1. Explain me yourself / Introduce yourself?

I am a high school graduate and a certified plumber who is working in the plumbing field for past 4 years. I specialize in construction plumbing, repairing, replacing fixtures and new installations. I also have 6 months' work experience as a journeyman emergency plumber.

2. Tell me how long do you want to be a plumber?

I would love to be a plumber for the rest of my life. If eventually I cannot work anymore when I get older, I would love to run my own business.

3. Tell me how many years experience do you have plumbing?

I have a national craft certificate in plumbing and pipe fitting which is done i 4 years.

4. Tell me what advantages are there for PVC water mains?

We founded stack with oil and sometimes we founded the soil inside the pipes and its different a above pipe a good at sun and a underground pipe when it get hot by sun its creche or break.

5. Tell me is there any other trades you are looking to learn?

Not currently. I would like to focus only on plumbing until I finish school and obtain my master's plumbing license. After I may want to learn HVAC or electrical.

6. Tell me how do you address a low pressure complain?

I begin by checking for leaks, then check the pipe sizes they shouldn't be too wide if there is a pressure issue, incase both the checks come in negative I'd recommend installing a pressure pump to enhance the pressure.

7. Tell me how many houses have you plumbed before?

In all honesty, too many to count since our business mostly did residential plumbing. If I had to guess, I would say around 200.

8. Tell me have you ever changed a toilet before?

Yes, I have done this several times at college, and feel confident to do it independently.

9. Explain me what experience do you have with snaking clogged up pipes?

I have opened many snaking clogged up pipes which were deeply closed in the past while I was working. Even dough I was know as a plumber guy in my resident area while I was helping our neighbor to open their toilet.

10. What can you offer me that another person can't?

This is when you talk about your record of getting things done. Go into specifics from your résumé and portfolio; show an employer your value and how you'd be an asset.

Suggested answer: “I'm the best person for the job. I know there are other candidates who could fill this position, but my passion for excellence sets me apart from the pack. I am committed to always producing the best results. For example…”

Download Interview PDF

11. Tell me have you ever plumbed an office building?

No but I have worked with steel both in college and on site which I imagine will be the material used.

12. Do you know what is Pipe Dope?

A pipe dope is a pipe joint that is used to create a watertight seal.

13. Tell me who taught you mostly what you know in plumbing?

Installation of Showers, drainages, toilets, hand and dish wash basin, heating system, Irrigation pipe lines, Sprinklers, Fogger , and Misting pipe lines.

14. Tell me how do I know if I have a broken water line outside my house?

A broken water line out in the yard may include an excessively high water bill, puddles in your yard or the sound of running water when no faucets or appliances are using water. Blue Mountain can pinpoint the problem without needless trial and error destruction of working pipes. In many cases we can fix the problem right away and save you money.

15. Tell me how does your family feel about you being on call?

Of course sometimes they get upset depending on what we are currently doing, but they know it is my job and are happy and thankful I am able to have a job even if I am on call.

16. Do you know low Flush Toilet Problems?

You might buy a better flushing toilet for your situation. Some air assisted toilet flush well. When the low gallonage gravity toilets first came out I replaced a couple of new Kohler Wellworth Lites with the Am.Std. air assist toilet with good results. That was then and this is now. Today most brands of gravity toilets flush well (including the redesigned Kohler Wellworth models). Power assisted toilets tend to be noisy and frankly, today I definitely do not recommend power assisted toilets.
By the end of 1999 (most brands of U.S. made) gravity toilets manufactured were flushing fine. At the end of 2000 my guess is that over 85% of 1.6gpf toilets flushed well.

17. Please explain do you prefer PVC or copper for piping?

PVC is definitely a better choice, since copper pipes tend to rust, heat up and are time taking to install in contrast to plastic piping that is easy to install, has greater insulation and is rust proof.

18. Tell us what is the worst thing you had to do as a plumber?

To me, there is no worst thing I've had to do. I've had a lot of dirty days as a plumber, but it is my job and to me there is no one job that was worse than any other job.

19. Explain me what do you enjoy most about being a plumber?

I enjoy making the customer happy, but what I enjoy the most is overcoming a challenging problem and fixing and correcting whatever the problem may be, its a great feeling.

