BT5- PRELIMS (MOD1-6)

composite/ man made wood

what is the other term for engineered wood

building board

Any of the thin, broad, long, flat, plain or textured sheets

made of wood strips, strands, flakes, fibers, veneer,

chips, fibers, cement, or other composite material used

for paneling, ceiling, flooring, framing, carpentry,

formwork and other rough or finishing applications.

TRUE

T/F: you CAN create large panels of engineered wood from small diameter trees?

false

T/F: you CANT use small pieces of wood and wood that has defects in many engineered wood products especially

particle and fiber-based boards

False

T/F: engineered wood products are WEAKER AND MORE PRONE TO HUMIDITY INDUCED WARPING than equivalent solid woods.

Urea formaldehyde resin

The most common among the adhesives used in

engineered wood product manufacturing

Phenol-formaldehyde (pf) resins

Characterized by its yellow or brown color, used for

exterior-exposure wood materials

Melamine-formaldehyde (mf) resin

A white, heat and water resistant adhesive, and often

used in exposed surface products in more costly

designs

Methylene diphenyl di-isocyanate (mdi) or

polyurethane (pu) resin

Most expensive, generally has waterproofing ability

and do not contain formaldehyde

Casein Glue

Used in dry location but not exposed directly to rain or

water

Phenol-Formaldehyde resin Glue

Requires high temperature for curing; water resistant

Resorcinol-Phenol Formaldehyde

Expensive but have qualities necessary for durability

and water resistance.

Composite Panel

A wood panel product consisting of two face veneers

bonded to a reconstituted wood core.

Veneer

A thin sheet of wood rotary cut, sliced or sawn from a

log or flitch and used as a superior facing to inferior

wood or bonded together to form plywood.

Crossband

A layer of veneer immediately adjacent to and right

angles to the face plies in a plywood panel.

Core

The center of a plywood panel, consisting of veneers,

sawn lumber or composition board

Banding

The solid wood stock extending around the sides of a

veneered panel, concealing the core and facilitating the

shaping of the panel edges.

veneer based

identify what type of Engineered Wood Boards, Wood Composites

and Other Building Boards:

-PLYWOOD

-LAMINATED VENEER LUMBER

-PARALLEL STRAND LUMBER

Particle based

identify what type of Engineered Wood Boards, Wood Composites

and Other Building Boards:

▪ Oriented Strand Board (OSB)

▪ Laminated Strand Lumber (LSL)

▪ Waferboard

▪ Particle, Particleboard, Chipboard or Low Density

Fiberboard

▪ Strawboard

fiberboard

identify what type of Engineered Wood Boards, Wood Composites

and Other Building Boards:

▪ Insulating Board

▪ Medium Density Fiberboard (MDF)

▪ Hardboard

Mineral-bonded particleboard and fiberboard

identify what type of Engineered Wood Boards, Wood Composites

and Other Building Boards:

▪ Fibercement Board or Ficemboard

▪ Gypsum Board or Plasterboard

▪ Wood Wool Cement Board

▪ Asbestos Cement Board

▪ Wallboard

Plywood

A wood panel product

made by bonding veneers

together under heat and

pressure, usually at right

angles to each other.

Plymetal

Plywood clad on one or both sides with sheet metal

Plyboard

An engineered wood

board made of wooden

strips at its core and thin

veneers on both faces that

is compressed forming a

composite board.

is less denser

and water resistant than plywood

Laminated Veneer Lumber (LVL)

an engineered wood

product that uses multiple

layers of thin wood

assembled with adhesives

under heat and pressure

using a waterproof

adhesive; it is stronger, straighter and more uniform in

size and shape than most engineered wood material.

Parallel Strand Lumber (PSL)

A structural lumber

product made by bonding

long, narrow wood strands

together under heat and

pressure using a

waterproof adhesive; used

as beams and columns in

post and beam construction.

