Advanced Construction: Sections

Topics: Technical drawing, Construction, Building engineering Pages: 11 (2329 words) Published: October 22, 2013
Week 4 Lecture Notes: Ch 10-11

Advanced Construction Documents
Week 4 Lecture Notes
Chapter 10: Sections
Section drawings take an imaginary slice through an object or building and give information on height, and relationships between floors, ceilings, spaces, walls, and in some instances details of specific contraction techniques.

Two or more sections are often cut at 90 degrees to one another to give additional information, unless the space or object is very simple.
The slice should be taken where it will BEST illustrate the relationship between significant components of an object or interior space.
It is ideally cut in a continuous straight plane but may be cut in jogs. The location of this cut is indicated on the floor plan or elevation (whichever is the base drawing) with a graphical symbol. (This symbol gives the section an identification number with an arrow that shows the direction the person is looking when viewing the final section drawing.) The arrow on the building section symbol shows the direction of the view. The top number is the section number, and the bottom one indicates the sheet it is drawn on.

Types of Section Drawings
Full Sections
Total Building
Interior Space
Partial section
An isolated area that need illustration
Building Section
Cut all the way through a building
Wall section
Only cut through a wall
Building Cabinet Section
Used to show built-0n 0or custom components within a space such as shelving
Interior Construction drawings: Sometimes sections & details are interchanged causing confusion
Section cuts THROUGH small portions of construction or objects Details are NOT always drawn in section
They may also include enlarged portions of the floor plan or elevation Scale of section drawing:
ID 312 Advanced Construction Documents Ch 10-11 Lecture Notes

Faculty: DeBauge-Harcum

Page 1

Week 4 Lecture Notes: Ch 10-11

Scale of Section Drawings:
Ranges from 1/8” to 3” - depends on size of the drawing paper, building, component, desire features to be shown.
Construction drawings ONLY show items or components of a space that are built-in or attached to the structure. Movable furniture is NOT shown in this type of drawing.
Drafting Standards
Section drawings are shown as cut through solid elements and space (voids) within an object or building.
Typical materials are shown in the text on figure 3-11 and include concrete and masonry, wood, metals, earth & stone, insulation, and miscellaneous such as glass, carpet and gyp board.
To differentiate these materials from adjacent construction or objects seen beyond the line weight is differed.
Building Sections
These are used to show the construction details of single or multi-level structures including the floors, walls, and ceiling/roof.
The location and nubr of building sections to be cut will depend on the clarity and amount of information to be shown about the structure and its features. Typically drawn at a scale of 1/8” or ¼.

Longitudinal Section: Cut through the length of a building
Transverse Section: Cut 90 degrees from the longitudinal
If a detail or other assembly (such as a wall) needs to be presented to convey more info, indicator marks are drawn on the building section for cross-reference to another location where this detail is drawn to a larger scale. Sections of Interior Spaces

Often resemble a building section I their composition but are more concerned with interior aspects of the assembly.
Do not always show floor thickness and other structural details Small objects may be keyed with a symbol on a section drawing and enlarged elsewhere.
Scale: 1/” or ¼” or even ½” as need for clarity
Wall Sections
This section is drawn at a large scale to show the specifics of an interior or exterior building wall.
Often keyed to main building section and permits designer to enlarge for detail More than one wall section is typically required
Shows typically floor and ceiling systems
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