20. Explain me what all tools are required to unclog a sink?

• Cup Plunger
• Duct tape or wash cloth
• Sink Auger
• Channeled type pliers
• Bucket

21. Tell me when I Run The CWM My Toilet Bubbles/Overflows or My Shower Overflows?

When the lowest plumbing fixture in the house overflows when another fixture (like a CWM) is draining; the septic tank needs to be pumped, there is a break in the sewer pipe outside the house or the main drain is plugged somewhere.

22. Tell me do you own plumbing equipment?

Yes, I carry my own tool kit for basic tools.

23. Explain me do you prefer your water mains be pvc or copper?

Pvc under the building and just inside the building then change to copper pretty much instantly with a stop tap.

24. Tell me what are some health and safety issues that plumber face?

Some of the health and safety risk that plumber face are

• Exposure to a hazardous substance like lead, sulfur dioxide, mould, carcinogenic substances
• Exposure to flammable and combustible materials
• Working in awkward positions may lead to musculoskeletal injuries
• Lifting heavy or awkward objects
• Risk of eye injury from flying particles
• Burns from hot equipment's like steam lines, hot water heater, etc.
• Cut and bruises due to a sharp end of pipes
• Risk of electric shock while digging under-ground water pipes

25. Tell me do Unused Drains Dry Up and Get Rough Inside?

Yes, drain pipes do dry out and get real rough. Will it clear up with use? Maybe.

Download Interview PDF

26. Tell me is there really a difference between hard water and soft?

Yes. In fact, the difference can be damaging to your home and your body. Maybe you have experienced damaged clothing from the laundry, excessive soap consumption, pipe scaling, faucet and fixture deterioration, skin problems, or undesirable tastes or odors from your water. If you have, then you have a water problem. Call Blue Mountain for expert advice on all kinds of water treatment systems.

27. Tell me what are the different types of chemical drain cleaners are used?

• Caustic drain cleaners: It contains a substance like caustic potash; they are bases and give electron to the clogging substance. This reaction will generate a lot of heat and dissolves the clogging substance, and clears the blockage.
• Oxidizing drain cleaners: It contains chemicals like household bleach, peroxides and nitrates. These chemical cause the organic material of the clog to lose an electron and become oxidized. It also generates heat and gas, which clears the blockage.
• Acid drain cleaners: It contains a higher concentration of acid and the hydronium ions present in acid reacts with clogging substance and releases heat. This heat will dissolve the substance and clears the blockage.

28. Explain me how long has it been since you've had a leak with copper piping?

It honestly has been awhile. When I first learned to solder, I always had leaks, but as I did it more I got better and only on occasion would a copper pipe leak.

29. Explain me some of the most common tools required for plumbing?

• Adjustable pipe wrench
• Faucet valve seat wrench
• Faucet valve reseating tool
• Faucet packing and washers
• Tubing cutter
• Teflon tape
• Cup plunger
• Flange plunger
• Closet Auger
• Sink Auger

30. Do you know how to fix a leaky PVC water pipe?

• Drain the water out and make the leakage pipe dry
• Now take a coupling, similar to the size of the pipe that is leaking
• Now cut the coupling into half
• Make sure that the half you going to use should have stop inside, as you have to slide the leakage pipe into it
• Slather the inside of the patch with adhesive, make sure that you have enough of the adhesive on your patch, as that is the portion that going to connect with the leaked pipe.
• Place the patch onto the pipe and slide it into

31. Do you know what is the most common reason for sump pump failure?

The leading cause for sump pump to failure is usually a switching problem. Sometimes the pump can move inside the basin. This movement causes the float that operates the switch to lodge against its side. Debris can also be a factor by interfering with the action of the pump switch. It is important to make sure that your pump switch and float arm assembly move freely. The main thing to remember about sump pumps is that they dont last forevereven if you never use them. Internal part wear out and make them virtually useless when you need them most! Blue Mountain can test, maintain or replace any brand of sump pump. For flood-prone areas and homes that get water seeping in on a regular basis you may want to consider a sump pump back up system. There are even non-electric systems that work in the case of a power failure. Call Blue Mountain for more information.

32. Please explain conventional Water Heaters vs. Tankless Water Heaters?

Conventional water heaters are by far the most common type of water heater in the U.S. today. They range in size from 20 to 80 gallons (or larger) and are fueled by electricity, natural gas, propane, or oil. Called torageunits, these water heaters transfer heat from a burner or coil to water in an insulated tank. The down side to a conventional water heater is that energy is consumed even when no hot water is being used.

