Sometimes we catch mistakes on the exams that we've created. If you purchased a digital download of any exam, you will be notified of any changes to it through email. Whenever a digital exam gets updated, an email of the change is sent out immediately. Then, you'll be able download it again...it's free if you purchased the digital copy.

For those that purchased a physical copy, track the changes listed below and update your exams accordingly. I update these exams as soon as I make the appropriate corrections, but because it's a physicaly copy, I have no way of informing you of the change unless you frequent this page.

Yes, even engineers can make mistakes, but hopefully, they can get ironed out. Thanks to everyone that has kept me on my toes with getting these updated. If you see an error somewhere, please let me know about it at isaac@civilengineeringacademy.com!

## The Ultimate Civil FE Exam

4/27/17 - Problem #106 used the wrong opening area in the solution. It should use 250 ft^2. The solution was fixed to use that.

4/28/17 - Problem #7 it solved for the wrong solution. The solution should be i-30j-11k. The solution and multiple choice was changed.

5/28/17 - Problem #84 Used a unit weight of 126 pcf in the solution and you should use 125 pcf as per the problem statement. This is fixed now. Revised solution.

6/27/17 - Problem #35 Solution is for the moment of inertia about the centroid of the x-axis. Revised the problem statement to reflect this.

6/27/17 - Problem #50 Answer choices incorrectly shown; however, the calculation is correct. Revised the solutions choices.

6/27/17 - Problem #53 Deflection at the end of the beam should be PL^3/3EI not PL^3/EI. Revised solution and multiple choice.

6/27/17 - Problem #54 Load along beam should be in lb/ft not kips/ft. Revised problem statement (figure).

6/27/17 - Problem #76 The length was not specified in the figure. Added the length of 6 meters to the figure.

6/27/17 - Problem #32 Solution for the force in EG should be 948.6 lb (compression), not 0. Revised the solution and multiple choice.

6/27/17 - Problem #101 There was a misunderstanding between starting at day 0 or day 1. Revised the solution.

12/1/16 - Updated Problem #12. There was an incorrect calculation for V2. The final answer should be 1.125 m/s.

12/1/16 - Updated page 81. The problems were listed as number 74 and 75. They should be 77 and 78.

12/1/16 - Problem #77 had the statement and solution not matching. This has been fixed as well as specifying Vu in the problem.

12/1/16 - Problem #107 has an incorrect problem statement, it should read 20.56 for the second fill. Also, typo for the table 100+00, should be 10+00.

## The Ultimate Civil PE Breadth Exam Volume 1

3/12/2017 - Updated Problem #37. Clarified the question as to what is dry and wet density. "...needs to be 15% with a wet density of 110 lb/ft³." Also added "If the borrow pit has a soil with a wet density of 100 lb/ft³..." Revised solutions and multiple choice options based on the change.

3/20/2017 - Updated Problem #20. Mistyped 3 feet on the perimeter calculation, it should be 5 feet, but the solution is correct.

4/2/17 - Updated #39. The question asked to solve for the loose volume but the solution solved for both the loose and the compacted volumes making it confusing. The answer is now clear regarding the loose volume equation as the answer.

4/4/17 - Updated Problem #6. Updated the problem statement to read "A 40-ton crane has four extendable outriggers that weigh 85,000 lbs." The original statment wasn't as clear. No other changes.

4/4/17 - Updated #14. Simply removed solving for the angle in the solution. It wasn't needed or necessary.

9/5/16 - Updated Problem #3 and #15 with better solution explanations as well as switched #3 to US units.

9/28/2016 - Updated Problem #3. The volume calculation had 3 fee****t in it and it should have used 36 inches. This was fixed up along with the final solution.

10/8/2016 - Updated Problem #31. The soil class description of A-7-5 was repeated, it was also mentioned about the PI when it should be the PL. The answer is the same.

10/22/2016 - Updated Problem #19. The problem statement doesn't specifically say to ignore the self weight of the beam so that was added.

11/30/2016 - Updated Problem #10. The problem statement only provides saturated density, while the top layer doesn't have a water table. The problem now includes the soil properties as follows: Saturated density = 100 pcf; normal density = 85 pcf.

12/28/2016 - Updated Problem #15. The units were incorrect. The final solution should have units of kip/ft^2 not lb/ft^2.

12/29/2016 - Updated Problem #21. The question asks for theoretical velocity but the actual velocity equation was used (using Cv). This was changed to solve for theoretical velocity.

## The Ultimate Civil PE Breadth Exam Volume 2

3/20/17 - Updated Problem #20. Added a better explanation of how to use the Manning's equation of head loss to solve for the diameter out of the CERM Eq. 39.30b. The solution didn't change.

3/20/17 - Updated Problem #21. In the problem statement added "...the pressure from B to A is measured 1000 psf." Knowing the direction makes more sense when solving for the HL in the final solution. The final answer didn't change.

4/16/17 - Updated Problem #20. R in the solution was written as 0.5D and R should be the hydraulic radius = A/P = (0.25*pi*D^2)/(pi*D) = 0.25D. The solution was the same when rounding.

