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HVACR116 – Trade Skills

SectionsSections

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ObjectivesObjectives

• After completing this unit, you will be able to perform the following tasks:o Find and explain information shown on section viewso Find and explain information shown on large-scale

detailso 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 viewso Find and explain information shown on large-scale

detailso Orient sections and details to the other plans and

elevations

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IntroductionIntroduction

• Larger-scale drawings and section views show how individual pieces fit togethero 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 togethero These drawings are grouped together in the drawing set

Referred to as sections and details

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

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SectionsSections

• Nearly all drawing sets include a typical wall sectiono Section view of one wall, or a full building section

Full sections are named by imaginary cut directiono Transverse sections (i.e., cross sections) are taken from

an imaginary cut across the buildings widtho Longitudinal sections are taken lengthwise

• Nearly all drawing sets include a typical wall sectiono Section view of one wall, or a full building section

Full sections are named by imaginary cut directiono Transverse sections (i.e., cross sections) are taken from

an imaginary cut across the buildings widtho Longitudinal sections are taken lengthwise

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Sections (cont’d.)Sections (cont’d.)

Figure 8–2. Transverse section.

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Sections (cont’d.)Sections (cont’d.)

Figure 8–3. Longitudinal section.

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Sections (cont’d.)Sections (cont’d.)

• Special features require other drawingso Sections view show special construction

• Special features require other drawingso Sections view show special construction

Figure 8–4. Special section of ventilated ridge. Courtesy of W. D. Farmer.

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Sections (cont’d.)Sections (cont’d.)

Figure 8–5. A section in plan. Courtesy of W. D. Farmer.

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Other Large-Scale DetailsOther Large-Scale Details

• Information can be conveyed without showing interior constructiono A large scale may be all that is needed

• Information can be conveyed without showing interior constructiono A large scale may be all that is needed

Figure 8–6. Cabinet elevations.

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Other Large-Scale Details (cont’d.)Other Large-Scale Details (cont’d.)

• Details may be best shown by combining elevations and sections or using isometric drawings

• Details may be best shown by combining elevations and sections or using isometric drawings

Figure 8–7. Fireplace details. Courtesy of W. D. Farmer.

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Other Large-Scale Details (cont’d.)Other Large-Scale Details (cont’d.)

Figure 8–8. Isometric section. Courtesy of W. D. Farmer.

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Orienting Sections and DetailsOrienting Sections and Details

• Some sections and details are labeled as typicalo Used throughout most building

• Sections and details referring to a specific location include a reference indicating where it came fromo Larger source drawing uses a cutting-plane line

• Some sections and details are labeled as typicalo Used throughout most building

• Sections and details referring to a specific location include a reference indicating where it came fromo Larger source drawing uses a cutting-plane line

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Orienting Sections and Details (cont’d.)Orienting Sections and Details (cont’d.)

• Figure 8-9:o Section view or detail of construction at skylighto Little flag indicates view directiono Bottom label includes drawing informationo Reference mark indicates where detail drawing is shown

• Figure 8-9:o Section view or detail of construction at skylighto Little flag indicates view directiono Bottom label includes drawing informationo Reference mark indicates where detail drawing is shown

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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.