Tankless water heaters do not contain a storage tank like conventional water heaters. A gas burner or electric element heats the water only when there is a demand for hot water.

There are many things to consider when choosing conventional vs. tankless water heating systems. Your Blue Mountain representative can guide you through your options and get the right system for home that will give years of service and efficient performance.

33. Basic Plumbing interview questions:

☛ What was the most important task you ever had?
☛ What is the most difficult thing about working with you?
☛ What five words would be describe you as Plumbing Foreman?
☛ List five words that describe your character.
☛ How open-minded are you to other members ideas?
☛ How well did your college experience prepare you for this Plumbing Foreman job?
☛ Was there a person in your career who really made a difference?

34. Situational Plumber interview questions:

☛ What parts of your education do you see as relevant to this position?
☛ What do you think, would you be willing to travel for work?
☛ What quality of yours or personal trait matters the most in your career?
☛ You have not done this sort of job before. How will you succeed?
☛ How did you handle meeting a tight deadline?

35. Competency Based Plumber interview questions:

☛ Tell me about an important goal that you set in the past.
☛ If you were hiring a person for this job, what would you look for?
☛ What are three positive things your last boss would say about you?
☛ Why did you decide to pursue this career?
☛ What was the most stressful situation you have faced?

Think of actual examples you can use to describe your skills. Just wait for them ending their questions then answer.
Talk about specific work related experience for the position you're interviewing for.

36. Behavioral Plumbing Interview Questions:

☛ What is the worst thing you had to do as a plumber?
☛ Tell us about your most challenging task and how you performed.
☛ Describe a time you were given incomplete instructions about a project. What did you do?
☛ Recall a time you offered excellent customer service as a plumber.
☛ Describe a time you had to work in a team to complete a project. What was your role?

37. Strengths and Weaknesses based Plumber interview questions:

☛ Would you rather write a report or give it verbally?
☛ Your greatest weakness in school or at work?
☛ What do you believe are your key strengths?
☛ Tell us about the last time you had to negotiate with someone.
☛ Time when you made a suggestion to improve the work.

38. Basic Plumber job interview questions:

☛ How did you prepare for this work?
☛ A team experience you found disappointing.
☛ Do you have any questions for me?
☛ How long would you stay with our company?
☛ What are you looking for in terms of career development?

39. General Plumbing interview questions:

☛ How do you cope without motivation?
☛ What do you feel is the best educational preparation for this Plumbing Foreman job?
☛ How do you evaluate your ability to handle conflict?
☛ List five words that describe your character.
☛ If you were hiring a person for Plumbing Foreman job, what would you look for?
☛ What is the difference between a manager and a leader?
☛ What was your most difficult decision?

This question is asked to find out whether you are committed to the Plumbing Foreman job. Stay focused on what is critical to the job. Talk about the job and the company for which you are being interviewed.

40. Informational Plumbing Foreman interview questions:

☛ Describe the most difficult scheduling problem you have faced at Plumbing Foreman position.
☛ Give an example of risk that you had to take. Why did you decide to take the risk?
☛ Why did you leave your last job.
☛ Describe some ideas that were implemented.
☛ How would you feel about working for someone who knows less than you?
☛ Tell me about your proudest achievement.
☛ Do you prefer to work independently or on a team?

Tell them about the training you received or the work related experience you gained. Highlight past situations where you've managed frustration effectively. Do your homework before you go to Plumbing Foreman interview.

Download Interview PDF

41. Role-specific Plumbing Interview Questions:

☛ What experience do you have with snaking clogged pipes?
☛ Do you prefer your water mains to be PVC or copper?
☛ What advantages do PVC water mains provide?
☛ Have you ever installed a shower with multiple shower heads? How did you keep water pressure high?
☛ What are the advantages for installing steel plumbing underneath a sink? In what cases would you do it?
☛ Tell us about one downside of a conventional water heater. Would you suggest an alternative?

42. Phone Based Plumbing interview questions:

☛ Did you ever not meet your goals? Why?
☛ What salary are you seeking?
☛ Can you describe a time when your work as Plumbing Foreman was criticized?
☛ What have you done to improve your verbal communication skills?
☛ What kinds of things really get your excited?
☛ Your greatest weakness in school or at work?
☛ Does a leader need power or authority? How do you influence people?

