4. Lime and soda process is to be designed for the water analysis presented below, Thequantity of water to be treated is 12 MGD.Estimate the total hardness, carbonate hardness and non-carbonate hardness.Determine the amount of lime and soda to soften the water to a final hardness of 95 moAas CaCO,Estimate the annual cost of softening if the cost of dry lime (CaO) is a dime perkilogram and cost of soda ash (Na-CO,) is 20 cents per kilogram (assume bothcompounds to be 90% pure). (AW: Ca-40, Mg-24.3, Na-23, C-12,0-16)aclConstituent mgl mg/lasC&CO,Ca12AlkalinityCO2150Show transcribed image text

Given:- quantity of water treated =12MGD Lime and soda process To find:- a)total hardness ,carbonate…

Answered: quantity of water to be treated is 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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4-33. Following are results of gradation tests on three aggregates: Aggregate A 100% 92% 41% 19% 7% 4% 2% 1% Passing 25 mm (1 in.) 19 mm (3/4 in.) 9.5 mm (3/8 in.) 4.75 mm (No. 4) 2.36 mm (No. 8) 600 μm (No. 30) 300 μm (No. 50) 75 μm (No. 200) Aggregate B 100% 77% 60% 42% 36% 28% Aggregate C 100% 96% 79% 40% 16% 3% Combine these to give a gradation falling approximately in the center of the specification given in Section 4-5.1.
In a laboratory we are doing a series of tests on a sample of aggregate. This sample has the wet weight of 586.3 gr and dry weight of 513.9 gr. If the absorption of this aggregate is measured as 2.23%. Calculate the percent of free water in the original wet sample.
Samples of coarse aggregate from a stockpile are brought to the laboratory for determination of specific gravities and absorption. The following masses were obtained.Mass of moist aggregate = 3,500 gramsMass of oven-dried aggregate = 3,420 gramsMass of aggregates submerged in water = 1,800 gramsMass of SSD aggregate = 3,430 gramsDetermine;a) moisture content of stockpile aggregate, in percentb) absorption, in percentc) free moisture new solution please
Samples of coarse aggregate from a stockpile are brought to the laboratory for determination of specific gravities and absorption. The following masses were obtained.Mass of moist aggregate = 3,500 gramsMass of oven-dried aggregate = 3,420 gramsMass of aggregates submerged in water = 1,800 gramsMass of SSD aggregate = 3,430 gramsDetermine;a) moisture content of stockpile aggregate, in percentb) absorption, in percentc) free moisture
Sample of coarse aggregate from a stockpile are brought to the laboratory for determination of specific gravities and absorption. The following masses were obtained.Mass of moist aggregate = 5,982 gramsMass of oven-dried aggregate = 5,892 gramsMass of aggregates submerged in water = 4,082 gramsMass of SSD aggregate = 5,897 grams a) absorption, in percentb) moisture content of stockpile aggregate, in percentc) free moisture
Aggregate particles are classified as flaky (Aggregate Shape test) when they have a thickness (smallest dimension) o А. Less than 0.6 of their mean sieve size. В. More than 0.6 of their mean sieve size. C. More than 0.5 of their mean sieve size. D. Less than 0.5 of their mean sieve size. B.
What is the weight of fine aggregates in kilograms needed for the design mix? Use three decimal places in the computation of volumes Use two decimal places for the computed weight of fine aggregates
2) Two aggregates (Al and A2) were obtained from the field. They were brought to the oven dry condition (OD) and weighed. Data for each of the aggregates is presented in the table below. (Density of water=lg/cm³) Table 1. Absorption capacity and moisture content data. A1 A2 600 g 600 g Field Weight Oven Dry Weight Absorption Capacity (%) | 0.6 % 595.3 g 598.3 g 0.7 % a) Describe the field moisture state of each aggregate, Al and A2 (i.e. wet, SSD, or air dry). For each sample would you add water or dry the sample to bring it to SSD state? Determine the expected mass of each sample in the SSD state. b) If the bulk volume Al oven dry is 220 cm³ and the bulk volume of A2 oven dry is 250 cm³, determine the bulk oven dry specific gravity for each aggregate, Al and A2.
Demonstrate the concept of liquid viscosity measurements preparation
A water sample was examined and following observations were made: Species Concentration(milliequivalent) Calcium, Ca2 10 Magnesium, Mg2 Chloride, Cl 4 Sulphate, SO,- 11 Use above data, and choose the correct statement(s). Permanent hardness is caused by NO3 , S042, ions. Correct Option B Carbonate hardness of sample is 150 mg/l as Caco3 Your answer is IN-CORRECT Special method such as base-exchange process can be used to remove permanent hardness. Your option is Correct D Non-carbonate hardness in a 200 ml sample of given water is 150 mg as CaCo3- Correct Option
2) Two aggregates (Al and A2) were obtained from the field. They were brought to the oven dry condition (OD) and weighed. Data for each of the aggregates is presented in the table below. (Density of water=1g/cm') Table 1. Absorption capacity and moisture content data. A1 A2 Field Weight 600 g 600 g 598.3 g Oven Dry Weight Absorption Capacity (%) 0.6 % 595.3 g 0.7% a) Describe the field moisture state of each aggregate, Al and A2 (i.e. wet, SSD, or air dry). For each sample would you add water or dry the sample to bring it to SSD state? Determine the expected mass of each sample in the SSD state. b) If the bulk volume Al oven dry is 220 cm and the bulk volume of A2 oven dry is 250 cm2, determine the bulk oven dry specific gravity for each aggregate, Al and A2. MONSTER E12 PRT SC PAUSE う

There are two sources of aggregates (A, B). A sample has been taken from both sources and measured their mass as shown in table below. Measurement Wet mass (9) Oven-dry mass (g) Aggregate A 500 480 Aggregate B 600 564 (a) Determine the total moisture content for the samples from both aggregate sources, respectively. (b) Determine the total moisture content for an aggregate blend with 30% of aggregate A and 70% of aggregate B.

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