Course Content
Loads and Limits
In this section we will cover the mechanics of roof loading on structural members. We will show how the plan reviewer or designer can determine the  dead loads of typical building materials. Additionally, we will show how roof live loads are determined from the code including ceiling live loads. We will also review the code limits for deflection of rafters and ceiling joists and how these limits affect the design process.
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Roof and Ceiling Loading and Deflection Limits
41:31
Loads and Limits
Conventional Roof Framing
We will review the conventional roof framing construction requirements that are provided in Chapter 8 of the residential code. We will look at the sizing of rafters and ceiling joists from the 2022 California Residential Code span tables along with the factors that a designer and plan reviewer needs to consider when determining the adequacy of members. We will also look at other member requirements including rafter ties, collar ties and ridge straps as well as the connection requirements for all members. Finally we will look at uplift connection requirements and how the plan reviewer and designer determine when additional connections are needed. We will also look at typical connectors from Simpson and MiTek that are available in the market today. We have provided a check list of the plan check items that are covered in this section in the document named 'Doc2: Notes and Guidelines' that is available on your dashboard. We have also provided a document named 'Doc1: Links and Resources' that provides active links to the resources covered in this section.
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Sizing of rafters and ceiling joists, rafter ties, collar ties, ridge straps, member connections and uplift connections
55:08
Conventional Roof Framing
Conventional Roof Framing – Part 2
This section covers the code requirements for blocking at bearing points to prevent out of plane rotation. We will also cover the requirements for bridging including the location where bridging is required, the types of bridging and the conditions under which bridging is required. Additionally we will look at the limits on notches, cuts and holes on roof framing members. We will also discuss the code requirements for conventional framing of openings. Finally, we will cover wood structural panels from conformance standards, structural properties, construction specifications and grade stamps. We will discuss what the plan reviewer needs to look for when reviewing wood structural panels used for roof framing applications. We have provided a check list of the plan check items that are covered in this section in the document named 'Doc2: Notes and Guidelines' that is available on your dashboard. We have also provided a document named 'Doc1: Links and Resources' that provides active links to the resources covered in this section.
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Requirements for blocking, bridging, notching and cutting, roof openings and wood structural panels
30:13
Conventional Roof Framing - Part 2
Plan Check Example – Conventional Roof Construction
This is a comprehensive plan review example for conventional roof construction. In this example, we are reviewing the roof framing drawings of a two story residence designed to meet the conventional construction requirements in the 2022 California Residential Code. We will go through all the framing requirements in the drawings provided to verify code compliance. We will also write comment for cases where deficiencies are observed. The drawings used in this example are available for download on your dashboard.
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Plan Check Example – Conventional Roof Framing
27:06
Plan Review of Manufactured/Engineered Trusses
This is a comprehensive lesson on the review of trusses. We have provided complete roof truss calculations (MiTek) for a one story detached residential accessory structure that is 35 feet by 28 feet. Additionally, we have provided engineered drawings showing the roof framing plan, the foundation plans and construction details. We are using engineered drawings so that we can include drag loads in the scope of our review. The trusses are engineered and include girder trusses, drag trusses, jack trusses as well gable trusses supporting mechanical equipment. We will introduce the plan reviewer to the layout of truss calculations and show how a plan reviewer can navigate the review of engineered trusses. We will show the items that the plan reviewer needs to consider when reviewing engineered trusses. The structural drawings and truss calculations used in this example are available for download on your dashboard.
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Plan Check Example – Manufactured/Engineered Trusses
38:41
2022 CRC Plan Check – Conventional Roofs and Manufactured Trusses
About Lesson

In this section we will cover the mechanics of roof loading on structural members. We will show how the plan reviewer or designer can determine the  dead loads of typical building materials. Additionally, we will show how roof live loads are determined from the code including ceiling live loads. We will also review the code limits for deflection of rafters and ceiling joists and how these limits affect the design process.

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