9/26/17 - Updated Problem #1. The last sentence was updated to read ..."for the 40% of the third floor slabs." This was added to prevent confusion for solving for anything other than the 40% of the third floor.

9/26/17 - Updated #12. Added "unsaturated" to the statement clarifying the soil as such. No other changes.

9/26/16 - Updated Problem #6. Reworded the problem, solution, and multiple choice answers to avoid confusion.

9/26/16 - Problem #13 has a solution that wasn't carried out to find what Pallow was by taking Q and multiplying by the area of the footing. This has been fixed and Pallow is solved for. The solution was also changed to reflect the answers. Pallow=224,000 lbs.

10/8/2016 - Updated Problem #12 with a new graph as well as fixed d=D/H instead of d=H/D. Corrected the slope stability number from the graph to 5.6 and corrected the solution after solving with the new slope stability number.

10/8/2016 - Updated Problem #13. The problem statement listed 5 ft² for the foundation size and it should be 5'x5'. The solution is correct.

10/14/2016 - Updated Problem #30. The problem uses a Keq to solve for the coefficient of permeability but uses the wrong formula for vertical. It should be calculated using the formula (h1 + h2 + h3) / ( (h1/k1) + ( h2/k2) + (h3/k3) ).

10/30/2016 - Updated Problem #30. Completely re-wrote #30 to a soil phase diagram problem. It was too similar to another problem on Vol. 1's exam.

## The Ultimate Geotechical Depth Exam

9/11/17 - Problem #19. Problem statement listed 30 ft. drop and solution used 10 ft. Revised problem statement to 10 ft.

9/11/17 - Problem #31. Solution shows 1270*76 and it should be 1270*26 for the calculation of "A". Typo was fixed but calculation is correct.

9/11/17 - Problem #35. Revised sybols in the problem statment and solution to match that of Eq. 37.5 in CERM.

9/11/17 - Problem #40. The problem statement mentions a table with data that wasn't shown. This was fixed.

10/4/17 - Problem #25. There was a typo in the solution in Po, (110+62.4) was replaced with (100-62.4) in the equation. No other changes. The final solution was correct.

8/23/16 - Problem #4. The final answer should be 0.04764 in = 0.05 in. revise the multiple choice.

8/28/16 - Problem #9. The picture in the problem statement was giving wrong values for K3 and K4 that didn't match figure. Fixed.

8/31/16 - Problem #5. Revised the round off error.

10/6/16 - Problem #25. Fixed the clay layer information. For the clay c=0.75, it should be eo=0.75. The answer is not changed.

10/14/16 - Problem #16. Image and problem statement show a split-spoon spampler NOT a Shelby tub. The diameter and length was fixed to a length of 2', OD of 3", ID of 2.84".

10/16/16 - Problem #28. The figure in the problem statement is incorrect. The height should be 4'-10'-4'. No change in the solution.

10/16/16 - Problem #30. In the problem statement the mass of the mold and soil should be 13.9 lbs. The solution is correct, no other changes.

## The Ultimate Structural Depth Exam

3/20/17 - Problem #17. Added, "Check the compactness only, by assuming the beam is laterally supported," in the problem statement and added notes in the solution.

5/9/17 - Problem #11. Added, "Note that the member AD is very stiff and the compatibility requirement must be satisfied." to the problem statement.

5/9/17 - Problem #28. Revised the solution to Mmax, Sx and Cr and revised the multiple choice solutions.

5/9/17 - Problem #35. The solution is now worked out to be 0.08, the answer selection is still the same.

5/23/17 - Problem #25. The adjustment factors from the NDS were referenced using LRFD, this was changed to follow the ASD design per the NCEES specifications.

5/23/17 - Problem #18. Units for Ix and Iy should be in^4 not in^3. No other changes.

8/29/17 - Problem #21. The compression strength reduction factor in AISC is 0.9, while 0.85 is for concrete - they were mixed. The solution and answer selection was revised.

10/10/17 - Problem #29. The factored load coefficient should be 1.6. We revised the solution but the final answer after rounding is the same.

10/10/17 - Problem #39. fs should be 20ksi in the calculation. The solution was revised.

10/10/17 - Problem #7. Added better explination of solving for indeterminate structures, was missing an option from the solution. Revised solution.

1/24/16 - Problem #4. The units for the uniform load is solved in k/ft, should be k/in. the length value used in the solution is different than that used in the problem statement. Revise the problem statement as defined in the picture.

3/23/16 - Problem #12. Needed to divide the uniformly distibuted load by 12 to get k/in so that the answer will be in inches. Revised solution and multiple choice.

3/27/16 - Problem #26. 3*thickness of slab not 5* thickness (aci 7.6.5). Revised the solution and multiple choices. For main steel (ACI 7.6.5), the maximum spacing is the minimum between (3*thickness) and (18 in). For temperature and shrinkage steel (ACI 7.12.2.2), the maximum spacing is the minimum between (5*thickness) and (18 in).

