A Civil engineer involved in construction requires 1100, 2100 and 1600 m3 of sand, fine gravel and coarse gravel for a building project. There are three pits from which these materials can be obtained. The composition of these pits is PIT # SAND % FINE GRAVEL % COARSE GRAVEL % 1 52 30 18 2 20 50 30 3 25 20 55 How many cubic meters must be hauled from PIT 1 in order to meet the engineer's needs? Round-off to 4 decimal places Use GAUSS-SEIDEL METHOD

A Civil engineer involved in construction requires 1100, 2100 and 1600 m3 of sand, fine gravel and coarse gravel for a building project. There are three pits from which these materials can be obtained. The composition of these pits is PIT # SAND % FINE GRAVEL % COARSE GRAVEL % 1 52 30 18 2 20 50 30 3 25 20 55 How many cubic meters must be hauled from PIT 1 in order to meet the engineer's needs? Round-off to 4 decimal places Use GAUSS-SEIDEL METHOD

Solid Waste Engineering

3rd Edition

ISBN:9781305635203

Author:Worrell, William A.

Publisher:Worrell, William A.

Chapter5: Separation Processes

Section: Chapter Questions

Problem 5.14P: Two materials, A and B, are to be separated using two unit operations, 1 and 2. The feed has 10...

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A Civil engineer involved in construction requires 1500, 2500 and 2000 m3 of sand, fine gravel and coarse gravel for a building project. There are three pits from which these materials can be obtained. The composition of these pits is PIT # SAND % FINE GRAVEL % COARSE GRAVEL % 1 52 30 18 20 50 30 3 25 20 55 How many cubic meters must be hauled from PIT 2 in order to meet the engineer's needs? Round-off to 4 decimal places Use GAUSS-SEIDEL METHOD
A civil engineer involved in construction requires 6000, 5000, and 8000 m³ of sand, gravel, and coarse gravel, respectively, for building project. There are three pits from which these materials can be obtained. The composition of these pits Сoarse Sand% Fine Gravel% Gravel% Pit 1 32 30 38 Pit 2 25 40 35 Pit 3 35 15 50 How many cubic meters must be hauled from each pit in order to meet the engineer's needs? Use at least 2 from any matrix method.
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13. A contractor needs 375 m³ of aggregate base for a highway construction project. It will be compacted to a dry unit weight of 18.9 kN/m³. This material is available in a stockpile at a local material supply yard at a water content of 7.75%, but is sold by the metric ton and not by cubic meters (ton 3 1000kg). a. How many tons of aggregate should the contractor purchase? Round your answer to the nearest whole number. b. A few weeks later, an intense rainstorm increased the water content of the stockpile to 14%. If the contractor orders the same quantity for an identical section of the highway, how many cubic meters. of compacted aggregate base will he produce?
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A Highway contractor has four locations A, B, C, and D on a road contract to which crushed stone is to be delivered. The stone, which is all of the same quality is to be supplied from two quarries 1 and 2. The table below shows the relative transportation cost per cubic meter of transporting stone from each quarry to each site. Quarry 12 2 A 9 12 45 Location B с D Relative transportation costs ($ per m³) 15 10 8 105 Quantities required at each location (m³) 11 3 135 6 150 Quarry output (m³) 120 255 a) What is the optimal allocation of the crushed stone from each quarry to each location? b) What is the transportation cost corresponding to the solution obtained in part a?
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A cement grinding mill "A" with a capacity of 50 tons per hour employs P12,000 per tonforged steel grinding balls with a wear rate of 100 grams per ton of cement processed.Another cement mill of the same capacity, "B," utilizes P50,000 per ton high chromesteel grinding balls with a wear rate of 20 grams per ton of cement processed.Determine the more cost-effective grinding mill, keeping all other factors constant. do not use excel, use formula
A simple platform having a stair will be constructed, as an estimator, your boss gave you an assignment to estimate the concrete works needed for the stairs only. The width of the stair is exactly 1 meter. ... 1980 4090 1572 408 180 720 1636 Using Class "A" mixture, how many cu.m. of gravel is needed for the project? Note: The values are not rounded to the nearest 50ths; use the exact value instead. A) 1.75 cu.m. B) 1.95 cu.m. 2.15 cu.m. D) 1.65 cu.m.
QUESTION 1 A Civil engineer involved in construction requires 1000, 2000 and 1500 m3 of sand, fine gravel and coarse gravel for a building project. There are three pits from which these materials can be obtained. The composition of these pits is PIT # SAND % FINE GRAVEL % COARSE GRAVEL % 1 52 30 18 2 20 50 30 25 20 55 How many cubic meters must be hauled from PIT 1 in order to meet the engineer's needs? Round-off to 4 decimal places Use GAUSS-JACOBI METHOD QUESTION 2 Determine the Relative Error in the Previous Problem. Round-off to 10 decimal places.