Building Materials - Wood Part 2

70問 • 1年前

問題一覧

What are the two primary methods of increasing wood's fire resistance

Coating and Impregnation

According to the text, which of the following is a limitation of using coatings or layers of protective material for fire resistance

They are not durable when exposed to weather.

What is the main characteristic of chemicals used for wood impregnation in fire resistance treatment

They do not support combustion

Which of the following is a potential drawback of water-soluble fire retardant chemicals used in coatings

They can leach out over time

Which of the following is NOT mentioned as a common chemical used for impregnating wood to make it fire-resistant

Sodium Chloride

Which type of treated lumber and plywood uses Wolman salts as a preservative?

Wolmanized

Tanalith G Wood Preservative salts are used in which type of treated lumber and plywood

Tanalized

What is the preservative used in Permanized lumber and plywood?

B-S-25

Which of the following is a type of pressure-treated lumber and plywood mentioned

Boliden

Wood composites are made from a mixture of:

Wood and other materials

What is the typical size of wood composite sheets?

1220mm x 2440mm (4’ x 8’)

What are the three categories of Wood panels

Veneered panels, Non-veneered panels, Composte panels

What is the most common type of veneered wood panel

Plywood

What is the typical thickness range of plywood panels

0.25" - 0.75" (6 mm - 18 mm)

If you need plywood for a sub-floor, which thickness would be MOST appropriate

1" (25mm)

For double wall partitions, which thickness(es) of plywood are mentioned as suitable?

Both 3/16" (4.5mm) and 1/4" (6mm)

What the standard size of plywood (English System)

3'-0" x 6'-0" (900mm x 1800mm) & 4'-0" x 8'-0" (1220mm x 2440mm)

What is the standard plywood thickness for drawers and shelves

3/8" (10mm) and 1/2" (12mm)

What is the standard plywood thickness for drawers, shelves, cabinet and closet doors

3/4" (19mm)

Panels are reconsituted wood fibers bonded together to form a panel

non-veneered panels

A type of board wait long strand-like wood particles compressed or glued together into 3 to 5 layers on strands oriented in perpendicular directions in each layer

oriented strand board (OSD)

This is a board with large flakes of wood compressed or bonded together into a single layer

waferboard

A type passport with a small particles compressed and bonded into a single layer. Made small wood ships and waste materials including cotton stalk, rice straw, bagasse, conventional wood chips and sawdust that have been pressed and glued together

particleboard

Also called Hardboard, after the man who inverted it

Masonite

This is a paneling material made by reducing and refining wood chips into small, threadlike fibers, and then pressing can under heat in hydraulic pressure into dense, smooth and very rigid panels

Hardboard

The type of hard board is light brown in color and has a fairly hard, smooth surface on one side and a screened impression on the other side. It is flexible and easy to bend

standard hard board

This hard board is somewhat denser than the standard hand board but in not as dense as the tempered types

panel hard board

This is the densest type of hard board, It is dark brown in color, brittle and stiff with improve matching qualities and greater resistance to moisture and water penetration making it ideal for exterior use

tempered hard board

What is the usual size of hard board panels

4'-0" x 8'-0" (1220mm x 2440mm)

What are the Brand names of hand board

Lawanit, Lawanex, Masonite

Made by bonding together wood particles with and adhesive under heat and pressure to form a rigid board with a relatively smooth surface, often faced with veneer. It's made by binding phenolic resin or urea formaldehyde glue

chipboard

A chipboard may be un-sanded, sanded on one side or both sides

plain planes

A chipboard, have one side of grooved surface at even or random spacing

patterned panels

A widely used for self-assembly furniture, work surfaces, wall linings and partitions

veneered chipboard

Is often used as a basis of a carcasses of kitchen furniture, worktops, and floorings

high-density chipboard

The ideal panel sizes of chipboard for interior and exterior

2'-0" x 4'-0" (600mm x 1220mm), 4'-0" x 4'-0" (1220mm x 1220mm), 4'-0" x 8'-0" (1220mm x 2440mm)

Are finishing materials mades from vegetable for wood fibers such as corn or sugarcane stalks glued under heat and pressure and then pressed into sheets

fiberboards

What is the thickness of fiberboards

1/2" (12mm), 3/16" (4.5 mm), 1/4" (6mm), 3/4" (19mm)