Oriented Strandboard (OSB)

A non-veneered wood

panel commonly used for

sheathing and as subflooring,

made by bonding

three or five layers of

long, thin wood strands

under heat and pressure

using waterproof adhesive.

Waferboard

A non-veneered panel

product composed of large,

thin wood flakes bonded

under heat and pressure

with a waterproof adhesive.

Particle board, Particleboard, Chipboard or Low

Density Fiberboard

non-veneered composite

wood panel product

consisting of cellulosic

particles made by bonding

small wood particles with a

synthetic resin under heat

and pressure;

4ft

Particle board, Particleboard, Chipboard or Low

Density Fiberboard are available in what width

8-16ft

Particle board, Particleboard, Chipboard or Low

Density Fiberboard are available in what length

Strawboard

A hardboard made of

compressed wheat straw

and processed at 350˚ to

400˚ F and covered with

a tough kraft paper.

2in

Structural Board thickness

4,6,7,8,9,10 ft

structural board available lengths

2in, 5ft, 4ft

insulation grade dimensions (thk,length, width)

Fiberboard

A fibrous-felted, homogeneous

panel made from

lignocellulosic fibers (usually

wood or cane) and having a

density of less than 490 kg/m3

but not more than 159 kg/m3.

Insulating Fiberboard

Components used for the manufacture of this type of

board are wood, sugar cane, asbestos and binder.

Insulating Grade

Grades of Fiberboard

Used as an insulating, decorative panels, decorative

ceiling tile, V-notch plaster base and roof insulation

with standard thickness ranging from 1/2", 5/8", 3/4"

and 1 inch.

Sheathing Grade

Grades of Fiberboard

Has both surfaces and all edges coated with asphalt

and other fibers impregnated with asphalt during

manufacture

Medium Density Fiberboard

a composite

panel product generally consisting of cellulosic fibers

mixed with a synthetic resin or other alternative

bonding element and joined together under heat and

pressure.

Hardboard

A very dense, felted, homogeneous panel made from

lignocellulosic fibers consolidated under heat and

pressure in a hot press to a density not less than 490

kg/ m3.

Standard Hardboard

Grades of Hardboard

A type of hardboard that is flexible and quite easily

bent, light brown with thicknesses of 1/8", 1/4",

3/16" and 5/16", 4 fett wide and lengths of 4, 6, 8,

10 12, and 16 feet.

Tempered Hardboard

Grades of Hardboard

Made by impregnated standard board with

tempering compounds of oils and resin and baking it

to polymerize the tempering material

Low Density Hardboard

Grades of Hardboard

Has low density and used for lightweight

application

1. Plain

2. Morocco Leather

3. Driftwood

4. Sawali

5. Grooved Board

6. Louver Board

7. Lace

8. Perforated or Display Board

9. Fine Weave

10. Stucco

11. Diamond Board

give Types of Hardboard

Fiber Cement Board

made of

fibers (timber slurry) and

Portland cement, quartz

sand, additives, etc.; a

versatile and durable

material used for exterior and interior application such

as ceiling, partitions, siding, etc.

Gypsum board or Plasterboard

sometimes referred to as

plasterboard that is made

typically made of a layer of

gypsum plaster pressed

between two thick sheets of

paper, then kiln dried. This material is used in dry wall

construction using metal furring and studs.

Gypsum Wallboard

Types of Gypsum Boards

A fireproof sheathing used for interior wall and

ceiling applications; characterized by a core of

gypsum covered on each side by heavy specially

made kraft paper. This material is also used for

partitions that do not require framing.

Gypsum Lath

Types of Gypsum Boards

Gypsum board with a gypsum core and heavy paper

on both sides; used as a base for plaster thus,

providing adhesion to plaster.

Gypsum Precast Roof Decking

Types of Gypsum Boards

Precast gypsum containing various types of fibers

for additional strength; made in either the square

plank (from 4 to 6 feet) or edged plank (10 feet

long).

