This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Gas pressure should be checked at the rooftop valve prior to installation. The gas line pressure for ... (Read 137 times)

sdfghj

  • Hero Member
  • *****
  • Posts: 552
on: Jul 24, 2018
Gas pressure should be checked at the rooftop valve prior to installation. The gas line pressure for natural gas in inches of water column should not exceed:
 
  A) 3.5 in WC. B) 5.0 in WC. C) 10.5 in WC. D) 2 psi.

Question 2

To ensure that the rafters or joists do not interfere with installation of the plenums on a curb-mounted rooftop unit:
 
  A) The roof curb must be square with the roof joists or rafters.
  B) The roof curb must be installed diagonal to the roof joists or rafters.
  C) The roof joists or rafters are cut out where the curb is installed.
  D) The plenums are fabricated in place with the roof joists or rafters passing through them.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

TheNamesImani

  • Sr. Member
  • ****
  • Posts: 334
Reply #1 on: Jul 24, 2018
Answer to Question 1

C

Answer to Question 2

A


sdfghj

  • Member
  • Posts: 552
Reply 2 on: Jul 24, 2018
Gracias!

ebonylittles

  • Member
  • Posts: 318
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.

Did you know?

In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.

Did you know?

If all the neurons in the human body were lined up, they would stretch more than 600 miles.

Did you know?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

Did you know?

For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

Exercise and Blood Pressure Exercise and Blood Pressure
Primary factors affecting blood pressure Primary factors affecting blood pressure
Pressure sores. Pressure sores.
Risk & Aseptic Processing - RABs Filling Line Risk & Aseptic Processing - RABs Filling Line
Effleurage to the entire area with moderate pressure as a finishing technique. Apply effleurage ... Effleurage to the entire area with moderate pressure as a finishing technique. Apply effleurage ...
Change in Blood Pressure through the Systemic Circuit Change in Blood Pressure through the Systemic Circuit
Video: Conjunctivitis

For a complete list of videos, visit our video library