10/5/16 - Problem #4. The length of the beam was changed 10 ft to 4 ft. The solution was not changed.

10/25/16 - Problem #22. Added the length of the beam is 13' in the problem statement. This makes it compliant with ACI 8.12.2 where the requirement should be 1/4 * span length of beam, not 1/4 * span length of slab. Revised the solution due to this.

10/26/16 - Problem #27. The table that is referenced (3-2 AISC) should be 3-4 of the AISC. I revised the solution and multiple choice.

## The Ultimate Construction Depth Exam

3/17/17 - Problem #4. The borrow and waste were reversed in the calculation. This was fixed along with the answer choices. The answer is now borrow = 9220 ft³ and waste = 5273.2 ft³.

9/11/17 - Problem #1. The elevation at station 1 should be 33.971(ft) not 39.971(ft) which trickled down to wrong elevation for the other stations. This has been fixed.

9/11/17 - Problem #2. The elevation data give for B=7.6 should be B=7.9 ft. The solution didn't change except for the volumes using that value in the calculations.

9/11/17 - Problem #3. At station 25+100 and 25+150 the elevations were listed as a positive 25.75 and 30.68 but should be listed as negative meaning it's the left side of the stationing. Solution is still correct. Fixed at the problem statement.

10/17/17 - Problem #24. Added the duration of 10 connecting the first two activities. No other changes.

1/13/16 - Problem #18. In the calculation for the piling Q-skin load it is not necessary to divide the equation by 4. This was fixed.

3/17/16 - Problem #11. Added statement about rate of interest. It was missing the interest rate of 6%.

10/4/16 - Problem #14. In the solution, volume of borrow should be 2120 - (-3153.2) = 5273.2 ft3. Revised solution and multiple choice option.

10/4/16 - Problem #4. In the solution, volume of borrow should be 2120 - (-3153.2) = 5273.2 ft3. Revised solution and multiple choice option. Also, In the solution, the volume of waste should be 9220 ft3, not 9120 ft3.

10/18/16 - Problem #32. In the solution, kips wasn't coverted correclty. Ra=25.6 kips.

10/20/16 - Problem #33. The solutions has units of lb/ft³ and it should be lb/ft².

10/24/16 - Problem #18. When solving for max strength of the piles the 23 should be 2*(3+4-2), and also (2) should be (s) making it 2(3+4-2)(s)+(4x1) in the numerator. The final answer is correct.

10/24/16 - Problem #37. I updated this problem to include a SF of 1.3, updated No = 5.5, and referenced a CERM equation. There was confusion on what equation to use to solve for depth of cut.

## The Ultimate Water Resources Depth Exam

2/7/17 - Problem #22. Revised a sentence in the problem statement. Changed "The water table is located 45' below the ground." to "The initial depth of the water table is located at 45' above the bedrock (non-aquifer layer)." No other changes.

10/23/17 - Problem #16. The solution had 9 as the solution and it is 9.5. No other changes, the answer selection was correct.

11/1/15 - Problem #4. Mistyped word (sheer to shear).

11/1/15 - Problem #21. Mistyped unit (ft³/s to ft³/day).

4/3/16 - Problem #1. D= 0.16 m * 100 cm / m = 16 cm (not 160 cm). Revised units in problem.

4/3/16 - Problem #2. Wrong unit conversion D = 200 cm *1 m / 100 cm = 2 m (not 0.2 m). The answer should be 20.4 m^3/s not 0.2 m^3/s. Revised problem statement.

4/3/16 - Problem #13. The wrong intensity was used in the solution then what was given in problem statement. The problem statement gave 3 in/hr as the intensity. Solution used 2 in/ hr as the intensity. So the answer should have been 168.75 cfs not 135 cfs. Also, it’s unnecessary to convert units from AC to SF or in/hr to ft/s as the conversion factor is 1. Revised the unecessary unit conversion.

4/3/16 - Problem #32. Duplicate, has 2 numbers of #32. Deleted one of them.

4/3/16 - Problem #34. The values used in the solutions were different than the values given in the problem statement. Washing machine with reduction devices problem statement has a value of 35, the solution answer had a value of 30 for this, therefore the total should have been 215 with reduction so (293-215)/293 * 100 = 26.6% (not 28.3%). Revised the problem statement.

## The Ultimate Transportation Depth Exam

10/29/17 - Problem #36. Added "..road to be constructed will need to have a dry __density__ of 105 lb/ft³...). No other changes.

10/29/17 - Problem #33. Fixed the equation for the wetted perimeter to b+2y(1+z²)^0.5 and gave a more detailed explination of the solution. Updated the solution and answer to 2.45.

10/29/17 - Problem #10. The PC is listed as 100+120 but it should be 101+20 following standard stationing coordinates. Also the equation asks for the station of PT but the answers are in lengths. This was changed to ask for the length of the curve.

11/14/16 - Problem #14. Replaced with new problem.

11/17/16 - Problem #17. Replaced with new problem.