Taking my WDM1 today here in WA. Unfortunately I’ve given it a few tries already and literally within grasp of passing.. 68% High 60’s 🤦🏻♂️ see how it goes today! Appreciate the break down!
A pipeline is dosed at 50ppm,using the continuous feed method with 12% sodium hyop chlorite. If the pipe is 18" and it is filled at 1fps, what is the feed rate in gallons per hour?
There are easier ways to the solution yes. But I find those to be kind of cheater ways. The point of the example is to showcase the power of understanding the very simple and fun process of conversions. With that talent in your tool belt you can figure out what ever inoculation problem you might come across.
Can ya solve this! I’m stuck! How many gallons of water are in the reservoir if a well pumped into an empty reservoir for 12 hours through a 12 inch pipe, with a velocity of 2 ft./s. ❤
To figure out how many gallons of water were pumped into the reservoir, we first need to calculate the flow rate through the pipe, then see how much water that flow rate delivers over 12 hours. Flow rate is the amount of water that moves through the pipe per unit of time. By multiplying the flow rate by the total time, we can find the total volume of water pumped. What we know: Time = 12 hours, velocity= 2 ft/s and Area of pipe is unknow, but diameter is 12 inches Step 1: Determine the flow rate in cubic feet per second (cfs) We start with the size of the pipe and the velocity of the water. The pipe has a diameter of 12 inches (or 1 foot), and the water is flowing at a velocity of 2 feet per second (ft/s). Area of the pipe cross-section: Since the pipe is circular, the cross-sectional area is the area of a circle: Area=π×r^2 The radius (r) of the pipe is half the diameter, which is (1/2)12, which is 6 inches, or 0.5 feet. So, using the formula: Area≈π×r^2= π×(0.5)^2 0.785 square feet Step 2: Flow Rate: Now if you multiply the area and velocity you get 0.785ft^2 x 2 ft/s = 1.57 ft^3/s Step 3: So, every second, 1.57 cubic feet of water is flowing through the pipe. So we can find the volume my multiply the flow by the 12 hours. Since water is flowing at 1.57 cubic feet every second, we need to see how many seconds are in 12 hours. There are 60 seconds in a minute, 60 minutes in an hour, and 12 hours total, so: 12×60×60=43,200 seconds Now, multiply the flow rate (1.57 cubic feet per second) by the number of seconds (43,200): 1.57×43,200= 67,824 cubic feet Step 4: Convert: there are 7.48 gallons of water in 1 cubic foot. So, multiply the total cubic feet by 7.48 to find out how many gallons that is: 67,824×7.48=507,382 gallons
actually Elias i work a full time job so tutoring consistently would be a little too much to take on. But if or when you have issues post them here and I will do my best to tutor you through them either by replying to your comment, or making a whole new video! Thank you for asking!
What’s the goal? You want to know how much of a chemical called hypochlorite (which contains chlorine) you need to add to 200 gallons of water to get a chlorine level of 150 milligrams per liter (mg/L). What’s in the hypochlorite? The hypochlorite you’re using is 5% chlorine. This means that in every 100 parts of the liquid, 5 parts(ml) are pure chlorine (0.05g/mL). So, if you had 1 liter of this solution, it would contain 50 grams of chlorine (1000ml=1L). Step-by-Step Explanation: 1. First, convert gallons to liters: We know 200 gallons of water is the amount you’re working with, but the chlorine concentration is given in milligrams per liter (mg/L). So, you need to convert gallons to liters. 200 gallonsx3.785 =757 liters (because 1 gallon=3.785liters) 2.Figure out how much chlorine you need: You want 150 mg (which is like 0.15 grams) of chlorine in each liter of water. Since you have 757 liters, the total amount of chlorine you need is: 150mg/L ×757L =113,550 mg (which is 113.55 grams of chlorine) 3. Find out how much chlorine is in your hypochlorite solution: Now, how many liters of this 5% solution would give you 113.55 grams of chlorine? 113.55 grams / 50 grams per liter = 2.27 Liters Convert that amount to gallons: (1 liter is 0.264 gallons) 2.27× 0.264 = 0.6 gallons Conclusion: To get the chlorine level you want, you need to add about 0.6 gallons of the hypochlorite solution to your 200 gallons of water. So, think of it like this: out of every gallon of that hypochlorite, only 5% is actually chlorine. You need enough of that 5% to disinfect all 200 gallons of water, and after some math, it turns out that you’ll need about 0.6 gallons of it.
At 08:52 you say to divide 8.34 by 5. It should be the other way around... Divide 5 by 8.34. Your solution (0.6gal) is correct.
Taking my WDM1 today here in WA. Unfortunately I’ve given it a few tries already and literally within grasp of passing.. 68% High 60’s 🤦🏻♂️ see how it goes today! Appreciate the break down!
howd it go??
A pipeline is dosed at 50ppm,using the continuous feed method with 12% sodium hyop chlorite. If the pipe is 18" and it is filled at 1fps, what is the feed rate in gallons per hour?
Can't you just find the volume which is MGD of the 200 gallons then multiply 150 x 8.34 lbs? It saves all that converting?
There are easier ways to the solution yes. But I find those to be kind of cheater ways.
The point of the example is to showcase the power of understanding the very simple and fun process of conversions.
With that talent in your tool belt you can figure out what ever inoculation problem you might come across.
