1 HVACR116 – Trade Skills Sections

2 Objectives After completing this unit, you will be able to perform the following tasks: o Find and explain information shown on section views o Find and explain information shown on large-scale details o Orient sections and details to the other plans and elevations After completing this unit, you will be able to perform the following tasks: o Find and explain information shown on section views o Find and explain information shown on large-scale details o Orient sections and details to the other plans and elevations

3 Introduction Larger-scale drawings and section views show how individual pieces fit together o These drawings are grouped together in the drawing set  Referred to as sections and details Larger-scale drawings and section views show how individual pieces fit together o These drawings are grouped together in the drawing set  Referred to as sections and details

4 Figure 8–1. Typical sheet of sections and details for a small building

5 Sections Nearly all drawing sets include a typical wall section o Section view of one wall, or a full building section  Full sections are named by imaginary cut direction o Transverse sections (i.e., cross sections) are taken from an imaginary cut across the buildings width o Longitudinal sections are taken lengthwise Nearly all drawing sets include a typical wall section o Section view of one wall, or a full building section  Full sections are named by imaginary cut direction o Transverse sections (i.e., cross sections) are taken from an imaginary cut across the buildings width o Longitudinal sections are taken lengthwise

6 Sections (cont’d.) Figure 8–2. Transverse section.

7 Sections (cont’d.) Figure 8–3. Longitudinal section.

8 Sections (cont’d.) Special features require other drawings o Sections view show special construction Special features require other drawings o Sections view show special construction Figure 8–4. Special section of ventilated ridge. Courtesy of W. D. Farmer.

9 Sections (cont’d.) Figure 8–5. A section in plan. Courtesy of W. D. Farmer.

10 Other Large-Scale Details Information can be conveyed without showing interior construction o A large scale may be all that is needed Information can be conveyed without showing interior construction o A large scale may be all that is needed Figure 8–6. Cabinet elevations.

11 Other Large-Scale Details (cont’d.) Details may be best shown by combining elevations and sections or using isometric drawings Figure 8–7. Fireplace details. Courtesy of W. D. Farmer.

12 Other Large-Scale Details (cont’d.) Figure 8–8. Isometric section. Courtesy of W. D. Farmer.

13 Orienting Sections and Details Some sections and details are labeled as typical o Used throughout most building Sections and details referring to a specific location include a reference indicating where it came from o Larger source drawing uses a cutting-plane line Some sections and details are labeled as typical o Used throughout most building Sections and details referring to a specific location include a reference indicating where it came from o Larger source drawing uses a cutting-plane line

14 Orienting Sections and Details (cont’d.) Figure 8-9: o Section view or detail of construction at skylight o Little flag indicates view direction o Bottom label includes drawing information o Reference mark indicates where detail drawing is shown Figure 8-9: o Section view or detail of construction at skylight o Little flag indicates view direction o Bottom label includes drawing information o Reference mark indicates where detail drawing is shown

15 Figure 8–9. The elevation at the top indicates that the construction detail is drawing 2 on Sheet 7. The bottom drawing is that detail.