Highlight past situations where you've managed frustration effectively.
Review the company's mission statement to understand how it addresses its long-term goals and the way it does business.
Furthermore, try to use verbs, not adjectives in your interview answer.

43. Behavioral Plumber interview questions:

☛ Give examples of ideas you've had or implemented.
☛ Describe a situation where you had to plan or organise something.
☛ What kind of personality do you work best with and why?
☛ Give me an example of a high-pressure situation?
☛ Give an example of a time you successfully worked on a team.

44. Communication skills based Plumber interview questions:

☛ What do you see yourself doing within the first days of this job?
☛ What three character traits would your friends use to describe you?
☛ What irritates you about other people?
☛ What type of work environment do you prefer?
☛ Describe a time you were faced with stresses which tested your skills.

45. Phone Based Plumber interview questions:

☛ What are you expecting from this firm in the future?
☛ What are your long-term goals or career plans?
☛ What has been your biggest professional disappointment?
☛ Do you prefer to work in a small, medium or large company?
☛ Tell me about an important issue you encountered recently.

46. Video Based Plumber interview questions:

☛ What was the most difficult period in your life, and how did you deal with it?
☛ Situation in which you had to arrive at a compromise.
☛ Give some examples of teamwork.
☛ Give me an example that best describes your organizational skills.
☛ What negative thing would your last boss say about you?

47. Operational and Situational Based Plumbing Interview Questions:

☛ What license do you have as a plumber?
☛ Have you ever plumbed an office building?
☛ If you had to install a new system for an entire floor of a building, where would you start?
☛ What is the first thing you look at before you design a plumbing system?
☛ Do you have any experience installing water-based heating systems?
☛ Walk us through the installation of a gas and liquid heating system, like an air-conditioning unit.
☛ If a customer complains their house has too little water pressure, what steps would you take to fix the problem?
☛ If a customer needs a new toilet installed, you remove the old one and discover the floor is rotting, what do you do?
☛ How do you prioritize when dealing with different customers at the same time?
☛ What safety precaution measures do you take when installing or maintaining a plumbing system?

48. Face to Face Plumbing interview questions:

☛ How do you stimulate the sharing of further information?
☛ Give examples of ideas you've had or implemented.
☛ What do you consider your strengths and weaknesses as Plumbing Foreman?
☛ What type of salary are you looking for?
☛ Example of a time you have placed yourself in a leadership position.
☛ What are your long-term goals or Plumbing Foreman career plans?
☛ How do you make the decision to delegate work?

49. First Plumbing interview questions:

☛ What is your expected salary?
☛ Why are you leaving your present job?
☛ When did you last update your Plumbing Foreman education?
☛ What is a typical career path in this job function?
☛ Give me an example of when you have done more than required in a course.
☛ Your greatest weakness in school or at work?
☛ What was your major disappointment?

This is your chance to show your depth and dimension as a person.
Review the company's mission statement to understand how it addresses its long-term goals and the way it does business. The interviewer wants to see why you think you are the best person for the job.

50. Suppose I were to ask a previous supervisor about your performance, what would they say?

That I am enthusiastic and a good listener, Learner and a good plumber.

51. Tell me what are the advantages for installing steel plumbing underneath a sink? In what cases would you do it?

The advantages to using steel would be more or less for industrial areas where chemicals will be used.

52. Suppose I have need Rooter Service, do I have to call one of those national rooter chains?

No. We would recommend that you call a qualified, trained and certified plumber. Why? The water pipes inside and outside your home can be very delicate. In an older home, pipes wear thin from the inside out making them appear sound but in fact are very brittle. An unqualified and unskilled rooter company could cause extensive damage to your pipes and your home. The highly trained and certified technicians at Blue Mountain will take the time to properly diagnose the problem and utilize the right tools and techniques to solve the problem. Should there be an issue of a broken pipe or other unforeseen problems after we begin the job, our expert plumbers can immediately take action. Can the other guys? We're not sure and we don't recommend that you take a chance.

