Morning Wood
What are the actual dimensions of a standard, dimensional "2x4" piece of lumber
1.5 inches by 3.5 inches
2,500 Watts is equal to how many kilowatts?
2.5 kW
You are staking out a rectangular building pad that is 100 feet long and 50 feet wide. What is the total perimeter (total length of all four sides) of the pad?
300 feet
A 500-gallon water buffalo (potable water tank) needs to be filled. If the fill pump operates at a rate of 25 gallons per minute (GPM), how many minutes will it take to fill the tank completely?
20 mins
Soldiers shall be protected from falls when working at heights of _______ feet or more?
6 feet
What are the actual cross-sectional area of a 2" x 4" wooden board.
5.25
A simple circuit has a voltage of 120V and a resistance of 10 ohms (Ω). What is the current (in amps) flowing through the circuit?
Ohm's Law (I = V / R)
12 amps
A dump truck has a capacity of 12 cubic yards. You need to haul away a stockpile of 150 cubic yards of loose soil. How many truck trips will be required?
13 trips
A drainage pipe for a field latrine must have a minimum slope of 1/4 inch per foot to ensure proper flow. If the total length of the pipe run is 60 feet, what is the minimum total vertical drop required from the start of the pipe to the end?
15 inches
The rough-in phase of a wiring job is mounting the outlet boxes.
What is the minimum spacing from the floor for outlets?
12" or 1'
You are cutting a board and need to add two measurements together: 4 3/8" and 2 1/4". What is the total combined measurement?
6 5/8"
A motor is rated at 8 amps and will be running for several hours. National Electrical Code (NEC) requires that continuous loads be calculated at 125% of their rating for sizing the circuit conductor and breaker. What is the minimum ampacity required for the circuit conductor?
10 amps
You need to excavate 5,000 Bank Cubic Yards (BCY) of sandy soil. The soil has a swell factor of 12% (0.12). Using the formula Loose Cubic Yards (LCY) = BCY × (1 + swell), how many LCY of material will you actually be hauling?
5,600 LCY
You need to cut a replacement piece of copper pipe. The total gap is 15 1/8 inches. You must account for the insertion depth into the fittings at each end, which is 5/8" per fitting. What is the actual length of the pipe you need to cut?
16 3/8 inches
Determine the percent slope of an approach to a river gap that has a horizontal distance of 150 meters and a vertical rise of 18 meters.
(% Slope = [Vertical Rise / Horizontal Distance] * 100)
12%
You are framing a wall with studs placed "16 inches on center." If your first stud is at the very beginning (0 inches), where should the center of the fourth stud be located?
48 inches
You are given a TOC that has 16 lamps at 100 Watts each in a 120 Volt system connected to a 15 Amp breaker. What is the total current drawn by the lamps.
(Hint: I = P divided by E)
13.33 Amps
A backhoe has a standard production rate of 70 Loose Cubic Yards per hour (LCY/hr). However, due to poor job site conditions, an efficiency factor of 0.7 must be applied. SPC Casteel also has average skill, requiring an additional efficiency factor of 0.8. What is the adjusted, actual production rate for this operation?
39.2 LCY
A standard rectangular grease trap measures 2 feet long, 1.5 feet wide, and 1.5 feet deep. What is the volume of the trap in cubic feet?
4.5 cubic feet
1st PLT needs to construct a rectangle single-belt protective wire obstacle with side lengths of 1200 by 800 meters. The total effective length of wire needed is calculated as Perimeter × 1.1. Each 300-meter section requires 160 long pickets. Calculate the total number of long pickets required for the entire perimeter. (Note: You must round up to the nearest whole number for the number of sections).
2,400 long pickets
Refer to board
You are running a 120V circuit over a long distance to power a load that draws 12 amps. The total length of the copper wire run (to the load and back) is 400 feet. You must keep the voltage drop below 3%. Using the formula Voltage Drop (VD) = 2 × K × I × D / CM:
K (for copper) ≈ 12.9
I = Current (12A)
D = One-way distance (200 feet)
CM = Circular Mils of the wire (For #12 AWG wire, CM ≈ 6,530)
The voltage drop is 9.48V
You need to excavate a trench that is 150 feet long, 3 feet wide, and 4 feet deep. Using the formula Volume = Length × Width × Depth, calculate the total volume of the trench in cubic yards
(Note: 1 cubic yard = 27 cubic feet).
66.67 cubic yards
You are testing a sump pump's flow rate. It pumps a 55-gallon drum full of water in exactly 2.5 minutes. What is the flow rate of the pump in gallons per minute (GPM)?
22 GPM
An engineer team needs to construct 800 feet of a triple standard concertina fence. The labor estimate is 24 man-hours per 100 feet. If a 12-person squad is assigned the task, how many real hours will it take them to complete it?
16 hours