What is the thickness of chipboard

1/4" (6mm) - 1" (25mm)

The generally available panel sizes of fiberboard

4'-0" x 8'-0" (1220mm x 2440mm)

Is manufactured from wood, straw, bagasse pulp pressed into boards with or without holes or slots

Acoustic fiber board

What is the thickness of acoustic fiber board

1/2" to 2" (12 to 50mm) in 1/2" (12mm) increments

What are the fiber board brands

Celotex, Canex, Hamosote, Philtex, Bonotex

This is a non-combustible building board with a gypsum core enclosed in tough, smooth paper. It is designed to be used without addition of plaster for walls, ceilings or partitions. It is extensively used in “dry-wall”

gypsum board

for coverstrip jointing; visible butt - jointed panelling with clamp fixing and free suspension

square edge (S.E)

for smooth seamless jointing; jointless wall and ceiling panelling

tapered edge (T.E)

Name the 2 edge designs of gypsum board

square edge, tapered edge

Name the Brands for the Gypsum Board

Boral, Elephant

What type of material is used for the surface layer on interior walls and ceilings, and what are some of its variations, such as the regular type with grey liner paper and special finish, the foil-backed type with aluminum foil for vapor barrier and insulation, and the predecorated type with a vinyl or paper sheet

wall board

This is used as base layer in multi-ply construction, where several layers of gypsum boards are desired for high fire resistance, sound control and strength in walls.

backing board

What type of material is used as a base in multi-ply, self-supporting (studless) gypsum wall construction to conserve space

Core board

What are the available thickness options for the backing board

1” (25mm) thickness, 2- factory-laminated, ½” thick layers

For use in fire-rated assemblies, this may be wallboard, backing board, or coreboard made more fire-resistant by addition of glass-fiber or other reinforcing materials

Type X gypsum board

This type comes with water-resistant gypsum core and water-repellant face paper. It maybe used as base for walls of bathrooms, showers, and other areas exposed to wetting.

Water-Resistant Backing Gypsum Board

This type comes with water-resistant gypsum core and water-repellant face paper. It maybe used as base for walls of bathrooms, showers, and other areas exposed to wetting.

Gypsum Sheathing

This type is used as a permanent form in the casting of gypsum concrete roof decks.

Gypsum Formboard

Is comprised of 72% Portland Cement, 20% mineralized cellulose fibers derived from recycled materials, and 8% calcium carbonate.

Fiber cement board

These are large structural wood members formed by gluing many layers of thinner wood together under pressure. It include shoes, hangers, splines and other accessories

laminated lumber

This is a glue laminated timber of a large of large depth usually laminating 1.5" (37 mm) thick wood

GIulam (Glued Laminated Wood)

Is made of small wood chips and base materials including cotton stalk, rice straw, bagasse, conventional wood chips and sawdust that have been pressed and glued together.

Particle board

Consists of finished lumber which is further cut and processed at a lumber mill. Millwork includes doors, windows, mouldings, trim and other ornamental forms of wood.

Millwork

These are lightweight trusses assembled from 2" x 4" (37 mm x 87 mm) or 2" x 6" (37 mm x 137 mm) usually are for Light-frame residential roof construction with trusses to be spaced at 24" (61 cm)

Trussed Rafters

Which type of beam is made with a combination of dimension lumber and/or plywood

Plywood I-Beam/Box Beam

Which type of engineered wood is made of wood veneers oriented vertically with their grain running lengthwise

Laminated Veneer Lumber (LVL)

What is the typical depth and length of Parallel - Strand Lumber (PSL)

9.25" - 18" (23-46cm) depth and 30' (12.2 m) Length

What is the typical depth and length of Laminated Veneer Lumber (LVL)

5.5”–18” (14–46 cm) depth, 30’ (12.2 m) length

Which type of engineered wood is made of long strand-like wood particles oriented lengthwise and compressed/glued together

Parallel-Strand Lumber

Which type of joist is characterized by longer spans that exceed the capacity of solid lumber joists, using laminated veneer chords and a plywood/OSB web

I-Beam Joist

What is the typical depth and length of l- Beam Joist

9.25" - 24" (24-61 cm) Depth, 40' (12.2 m) length

Name the Wood defects

Knot, Pitch Pocket, Shake, Split, Check, Wane

Building laws Part 1

Mari Alberca · 100問 · 1年前

Building laws Part 1