Wood Wool Cement Board

A non-structural material

in low cost housing

constructions which may

be used for heat insulation

and sound absorption but

not as a fire-retardant

material.

Asbestos Cement Board

A dense, rigid board

containing a high percentage

of fibers bonded with

Portland cement

Wallboard

A rigid sheet composed of wood pulp, gypsum or other

materials; may be fastened to the building to provide

an interior surface finish; the long edges of the board

usually tapered to provide easy treatment of joints

when board is erected.

Corkboard

Made from cork granules and mixed with synthetic

resin, compressed and formed into sheets with

thickness ranging from 1 to 6 in. and baked under

pressure into rigid boards.]

Tempered Board

A hardboard impregnated

with a drying oil or other

oxidizing resin and baked

to improve its hardness

and moisture resistance

Peg Board or Perforated Board

Trademark for a brand

of tempered hardboard

having regularly

spaced perforations

into which hooks may

be inserted for the

storage or display of

articles.

Glue-laminated Timber

a type of structural timber product

composed of several layers of dimensioned lumber

glued together

Germany, Otto Hetzer

The first use of glued laminated timber was in ___________ in 1890 by ____________

Glued Built-up Members

These are structural members, the sections of which

are composed of built-up lumber, plywood or any

engineered wood in combination with lumber, all

parts bonded together with adhesives

Structural Glued laminated Timber

Any member comprising an assembly of

laminations of lumber in which the grain of all

laminations are approximately parallel

longitudinally, in which the laminations are bonded

with adhesive.

Gang nail system

system of wood construction that

uses spiked metal plates to assemble members as in a

truss. These spiked or toothed metal fasteners are

attached and secured at intersection of members such

as chord to web members or web member to chord,

etc

Building Paper

Paper used in building construction particularly for

sheathing, roofing and insulation, in making asphalt

shingles, laminated and corrugated building products,

concrete form materials, moisture and vapor barrier,

cushion material, wall paper, envelope or sheath for

other building materials and as fireproofing material

Sheathing Paper

Paper used to provide airtight barrier over walls,

floors, ceilings, etc.

Plain Paper

Types of Sheathing Paper

A low cost paper made from semi-chemical pulp

and waste paper or a tough paper made from kraft

paper.

Asphalt Impregnated or Coated Felt or Kraft

Paper

Types of Sheathing Paper

Made from asphalt of varying quantities with

densities ranging from 4 to 10 lbs per square foot.

Roofing Felt

Used in making a built-up roof; manufactured in 36

in. wide rolls and weights from 3 to 20 lbs. per

square foot.

Rolled Roofing

heavy, mineral surfaced paper used as a final roof

covering, made 18 and 36 wide, in various weights

from 45 to 120 lbs. per square foot

Wood Fiber Insulating Paper

Made from ground wood or bagasse with some

wastepaper pulp added. Usually gray in color and

produced in 36 in. wide rolls, weighing about 9 lbs.

per square foot. This is used for insulating walls,

ceilings and floors.

Asbestos Fibers

A soft, pliable paper used for insulating pipes for

carrying steams, boilers and other vessels with high

temperatures. It is produced in various weights

usually from 5 to 10 lbs. per square foot. A heavier

asbestos felt paper is produced for use as a built-up

roofing material. This is saturated with asphalt and

produced in 36 in. wide rolls weighing

approximately 15 lbs. per square foot.

Vapor Barrier Paper

This material is intended to prevent the passage of

moisture vapor through walls, ceilings and floors.

Spiral Tube Concrete

Form made from kraft paper

Boxlike Form

Made from corrugated container paper

Cast-in-place concrete

a concrete deposited, formed,

cured, and finished in its final position on site as part of a structure

unhardened state

what state is cast in place concrete transported

truck agitator

in cast in place concrete concrete is delivered to the site in a what

slab-on-ground and

foundations

Cast-in-place concrete is the material of choice for

true

t/f:

Concrete is ordered and placed as needed and does not need to be trimmed or cut after installation.

f

t/f

extra concrete can not be returned to the ready mix plant for recycling

jersey barriers or retaining

wall blocks

what can they do for extra concrete

Special set retarding admixtures

what can be added to return concrete to allow for storage and future use.