53. Tell me a project or task you performed and found particularly difficult? How did you manage it?

A renovation project – I did last year – was particularly challenging because the building had been damaged in an earthquake and had multiple concealed leaks. To add to the problem, blue prints of the building's plumbing were unavailable. It took me a week to figure out the exact piping, come up with a blue print and determine the damages only. I then issued cost estimation and the whole project was completed in another 2 weeks.

54. Suppose a customer needs a new toilet installed, you remove the old one and find the floor to be rotting all around the toilet, what do you do?

If the floor around the flange and wax ring is that bad, and I felt it to be unsafe, I see what I could do to fix and replace the floor that is rotting. If I feel that the floor is rotting that bad, and a lot of it needs to be replaced, first I would call my boss and see if he wants me and other employees to take on the job, or if I should recommend a company that can do a good job with the floor.

55. Suppose you installed a copper pipe next to the shower head, and realized you ran out of fasteners, knowing this will create a problem ten years down the road, what do you do?

Try make it as leak proof as possible and inform my boss and let him make the decision due to its him signing of the work because im nota cert plumber yet.

Download Interview PDF

56. Explain me have you ever installed a shower with multiple shower heads? How did you keep water pressure high?

keep the size of the water supply line 3/4 size all the way up until you tie-in to the valve for maximum water volume and pressure.

57. Explain me when I Run The CWM My Toilet Bubbles/Overflows or My Shower Overflows?

The washing machine line could be connected to close to the “suds rinse zone”, meaning the washer waste ties into the waste or soil line of another fixture to close downstream from the problem fixture. What is happening is the water is rushing by the suds at a high velocity, pushing ahead of the suds. Because the fixture is the closest place of relief, the suds will come up into the fixture, even a toilet. The code requires that a washing machine, kitchen sink, shower, and dishwasher line be connected at least 5′ downstream from any fixture branch. This could be just one of many possibilities for the bubbling and backup.-Bill Dwight,

58. Tell me what would you like to be doing five years from now as Plumber?

The safest answer contains a desire to be regarded as a true professional and team player. As far as promotion, that depends on finding a manager with whom you can grow. Of course, you will ask what opportunities exist within the company before being any more specific: “From my research and what you have told me about the growth here, it seems operations is where the heavy emphasis is going to be. It seems that's where you need the effort and where I could contribute toward the company's goals.” Or, “I have always felt that first-hand knowledge and experience open up opportunities that one might never have considered, so while at this point in time I plan to be a part of [e.g.] operations, it is reasonable to expect that other exciting opportunities will crop up in the meantime.”

59. Do you know what is Eductor?

Eductor is a device that utilizes a nozzle and throat, fitted in a stream of water to build a partial vacuum to draw liquid or air into the stream; normally used to draw regeneration chemicals into an ion exchange water treatment system, like deionizer or softener.

60. Do you know what is Angle Stop?

Angle stop is a shutoff valve between the water supply pipe and the fixture it supplies. It is used to shut off water to a fixture in case of failure, repair or leakage.

61. Tell me what is the primary step to unclog any blockage in the pipes?

First and primary technique to unclog the blockage is to pour hot water through the pipes. If the blockage still remains then, you need to use other options.

62. Tell me do you want to own your own plumbing business in the future?

Yes, like I said earlier if I cannot work anymore, physically, do to old age or whatever it may be I would love too. If I am working, I would only open a business if I had a good partner I could trust.

63. Tell me do you have any experience installing water based heating systems?

I have had experience installing a hot water system, but the courses I studied didn't go into depth , nd also didn't include other water based heating systems.

64. As you know we run a credit report and background check are you ok with that?

My score is 849 and my background is clean, go for it.

65. Tell me what training do you have in plumbing?

I have been at college for 3 years wile completing level 1, 2 and a plumbers mate course which has trained me in several aspects including some gas, fitting a bathroom, using a power flusher, and working with different pipes.

66. Suppose a customer complains their house has too little water pressure, what steps would you take to fix this problem?

first I would see if they had a pressure reducing valve and see if it needed to be adjusted or replaced. If no reducing valve then i would check all the faucets in the rest of the house to eliminate the possibility of maybe a bad or clogged faucet. Lastly if all else fails recommend a pressure increasing pump.

67. Please explain have you ever installed PEX plumbing in a concrete floor?

Not in concrete floor, but I have helped run pex tubing a few times, just not in a concrete floor.

