In batching of aggregates the moisture content is expected to be in saturated surface dry condition. However, in a concrete production, the actual moisture content of coarse aggregate on the site just before the batching measured as 8%, and its saturated surface dry condition requires 5% moisture content. If 1000kg/m³ of coarse aggregate and 220kg/m³ of free water is needed for a concrete production, how many kg of coarse aggregate and water is to be placed into the mixer for one m³ of concrete production?

) Write the major reasons for using admixtures for modifications fresh concrete?

why monitoring and controlling projects is important. provide examples to do well?(i.e Schedule, Checklist, Dashboards ......)

Discuss in your own words the major characteristics of a Project. In your own words, describe the benefits of a structured Project approach.

An engineer took asphalt cores on a roadway that has seen rutting and bleeding over the past three years. If the calculated air voids were 2.5% but the design air void content was 4%, explain what effect the calculated air voids had on the rutting and bleeding seen on the asphalt roadway.

Please I would like to know what are the Eflluents and waste materials generated in large scale bio Ethanol plants making Ethanol form sugar beet.

Thanks

Why structural concrete is reinforced by steel? Discuss the weakness and strength of both concrete and steel in this case

An intern has asked why a unit demand of less than 440 Lpcd was selected for a village of 2,000 in the upper peninsula of Michigan. Explain why. Would your answer be different if the village was in the southern half of Arizona? Why?

A very wide embankment with height of 3m and the soil unit weight 19 kn/m3 to be constructed. Calculate the normal stress, water pressure and effective stress at two positions: At the middle of clay, the depth = 5 m and the saturated unit weight = 27 kn/m3, and at the middle of sand, the depth = 5 and the saturated unit weight = 21 kn/m3.

For two cases

- Before constructing embankment

-Instantly after constructing the embankment

1. describe the methods for determining roadway condition

1. describe how the driver and vehicle characteristics influence the geometric design of the highway

2. describe design standards for major parts of highway

The particle has a mass of 0.6 kg and is confined to move along the smooth horizontal slot due to the rotation of the arm OA. Assume the particle contacts only one side of the slot at any instant. The arm has an angular acceleration of θ¨ = 3 rad/s2 when θ˙ = 2 rad/s at θ = 30∘. (Figure 1) Part A Determine the magnitude of the force of the rod on the particle when θ = 30∘. Express your answer to three significant figures and include the appropriate units. F F = nothing nothing Request Answer Part B Determine the magnitude of the normal force of the slot on the particle when θ = 30∘. Express your answer to three significant figures and include the appropriate units. N N = nothing nothing Request Answer Provide Feedback Figure

1. how to select suitable soil as the subgrade material

2.describe the different types of islands used in channelizing at grade intersections indicating the principal function of each type