CEW Section Quiz 08

1. An excavation has Station 1+00 = 100 ft2 and Station 2+20 = 550 ft2. Calculate the total net cut.

2. An additional station (midway between the 2 stations in question 1) has an area = 350 ft2. Calculate the total net cut.

3. One end of an excavation is at station 1+55 and has a cross-sectional area of 1,345 ft2. The opposite end is at station 0+00 and has a cross-sectional area of 0 ft2. What is the total net cut for this site?

4. Calculate the number of acres in a quarter section.

5. One pole (when measuring length) is equal to:

CEW Section Quiz 06

1. In the AASHTO Soil Classification System is based on _____ soil groups.

2. Which of the soil classification systems recognizes approximately 1,000 soil subgroups within the United States?

3. In ACI mix design (ACI 211.1), the water/cement ratio theory states that for a given combination of materials and as long as workable consistency is obtained, the __________of concrete at a given age depends on the w/c ratio.

4. In ACI mix design (ACI 211.1), which of the following is not one of the common steps:

5. Calculate the shear modulus (G) for a 1” diameter steel bar subjected to a 1500 lbs axial, tension force. The original length of the bar is 36” and the deformation is 0.02”.

CEW Section Quiz 05

1. Referring to the sketch above, if the Angle of Intersection = 37° and the Radius = 281 ft, determine the length of the Subtangent.

2. What is the External Distance (E)?

3. The Radius of a basic circular curve is 450 ft. The Point of Curvature (PC) is at Station 0 + 500. Calculate the Length of Curve from PC to Point A (at station 0 + 593).

4. A vertical sag curve is used where the change in grade is positive, such as valleys, The 3 defining points are: I. PVC, II. PVI, III. POS, IV. PVT, V. PNR

CEW Section Quiz 04

1. Calculate the flow in a 6 ft wide x 3 ft deep, rectangular, concrete channel with a 0.5% slope.

2. A 8 ft wide by 4 ft deep rectangular channel has an obstruction that creates a 2 ft deep flow downstream. What is the velocity downstream of the obstruction?

3. Which of the following is not a typical function of a retention pond:

4. Given an average rainfall intensity is 4.5 inches per hour, a 25-acre drainage area has a peak runoff rate of ______. The drainage area is 50% paved (C = 0.85) and 50% vegetation (C = 0.10).

5. Calculate Reynold’s number for a 4” inside diameter pipe with water flowing at 1.5 ft3/sec. The absolute roughness coefficient = 8.7 x 10-4 ft. Kinematic viscosity of water = 1.217 x 105ft2/s.

CEW Section Quiz 03

1. A steel beam fixed at one end and simply supported at the other creates a unit stress of 7,500 psi under what change in temperature? The coefficient of expansion = 6.5 x 10-6 in/in-°F and the modulus of elasticity = 29,000,000psi.

2. A 10 ft cantilevered wood beam (E = 1,500,000 psi and I = 864 in4) is subjected to a uniform load of 10 kips/ft. What is the maximum deflection?

3. What is the deflection at the free end of a 18 ft. long cantilever steel beam with a point load of 12,000 lbs 8 feet from the free end? The beam is a W16x67, I = 954 in4, E = 29,000,000 psi

Use the following beam for questions 4 thru 7. L = 30 ft, X = 12 ft, and W = 25 kips/ft. E = Modulus of Elasticity (for steel use 29,000 ksi). I = Moment of Inertia (in4) = 1330 in4

4. What is the shear force at R1?

5. What is the shear force at R2?

6. What is the maximum bending moment?

7. What is the deflection at X?

CEW Section Quiz 02

1. What height retaining wall must be built to resist a total earth pressure force of 5,000 lbs. if the total unit weight of the soil is 135 pcf and has a friction value of 24 degrees?

2. Determine the unit weight (ɣ, in lb/ft3) and the dry unit weight ((ɣd, in lb/ft3) of a soil with the following conditions: Standard Proctor test weight (W) = 4.80 lbs. and Moisture content (w) = 10.77%. Volume of a Standard Proctor mold (V) = 1/30 ft3.

3. What is the degree of saturation (S) of the following soil? Maximum dry density = 130 pcf, Optimum Moisture Content = 10.77%, Specific gravity of the solids (Gs) = 6.35. Unit weight of water (ɣw) is 62.4 pcf.

4. In the drawing shown, what is the total pressure at the point shown? The pore water pressure = 3.121 psi and Zw = Z2 and Z1 = 30 ft.

5. A 20 ft thick layer of consolidated clay has a 5 ft thick layer of sand on top and a 15 ft thick layer of sand beneath. How much time is required to reach 95% consolidation in a soil with a consolidation coefficient (cv) of 0.5 ft2/day?

CEW Section Quiz 01

1. Which of the following standards addresses construction loads pertaining to temporary facilities?

2. Two 18-foot long, simply supported beams are temporary installed to support a small construction crane. The crane will have 4 points of contact on the beams (2 contact points per beam.) The points of contact are 6 feet apart. What size beams are required if the maximum allowable deflection is ½”? The weight of the crane plus the maximum load it can lift equals 1,000 kips.

3. A method of construction where prefabricated wall panels are transported to the jobsite with electrical wiring, receptacles, and switches already installed in known as:

4. A steel brace is required to support a temporary shoring wall. 1 – ¾” A307 bolt will be used to attach the support to the shoring. What is the maximum shear force the bolt can resist?

5. A temporary support will have ¼” angles bolted to a beam. The load on the connection is 36 kips and single shear is the main concern. What size and how many A307 bolts will be required per connection?

CEW Sample Exam

1. 200 yd3 (CY) of undisturbed bank soil that is excavated, stored, and then placed and compacted as back fill will have a final volume of __________. The soil’s swell factor is 21% and the shrinkage factor is 14%.

2. The soil excavated from an undisturbed site is typically measured in units of:

3. How much backfill soil is required to fill a 3 ft deep x 3 feet wide x 1000 foot long trench? The soil swell is 27% and the shrinkage is 10%.

4. The first step in assembling a CPM project plan is to define the _______ including duration, start date, finish date, predecessors, etc.

5. In a project’s CPM schedule, the following 5 items make up the critical path: (1) 4 days, (2) 2 days, (3) 10 days, (4) 21 days, and (5) 7 days. If a defined path has the following 3 items – (a) 4 days, (b) 14 days, and (c) 7 days – to be completed by the completion date, what is the total float?