68. Explain me what is referred as Building Drain?

The lowest point in a drainage system where the interior drainage pipe meet and are conveyed into the sewer is referred as Building Drain.

69. Tell me what is the home remedies to clear clogged drain?

The home remedies to clear clogged drain is:

• Take half a cup of baking soda and pour down the drain, and then pour half a cup of vinegar. After 15 minutes, flush out the drain with hot water
• Add equal parts of salt, vinegar and baking soda. After one hour pour hot water into it
• Add half a cup of salt and equal amount of baking soda, sprinkle it into the drain and then flush it with hot water

70. Tell me how can you avoid bathroom plumbing maintenance?

To avoid bathroom plumbing maintenance you can use the following tips

• Once a week flushes out the drainage pipes with hot water
• Apply pipe shield to drain lines once each month to keep soap scum building up and causing clogs
• To prevent further damage to the fixtures and faucets repair leaky faucets
• Showers and tubs should be fitted with strainers that can catch hair and soap chips
• Use vinegar to remove mineral deposit in your shower head, by placing a vinegar in a plastic bag and leave it over the shower head overnight. Take only 1 cup of vinegar.
• Throw the waste in wastebasket like tissue paper, cotton ball, etc.

Download Interview PDF

71. Explain me one downside of a conventional water heater. Would you suggest an alternative?

While the conventional water heating system is in a league of its own, the fact that energy is being consumed constantly is a definite downside to using one. If saving energy is what a client wants, then I would suggest a tank-less water heater that uses energy only when there is a requirement for hot water.

72. Do you know how to unclog a drain?

First step is to pass hot water from the pipes, if the issue persists, we use chemical drain openers and if those don't work then we go to manual methods and sometimes we need to scrape or even replace the whole piping or a section.

73. Tell me what are three positive things your last boss would say about you as Plumber?

It's time to pull out your old performance appraisals and boss's quotes. This is a great way to brag about yourself through someone else's words: “My boss has told me that I am the best designer he has ever had. He knows he can rely on me, and he likes my sense of humor.”

74. Tell me what is Delta Faucet Repair?

You can buy a Delta single handle faucet repair kit with a tool for maybe five to seven bucks. It has all the instructions and is very easy to do.

75. Tell me toilet Leaks at Base in Moved Toilet Location or New Floor Install?

Is the top of the flange even (or close to even) with the finished floor? If it to low – then use two wax rings. One regular wax ring on the bottom and one (or more) with the plastic horn insert on top. ) I have seen leaks like you describe if the glued flange is not really glued in all the way. Take a look at that – if your floor and flange is flush. Sometimes you need to shim the toilet if the floor is uneven or the flange is to high.

76. Explain me your salary requirements as Plumber?

Find out what the salary is for the job is that is possible ahead of time. If there is no salary posted then do some research. Find out what the market is paying and what you are worth. Make a reasonable salary offer based on this information. Do your best to avoid making a salary offer if you can. You can ask the employer if they have a salary range they plan to pay the person in this position.

77. Tell me why do you want to work as Plumbing supervisor for this organisation?

Being unfamiliar with the organisation will spoil your chances with 75% of interviewers, according to one survey, so take this chance to show you have done your preparation and know the company inside and out. You will now have the chance to demonstrate that you've done your research, so reply mentioning all the positive things you have found out about the organisation and its sector etc. This means you'll have an enjoyable work environment and stability of employment etc – everything that brings out the best in you.

78. Tell me have you ever dealt with a difficult customer? Explain the situation?

2 years back when I worked as a journey man, we received a call. I and the senior journeyman went to resolve the issue. There was in in-wall leakage and we had to replace the piping. The customer insisted that we repair it. It took a lot of time to explain to the customer that the old piping was irreparable and even if we managed to fix it, we wouldn't get the pressure right. With practical demonstrations we were able to convince him but he was very pleased by the work at finish.

79. Explain me have you ever had to install a shower with multiple shower heads? If yes, how did you manage to keep the water pressure high?

Yes, I have installed showers with multiple shower heads. This does pose a problem with water pressure but it can be managed by installing a pressure pump which can cater to several showers depending on its gauge and size.

