Interior Design Construction Exam 2

Softwood

simple cell structure

Hardwood

complex cell structure

Milling

shaping by using a rotating cutting tool

Plain Saw

most efficient use of material

Quarter Saw

most uniform materials (more waste)

Types of Softwood - Board

1” - 1-1/2” thick, 2” and wider graded for appearance

Types of Softwood - Dimensional Lumber

2”- 4” thick, 2” and wider, graded for strength and appearance

Types of Softwood - Timber

5” by 5”, graded on strength, structural lumber

Dimensional Lumber Sizes - 2×4

1 1/2” x 3 1/2”

Dimensional Lumber Sizes - 2×6

1 1/2” x 5 1/2”

Dimensional Lumber Sizes - 2×8

1 1/2” x 7 1/4”

Dimensional Lumber Sizes - 2×10

1 1/2” x 9 1/4”

Dimensional Lumber Sizes - 2×12

1 1/2” x 11 1/4”

Dimensional Lumber Sizes - 4×4

3 1/2” x 3 1/2”

Dimensional Lumber Sizes - 1×4

3/4” x 3 1/2”

Plate

horizontal

Joist

horizontally rotated so larger dimension is up and down

Stud

runs vertically

Actual Size

1×4, 2×4, 2×6, 2×8

Particle Board

made with wood particles - chips, flakes, sawdust

Regular Gypsum Board

1/2” thick - wood frame construction

5/8” thick - durability and fire resistance

Type X Gypsum Board

fire rated assemblies

contains additives to up fire resistance rating

Water-resistant gypsum board

used in locations exposed to moderate moisture

Impact-resistant gypsum board

provides greater resistance to indentation and penetration

Core board

1/4th thick panel that is used for shaft walls and solid gypsum board partitions

Corner beams

reinforce external angles

Reveal

variety of moldings, allows gypsum board, to crack in specific area

Expansion joint

allows gypsum paster to expand as it hardens

Drywall “J” Runner (or beam)

used to finished appearance to the edge of the gypsum board

Gypsum Board finish - 4

adds 3rd coat of compound, designed for surfaces to be finished with flat paint, light textures, or thin wall coverings

Gypsum Board finish - 5

highest level of finish, adds thin skim coat or joint compound over entire surface, recommended for gloss/semi-gloss paint