About to start for my D1 and just watching these I’m lost lol
Hello, I need help with a problem. How long would it take to empty a tank that's 28' H and 28' radius, at rate 2cfs through an 8" pipe.
How do you calculate feed rate to gallons per hour?
Can ya solve this! I’m stuck! How many gallons of water are in the reservoir if a well pumped into an empty reservoir for 12 hours through a 12 inch pipe, with a velocity of 2 ft./s. ❤
To figure out how many gallons of water were pumped into the reservoir, we first need to calculate the flow rate through the pipe, then see how much water that flow rate delivers over 12 hours. Flow rate is the amount of water that moves through the pipe per unit of time. By multiplying the flow rate by the total time, we can find the total volume of water pumped.
What we know: Time = 12 hours, velocity= 2 ft/s and Area of pipe is unknow, but diameter is 12 inches
Step 1: Determine the flow rate in cubic feet per second (cfs)
We start with the size of the pipe and the velocity of the water. The pipe has a diameter of 12 inches (or 1 foot), and the water is flowing at a velocity of 2 feet per second (ft/s).
Area of the pipe cross-section: Since the pipe is circular, the cross-sectional area is the area of a circle: Area=π×r^2
The radius (r) of the pipe is half the diameter, which is (1/2)12, which is 6 inches, or 0.5 feet.
So, using the formula:
Area≈π×r^2= π×(0.5)^2 0.785 square feet
Step 2: Flow Rate: Now if you multiply the area and velocity you get 0.785ft^2 x 2 ft/s = 1.57 ft^3/s
Step 3: So, every second, 1.57 cubic feet of water is flowing through the pipe. So we can find the volume my multiply the flow by the 12 hours. Since water is flowing at 1.57 cubic feet every second, we need to see how many seconds are in 12 hours.
There are 60 seconds in a minute, 60 minutes in an hour, and 12 hours total, so: 12×60×60=43,200 seconds
Now, multiply the flow rate (1.57 cubic feet per second) by the number of seconds (43,200): 1.57×43,200= 67,824 cubic feet
Step 4: Convert: there are 7.48 gallons of water in 1 cubic foot.
So, multiply the total cubic feet by 7.48 to find out how many gallons that is: 67,824×7.48=507,382 gallons
Do you have to remember the unit conversions or will their be a chart to tell you the value of each unit for the exam
There will be a chart with all the conversation and formulas you will need for the math. I just got my D1
I'm starting my sac State course today. I'd like to know how many math questions are on the licensing exam?
Out of 100 questions the last 25 are math and you need a 70% to pass
Hey man thank you for being cool and helping. Alot of people just put up videos and don't respond. I appreciate it. Your licensed in California?
@@richarddenny3897 no problem! Ya I’m licensed here in California
As of today it was the last 15 questions. Worth 2 points each.
How many questions can be missed?
30% if I remember correctly. I believe a 70% or better will pass but it might actually even be as low as 60%
correction. You need a 70% to pass
Could you tutor me ?
actually Elias i work a full time job so tutoring consistently would be a little too much to take on. But if or when you have issues post them here and I will do my best to tutor you through them either by replying to your comment, or making a whole new video! Thank you for asking!
Tried googling it but couldn't find the answer. How much time do they give you while taking the exam?
Usually 3 hours
@@danielg201286 thanks
What’s the goal?
You want to know how much of a chemical called hypochlorite (which contains chlorine) you need to add to 200 gallons of water to get a chlorine level of 150 milligrams per liter (mg/L).
What’s in the hypochlorite?
The hypochlorite you’re using is 5% chlorine. This means that in every 100 parts of the liquid, 5 parts(ml) are pure chlorine (0.05g/mL). So, if you had 1 liter of this solution, it would contain 50 grams of chlorine (1000ml=1L).
Step-by-Step Explanation:
1. First, convert gallons to liters:
We know 200 gallons of water is the amount you’re working with, but the chlorine concentration is given in milligrams per liter (mg/L). So, you need to convert gallons to liters.
200 gallonsx3.785 =757 liters (because 1 gallon=3.785liters)
2.Figure out how much chlorine you need:
You want 150 mg (which is like 0.15 grams) of chlorine in each liter of water. Since you have 757 liters, the total amount of chlorine you need is:
150mg/L ×757L =113,550 mg (which is 113.55 grams of chlorine)
3. Find out how much chlorine is in your hypochlorite solution:
Now, how many liters of this 5% solution would give you 113.55 grams of chlorine?
113.55 grams / 50 grams per liter = 2.27 Liters
Convert that amount to gallons:
(1 liter is 0.264 gallons) 2.27× 0.264 = 0.6 gallons
Conclusion:
To get the chlorine level you want, you need to add about 0.6 gallons of the hypochlorite solution to your 200 gallons of water.
So, think of it like this: out of every gallon of that hypochlorite, only 5% is actually chlorine. You need enough of that 5% to disinfect all 200 gallons of water, and after some math, it turns out that you’ll need about 0.6 gallons of it.
Bro you are making it more confusing. I appreciate the effort though. Thanx for trying to help 👍🏻
Oregon d1 test was not fun.
What did you find the most difficult? Any areas that blind sided you?
terrible way of doing it... the c1v1=c2v2 formula method is so much more straight forward.
Not everyone is a good teacher.
Not everyone is a good student.
@@JacobEcret👀🫢
How do you calculate feed rate in gallons per hour?