Unit 1

© 2006 ITT Educational Services Inc. CD230 Architectural Design & Drafting: Unit 1 Slide 1

Unit 1

CADD Part III

© 2006 ITT Educational Services Inc. CD230 Architectural Design & Drafting II: Unit 1 Slide 2

Construction Terms

• Footing Poured concrete base upon which the foundation

wall rests.

• Sheathing The rough boarding or covering over the framing

of a house.

• Soleplate The horizontal member of a frame wall


Construction Terms

• Grade beam A horizontal member that is between two

supporting piers at or below grade and that supports a wall or a structure above.

• Gable The triangular end of a gable-roofed house.

• Balloon frame A type of wood framing in which the studs extend

from sill to eaves without interruption.


Construction Terms

• Batting A type of insulation designed to be installed

between framing members.

• Specifications The written instructions that accompany a set of

working drawings.


Construction Terms

• Water closet A toilet.

• Built-up roof A roofing composed of layers of felt impregnated

with pitch, coal tar, or asphalt. The top is finished with crushed stone or minerals. It is used on flat or low-pitched roofs.


Construction Terms

• Casement window A window with one or two sashes that hinge on

their sides. They may open either in or out.

• Web The member between the flanges of a steel beam,

or the vertical and diagonal members between the top and bottom chords of a truss or bar joist.


Construction Terms

• Casing The trim around a window or door opening.

• Wythe Pertaining to a single-width masonry wall.

• Wainscot The surfacing on the lower part of an interior wall

that is finished differently from the remainder of the wall.


Construction Terms

• Cavity wall A masonry wall having a 2" air space between

brick wythes.

• Rafter A roof structural member running from the wall

plate to the ridge. There are jack, hip, valley, and common rafters. The structural members of a flat roof are usually

called roof joists.


Construction Terms

• Valley rafter The diagonal rafter at the intersection of two

intersecting, sloping roofs.

• Ridge The top edge of a roof where two slopes meet.

• Ridgeboard The highest horizontal member in a gable


Construction Terms

• Chord The lower horizontal member of a truss.

• Run The horizontal distance of a flight of stairs, or the

horizontal distance from the outer wall to the ridge of a roof.

• Rise The vertical height of a roof or stairs.


Construction Terms

• Pitch The slope of a roof, usually expressed as a ratio.

• Plywood A relatively thin building material made by gluing

layers of wood together.

• Post-and-beam construction A type of building frame in which roof and floor

beams rest directly over wall posts.


Construction Terms

• Column A vertical supporting member.

• Concrete masonry unit (C.M. U.) A concrete block extruded from cement,

aggregate, and water

• Plumb Said of an object when it is in true vertical position

as determined by a plumb bob or a vertical level.


Construction Terms

• Coping A cap or top course of masonry on a wall to

prevent moisture penetration.

• Cornice The molded projection of the roof overhang at the

top of a wall.

• Nominal size The size of lumber before dressing, rather than its

actual size.


Construction Terms

• Crawl space The shallow space below the floor of a house built

above the ground. Generally, it is surrounded with the foundation

wall.

• Nonbearing wall A wall supporting no load other than its own

weight.


Construction Terms

• Bearing wall A wall that supports a weight above in addition to its own

weight.

• Curtain wall An exterior wall that provides no structural support.

• On-center A method of indicating the spacing between framing

members by stating the measurement from the center of one member to the center of the succeeding one.


Construction Terms

• Partition A wall that divides areas within a building.

• Blocking Small wood pieces in wood framing to anchor or

support other major members.

• Flitch beam A built-up beam formed by a metal plate

sandwiched between two wood members and bolted together for additional length.


Construction Terms

• Floor joist Structural member of a floor.

• King post The center upright strut in a truss.

• Moisture barrier A sheet material that retards moisture penetration

into walls, floors, ceilings, and so on.

Documents

Unit 1