Master Plumber Exam Plumbing Codes and Standards 4

Question 1

Under the IPC, which of the following water heater installations requires a seismic strap in Seismic Design Category C or higher?

Accepted Answer

All water heaters regardless of fuel type

Answer

The IPC requires seismic strapping for all water heaters in Seismic Design Categories C, D, E, and F, regardless of fuel type or size.

Question 2

Per the IPC, what is the maximum water pressure allowed at any plumbing fixture in a building?

Accepted Answer

80 psi

Answer

The IPC limits the maximum static pressure at any fixture to 80 psi; if street pressure exceeds this, a pressure-reducing valve must be installed.

Question 3

According to the IPC, what is the minimum flow rate required at a lavatory faucet for public use?

Accepted Answer

1.0 gpm

Answer

The IPC requires public lavatory faucets to deliver a minimum flow rate of 0.5 gpm but caps them at 0.5 gpm per the WaterSense standard; however the minimum for general lavatory supply is 1.0 gpm.

Question 4

Under the IPC, which type of pipe joint is prohibited in concealed locations for water supply piping?

Accepted Answer

Flared joints

Answer

Flared joints are not approved for use in concealed locations under the IPC because they can loosen over time and require access for inspection.

Question 5

Per the IPC, what is the minimum number of plumbing fixtures required for a single-occupant toilet room?

Accepted Answer

One water closet and one lavatory

Answer

The IPC requires at least one water closet and one lavatory in a toilet room serving a single occupancy.

Master Plumber Exam Practice Test

Master Plumber Exam Practice Test

Master Plumber Exam Plumbing Codes and Standards 4