620, calculate the percent voids between aggregate particles for each trial.
Please solve points 4 and 5 only
1. Calculate the following properties for the data provided in the Table below for a coarse aggregate sample. a. Bulk SSD specific gravity b. Bulk Dry specific gravity A Bulk Dry Sp. Gr. = c. Apparent specific gravity d. Absorption capacity. В — С B Bulk SSD Sp. Gr. = В — С where A Apparent Sp. Gr. = А — С A = dry weight B = SSD weight C = submerged weight В — А (100) A Absorption (%) Weight of Pan + Oven- Dry Aggregate Weight of Pan Weight of Submerged Aggregate Weight of Pan + SD Aggregate 0.8495 Ib 1.9885 lb 0.6870 lb 1.9630 Ib 2. If the Moisture Content of a stockpile sample of the same coarse aggregates is 1.85 %, what is the moisture state of aggregate sample? Select from the four standard moisture states. Explain how you arrived at the answer. 3. If Bulk unit weight of coarse aggerates is 98 Ib/ft³determine the % Voids of dry-rodded aggregate. Youlk S.G(Bulk Dry)*Pwater %Solids * 100 4. Determine the % solids for 2 cases discussed in pre-lab video by using below data.…
Sieve analysis of a sample of fine aggregate resulted in the following data No. Sieve number 4 8 16 30 50 100 Sieve opening (mm) 4.75 2.36 1.18 0.6 0.3 0.15 Weight retained (g) 13 75 120 126 105 61 A) The total weight of the sample, assuming no mass loss during the analysis, is______ (g) a) 505; b) 500; c) 550 B) The half sieve used in the experiment is________. a) No.8; b) No.50; c) none of the above C) The fineness modulus of the aggregate________. a) 6.13; b) 3.16; c) 1.36 D) The average size of the aggregate___________. a) No.30; b) No.4; c) No.16
Coarse aggregate is placed in a rigid bucket and rodded with a tamping rod to determine its unit weight. The following data are obtained: Volume of bucket = ½ ft³ Weight of empty bucket = 20.3 lb Weight of bucket filled with dry rodded coarse aggregate Trial 1 = 69.6 lb Trial 2 = 68.2 lb Trial 3 = 71.6 lb a. Calculate the average dry-rodded unit weight b. If the bulk dry specific gravity of the aggregate is 2.620, calculate the per- cent voids between aggregate particles for each trial.
Manov Steel Inc. has a rolling mill that produces sheet steel with a nominal thickness of 0.125 inch. Suppose that the specification limits are given by LSL = 0.120 and USL = 0.130 inch. According to historical data, the actual thickness of a random sheet produced by the mill is normally distributed with mean and standard deviation of u = 0.125 and o = 0.0025. (a) What are the lower and upper natural tolerance limits (LNTL and UNTL) for individual sheets of steel? (b) What are the lower and upper control limits (LSL and USL) if we use a control chart that plots the average thickness of samples of size n = 4? (c) What will be the percentage nonconforming, given the above values for (LNTL, UNTL) and (LSL, USL)? What is the process capability index C? Do you consider this process capable of meeting its performance specifications? (d) Suppose that the process mean suddenly shifts from 0.125 to 0.1275. What happens to the process capability index C and the percentage nonconforming?
The following weights were found while determining the different specific gravities of a sample of coarse aggregate: Mass of moist coarse aggregate sample as brought to the laboratory: 5,298 g. Mass of oven dried aggregate: 5,200 g. Mass of aggregate submerged in water: 3,300 g. Mass of SSD aggregate: 5,220 g. Find the bulk saturated surface dry specific gravity. 2.718 2.715 2.223 3.103
A concrete beam sample has a width of 5 inches, a depth of 6 inches, and a length of 20 inches. The sample was tested for ASTM C293. The maximum load carried by the sample after its failure is 95 KN. Determine the modulus of rupture of the sample in psi. (use 1lbf = 4.45 N, round-up your answer to the nearest whole number that is divisible by 5, no need for unit)
Referring to the aggregate gradations A, B, and C in Figure P5.26, answer the following questions: a. What is the maximum size of each gradation? b. What is the nominal maximum size of each gradation? c. Classify each gradation as dense, open, or gap indicating the reason for each classification. 100 A 80- 60 40 0.075 0.30 1.18 2.36 4.75 9.5 12.5 19.0 25.0 0.15 0.60 Sieve sizes (mm) FIGURE P5.26 Percent passing 20