Post on 19-Jan-2016
21Building Sections
Chapter
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© Goodheart-Willcox Co., Inc.
Building Sections
Building sectionsVertical “cuts” or “slices” through a structure
Longitudinal Building SectionRuns across the longest dimension of a building
Transverse Building sectionRuns perpendicular to longitudinal building sections
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© Goodheart-Willcox Co., Inc.
Purpose of Building Sections• Illustrate type of construction such as foundation types,
walls, and roof construction• Give vertical dimensions and provide information about
size of structural components• Provide important information about materials and material
sizes• Inform contractor or builder of special or unconventional
construction methods or techniques• Show specific materials to be used
Permission granted to reproduce for educational use only.
© Goodheart-Willcox Co., Inc.
Types of Building Sections
• Full building sections• Partial building sections• Wall sections• Detail sections
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© Goodheart-Willcox Co., Inc.
Full Building Section Information
• Overall height dimensions and relationships• General building materials used• Foundation information• Special or unusual construction techniques and
methods• Drawn at same scale as floor plan
Permission granted to reproduce for educational use only.
© Goodheart-Willcox Co., Inc.
Full Building Section
Permission granted to reproduce for educational use only.
© Goodheart-Willcox Co., Inc.
Partial Building Section Information
• Shows part of structure in more detail• Cuts through half or more of structure, but not its
entire length• Drawn at a larger scale—usually 3/8″ = 1′-0″ or
larger
Permission granted to reproduce for educational use only.
© Goodheart-Willcox Co., Inc.
Partial Building Section
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© Goodheart-Willcox Co., Inc.
Wall Section Information
• Cuts through only one (typically exterior) wall• Shows foundation system, wall system, roof
system at one location in structure• Shows more specific detail than any other type of
building section• Usually drawn at same scale as floor plan
Permission granted to reproduce for educational use only.
© Goodheart-Willcox Co., Inc.
Wall Section
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© Goodheart-Willcox Co., Inc.
Typical and Specific Sections
• Typical section– Represents features or sizes that are used in many
different places in structure
• Specific section– Shows feature, method, or technique that is used
only once
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© Goodheart-Willcox Co., Inc.
Specifying Building Section Location
Section marks are used to indicate where sections are
being taken or cut.
Because of the complexity of architectural drawings cutting
plane lines are generally omitted
Only the arrow indicating the direction of sight of the
section view is shown
Permission granted to reproduce for educational use only.
© Goodheart-Willcox Co., Inc.
Identifying Sections
First section is labeled A–A
Second section is labeled B–B
Actual section drawings are labeled Section A–A, Section B–B, and so on
The upper letter indicates the name of the section on the sheet
The lower number refers to the sheet where the section view is drawn
Permission granted to reproduce for educational use only.
© Goodheart-Willcox Co., Inc.
Preparing to Draw Building Sections
• Questions to be answered include:– Foundation information?– Existing grade?– Heights from finished floor to finished ceilings?– Rough openings of doors and windows?– What type of roof construction?– What kind of exterior materials?– What type of soffit?
Permission granted to reproduce for educational use only.
© Goodheart-Willcox Co., Inc.
CADD: Full Building SectionCollect essential size information
Select or create section layers
Draw footing and foundation wall
Locate and draw basement slab
Position and draw grade line
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© Goodheart-Willcox Co., Inc.
CADD: Full Building SectionLocate and draw floor joists, ceiling joists and wall and roof structures
Use actual sizes rather than nominal sizes
Add details and material hatch patterns
Add dimensions and notes
Add scale and title on appropriate layers
Review your work
Permission granted to reproduce for educational use only.
© Goodheart-Willcox Co., Inc.
CADD: Full Building
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© Goodheart-Willcox Co., Inc.
TCADD: Detail Section (Typical)
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© Goodheart-Willcox Co., Inc.
TCADD: Detail Section (Typical)
Permission granted to reproduce for educational use only.
© Goodheart-Willcox Co., Inc.
TCADD: Detail Section (Typical)