Title: Discussion Board
Course: HET 293 - HVAC and Building Codes > Section: HET 293 - HVAC and Building Codes

This week we will be covering Foundations in chapter 5. Please read chapter 5 and log in the discussion board and answer my post. Find websites to help you gain a deeper understanding of foundation codes.

HVAC contractors are one of the first workers on a new construction job and one of the last construction workers to complete their task with the job is completed. HVAC contractors start up and test the equipment when everything is accomplished. Many times the ductwork is buried or goes through the walls of the foundation; therefore, it is important to know what is required of these craftsmen.

1. Why is it necessary to have the footings below the frost line? What is the frost line in the Chicago area?

2. Do you think the ductwork below the foundation floor should be insulated?

3. Why should the foundation wall be supported by a footing?

4. What should determine the size of the footing?

In the chapter 5 we discussed foundations of a home, also this week we will converse building framing. The foundation supports structure of a home which includes the framing. During construction of a home, the HVAC equipment and ductwork is supported by the framing of the home. It will become very important to understand the weight bearing capacities of the structure. By cut openings in the framing structure, it may cause future issues with the home. I am posting a chart for the class to view of framing codes and how they can use it to understand the purposes of framing codes.

1. If you personally had a chance to build a home or recommend the type of prefabricated I-Joists to a customer would you? Why?

2. What is the purpose of a bearing wall support?

3. Using a chart, joist spans not to exceed maximum number in feet if the installation of the joist is 16” on-center and using a 2” x 10”?

4. Cutting openings in joists, studs, and rafters can reduce its ability to support a load. What are some of the requirements in codes for penetrations in these support structure?