3in or more

concrete forms an air barrier with what thickness

light/ natural

what colored material helps reduce the heat island effect

Self-compacting concrete

is able to flow and consolidate under its own

weight and requires no vibration.

Vibration

the most widely used method for consolidating concrete

curing process

After the concrete is placed, a satisfactory moisture content and temperature is required for concrete to develop

adequate strength and durability; this is called the

Talon 2 360 Rebar Crosstie system

A machine which automatically wires together reinforcing steel bars.

Self-compacting high-performance concrete

A novel mixture of standard concrete materials which eliminates the

vibration activities of the placement subprocess.

Traditional Forms

uses temporary forms, typically

made of aluminum. Rigid foam insulation is placed inside the forms or

between the forms and held in place with a system of non-conductive ties.

Concrete is then poured on either side of or between the foam. Steel rebar is

also generally used to add strength to the wall. Once the concrete has cured,

the forms can be removed and re-used many times with a minimum of

maintenance.

Tunnel Forms

walls, floors and ceilings are cast at the same time. Special heaters

suspended inside the forms speed the curing process, actually "baking" the concrete. This

enhanced curing process allows the forms to be stripped and repositioned the next day

best suited to multi-family buildings and attached housing where room dimensions are

repeated, since multiple units can be created in a single pour.

Pre-cast Concrete

a form of construction, where concrete is cast in a reusable mould or "form" which is then

cured in a controlled environment, transported to the construction site and lifted into place. It is manufactured by industrial

methods based on mass production in order to build a large number of buildings in a small amount of t ime at low costs.

Large-panel systems

refers to multistory structures composed of large wall and floor concrete

panels connected in the vertical and horizontal directions so that the wall panels enclose

appropriate spaces for the rooms within the building

Frame systems

can be constructed using either linear elements or spatial beamcolumn

sub-assemblages. Precast beam-column sub-assemblages have the advantage that the

connecting faces between the sub-assemblages can be placed away from the critical frame regions;

however, linear elements are generally preferred because of the difficulties associated with

forming, handling, and erecting spatial elements.

Slab-column systems with walls

These systems rely on shear walls to sustain lateral load effects, whereas the slabcolumn

structure resists mainly gravity loads. There are two main systems in this category

FLAT PLATE

A concrete slab of uniform thickness reinforced in two or more directions and

supported directly by columns without beams or girders. are suitable

for short to medium spans with relatively light live loads.

shear

Since there are no

column capitals or drop panels, ___________ governs the thickness of a flat plate

FLAT SLAB

flat plate thickened at its column supports with column capitals

and drop panels to increase its shear strength and moment-resisting capacity suitable for heavily loaded spans. It is a concrete slab which is reinforced in two or more directions, usually

without beams or girders to transfer the loads to supporting members. Flat slabs are most commonly used today for

buildings supporting very heavy loads. When live load exceeds 150 lb per sq. ft., this scheme is by far the most economical.

RIBBED SLAB

A reinforced concrete slab cast integrally with a series of closely spaced joists which in turn are supported by a parallel set of beams. designed as a series of parallel t-beams and economical for medium spans with light to medium live loads also called joist slab.

Distribution rib

rib formed perpendicular to the joists of a ribbed slab to distribute possible load concentrations over a larger

area one required for spans between 20 and 30 ft. (6and 9 m) and two for spans over 30ft.

Joist band

A broad, shallow supporting beam for a ribbed slab that is economical to form since its depth is the same as

that of the joists

Pan

reusable metal or fiberglass mold used in forming a ribbed slab, available in standard 20-

and 30- inch (508- and 762-mm) widths and a variety of depths.