1.What is a pre-bid subtrade proposal, and of what benefit is it to the contractor’s estimator?

a.To a general contractor?

b.To a subcontractor?

2.What is a pre-bid subtrade proposal, and of what benefit is it to the contractor’s estimator?

3.What are the benefits and disadvantages to a general contractor of having subtrades provide surety bonds?

A pumping well has four monitoring wells, MW1 is 20m, MW2 is 500m, MW3 is 600m, MW4 is 700m, and the pond is 950m from the pumping well. The drawdown measured at MW1 during the pumping test conducted at a rate of 0.240m3/min:

T=0.195m2/min and S=1.32x10^-4

What drawdown is expected at the four monitoring wells after 5 years of pumping at 30 L/s?

Mix the aggregates given the results of sieve analysis test in Table 1 in appropriate proportions, show the granulometry curves of each aggregate and mixture in Figure 2, calculate the fineness modulus (FM) of the mixture.

3. Two triaxial tests are performed on a clay. At failure, the results are:

Test 1: σ₃ = 30 kPa, P = 0.45 kN, A = 0.01 m², u = 10 kPa

Test 2: σ₃ = 60 kPa, P = 0.70 kN, A = 0.01 m², u = 20 kPa

1. Find σ₁, σ₃, σ'₁, and σ'₃ at failure for both tests.
2. Draw the effective stress Mohr's circle for both tests and draw the Mohr-Coulomb failure envelope for the clay. What are f' and c' for the clay? Write the equation for the Mohr-Coulomb failure envelope.
3. Is the clay normally consolidated or over consolidated? Why?

Assignment will be prepared on any issue (It is up to you) concerning occupational health and safety and your professional field. For example

If you are a Civil Engineering student; investigate and report the relationship between occupational health and safety and construction Works.

approximately 5 pages document.

i need a report 5 page for relationship between occupational health and safety with civil engineering field

(a) DESCRIBE the reasons why concrete has to be pre-stressed before use as a load-bearing beam. [3 MARKS]

(b) EXPLAIN with DIAGRAMS how pre-stressed concrete is made. [5 MARKS]

(c) EXPLAIN why pre-stressed concrete loses its strength when subjected to excessive heat from a fire. [2 MARKS]

Describe the process of producing GFRC panels, illustrating your account with simple sketches.?

A 12 in. x 18 in. rectangular beam has an effective span of 20 ft. A dead load of 1500 lb/ft (includes self weight) and a live load of 4000 lb/ft is applied to the beam. The concrete and steel strengths are 4000 psi and 60000 psi respectively. Design and detail the shear reinforcement for the beam. Assume d is 2 inches less than h

Que 1: a. Describe four different materials used for curing.

            b. Explain how ponding curing different from wet covering curing

C. Explain factors that could affect the curing of concrete

Briefly discuss how does the incorporation of aggregates influence strength of cement basis materials (hint explain why strength of concrete is lower than strength of cement paste)

Address how your hotel/resort will impact the surrounding community in the areas of energy and water use as well as waste-trash and sewerage. The project will identify how the property, its’ activities and guests will impact the surrounding environment, depending on the nature of your recreational activities. This hotel is located in Islamorada, FL (Florida keys)

8) Design a concrete mix for the following conditions and constraints using the absolute volume method: Design Environment : Non-air entrained concrete will be used to cast Concrete frame. Required design strength(5000 psi) Minimum dimension (10 in.) Minimum space between rebars (1.5 in.) Minimum cover over rebars (2.5 in.) Standard deviation of compressive strength (600 psi) , (25 samples) Available Materials Cement Type II , moderate exposure Coarse aggregate Nominal Maximum size 1 in. river gravel (round) Bulk oven dry specific gravity =2.65, absorption = 3%, oven dry density 110 pcf , Moisture content 2%. Fine aggregate : Natural sand , Bulk oven-dry specific 2.5 , Absorption = 1% , Moisture content = 0.5% , Fineness modulus = 2.80