80. Explain me what pre-caution a plumber could take for health and safety purpose?

• Avoid awkward body positions, and take break every 30 minutes
• Learn safe lifting techniques
• Wear appropriate footwear and gloves while handling sewage plant or metal pipes
• Keep tools and equipment's in working condition, to avoid any unexpected accident due to inoperative tools
• To avoid electric shock use only power tools that can be used in a wet environment and have GFCI (Ground fault circuit interrupter).
• Keep work area clear

81. Tell us what is the first thing you look at before you design a plumbing system?

The first thing that I study is the building blueprint. This gives me an idea on the type and size of pipes that I need to use and procedures that I need to follow to design and eventually implement a plumbing system.

82. Why did you leave your last job as Plumber?

Whatever the situation was from your previous job, you should always answer this question with a positive and enthusiastic response. If the reason for leaving your last job was redundancy, then you should talk about how your company had to restructure, instead of focusing on your own personal situation.

Under no circumstances should you criticise your previous employer, as this will appear unprofessional.

83. Please explain a difficult situation you have overcome in the workplace?

Conflict resolution, problem solving, communication and coping under pressure are transferable skills desired by many employers.
Answering this question right can help you demonstrate all of these traits.

• Use real-life examples from your previous roles that you are comfortable explaining
• Choose an example that demonstrates the role you played in resolving the situation clearly
• Remain professional at all times – you need to demonstrate that you can keep a cool head and know how to communicate with people

84. Do you know what is Gas HWT Height?

Gas HWT have to be at least 18″ off the floor because combustible fumes *sink* and for air intake.

85. Tell me what is Claw Foot Tub Faucets?

These faucets are special to CFTs they have 2 3/8″; centers. Some units have 1/2″; and some have 3/4″; water connections at the back. The 3/4″; needs special CFT supply pipes. Most older faucets are not code and it is still easy to buy non-code faucets. The code is that the faucet spout must have a gap of at least 1″; between the top of the tub rim and the bottom of the spout – that's so bath water in the tub cannot siphon back into the drinking water supply.

Download Interview PDF

86. Tell me can Clogged Vents Stop Up Drains?

Yes and no. A toilet with no vent may not flush the contents out of the bowl, but any other drain will work without a vent. (NOTE: the code is that all fixtures shall be vented). Only twice in 15 years has the vents been the cause of a drain backup. In one case it was roofers who stuffed the old roofing material down the vents and the other was just a stray piece of wood. In both cases the material made its way down into the drain pipe and had to be removed. No amount of *vent cleaning* would have done any good.

87. Suppose high Pressure Makes My Toilet Run (with new ballcock)?

If your water pressure is so high that it leaks past a Fluidmaster 400A or another new ballcock (aka: “toilet fill valve”) – then you NEED a pressure reducing valve. Other water pipes, connectors, clothes washing machine hoses and your water heater could leak or break. Best to get a pressure regulator if your pressure to the house is more than 60 pounds (80 is code throughout most of the U.S.).

88. Tell me what are your weaknesses for Plumbing supervisor position?

Try not to be too critical when answering this question. Instead, pick one of your weaknesses and try to turn it into a positive.

For example, you could be a perfectionist, which means that you sometimes take longer on tasks, but you make sure that they are completed to a high quality. It is important to make a negative into a positive as it doesn't make you appear overly critical and shows you can reflect on your own performance.

89. Do you know what are pipe dopes?

Pipe dopes are used to create water tight seals at joints.

90. Do you know why is hard water considered bad?

Hard water can be damaging to the skin, clothes and even to the building. It has great corrosive powers which leads to dry skin conditions, pipe scaling, excessive soap consumption and deterioration of fixtures.

91. Tell me what is the common reason for sump pump failure?

Sump pump is usually used in the basement area to remove the accumulated water during flood. Moreover, there are few reason it may stop working all of sudden.

• Switching problem
• Accumulation of excess debris, interfering with the switching
• The pump can move inside the basin, and that may interfere with the switching mechanism

92. Explain me what skills does a plumber should have?

• Problem solving
• Critical thinking
• Listening and paying attention to instruction
• Decision making
• Co-coordinating
• Technical knowledge related to pipe fitting

93. Tell me do you have your own plumbing equipment?

I have all the basic things. Hammer, pipe wrenches, screwdrivers, ruler, pencil, players, adjustable wrenches.

94. Tell us what license do you have as a plumber?

As of the moment none but I will take some proper classes for plumber to upgrade my standard.