ARCH315

The designation W14x38 means that the nominal depth of the section is ____ and its weight is ____.

14 in, 38 lb/ft

Wood trusses are generally spaced at

24" on center

The actual dimensions of a 4x8 lumber are:

3 1/2 x 7 1/4

The approximate density of lumber is

35 pcf.

A K-series steel joist that is 20 in deep cannot be used to span more than

40 ft

The most commonly used plywood panel (nominal) size is

4x8

Which of the following lumber cross sections is that of a dimension lumber? 4x8 1x8 6x12 6x8 1x12

4x8

The nails most commonly used in wood frame construction are:

6d, 8d, 10d, 16d

With respect to veneer quality, softwood plywood is graded in grades:

A to D.

Redwood is grown mainly in

California.

Which of the following grades will not apply to a 2x8 lumber? No. 1 No. 2 No. 3 Construction

Construction

T/F A lumber grade stamp must include information on the cross-section dimensions of lumber.

False

T/F Exterior siding panels may be made of OSB or plywood

False

T/F Fire-protection of structural steel framing members is mandated by building codes for all buildings.

False

T/F Flat-sawn lumber is dimensionally more stable than quarter-sawn lumber.

False

T/F In calculating the board foot measure, we must use the actual dimensions of lumber, not its nominal dimensions.

False

T/F Nail plates, used to join members of a truss, are generally used only on one face of the truss.

False

T/F Roof decks are anchored to supporting members by continuous welds along the support lines.

False

T/F Spray-on fire protection of steel gives a much cleaner appearance than gypsum board encasement of steel.

False

T/F Steel joists and joist girders are best utilized in a building that has concentrated loads.

False

T/F Steel roof decks are either form decks or composite decks.

False

T/F The mini-mill method of steel manufacturing predates the integrated-mill method.

False

Which decks require structural concrete topping?

Form deck Composite deck Floor deck

The acronym HSS stands for

Hollow Structural Section

Is J-series a steel joist series?

No

Which of the following is not a lumber grade? No. 1 No. 2 No. 3 No. 4 Construction

No. 4

What means the same thing as quarter-sawn?

Radial-sawn

To obtain the structural engineering properties of standard steel sections, what publication is generally used?

Steel Construction Manual

T/F A lumber grade stamp must include the mill identification number.

True

T/F An OSB panel generally has greater shear strength than a plywood panel of the same size and thickness.

True

T/F Diagonal bridging may be used as an alternative to horizontal bridging to stabilize steel joists.

True

T/F From the user's view point, the different between MC 15 and KD 15 is generally ignored.

True

T/F Hardwoods are generally used for fine-quality flooring, furniture, and wall paneling.

True

T/F In a steel angle, both legs must have the same thickness but may be of different lengths.

True

T/F Lumber and solid sawn lumber are two terms used synonymously?

True

T/F Nail popping is primarily a problem in floor sheathing and is caused by the shrinkage of floor sheathing.

True

T/F Steel floor decks are either form decks or composite decks.

True

T/F Unbalanced beams can be used only as single-span beams.

True

T/F Wood I-joists are made of LVL or solid sawn lumber flanges and webs.

True

Which of the following grades can only be used as blocking? No. 1 No. 2 Construction Standard Utility

Utility

What steel shape is the most commonly used for the structural frame of buildings?

W-Shape

Slag is

a waste product generated from the manufacture of steel

Preservative-treated lumber is effective

against both fungi and termites.

Wood is stronger

along the grain than across the grain.

A 10-ft long stud was installed in position when the wood's moisture content was 19%. During a long dry spell, the wood's moisture content became 8%. The new stud length will be

approximately the same as the initial stud length of 10 ft.

HSS members are made by

bending and welding heated steel plates.

The difference between softwoods and hardwoods is based on the

botanical characteristics.

All structural steel sections are made

by preheating billets or blooms and rolling them to shape.

Which of the following ferrous metals has the largest amount of carbon? 1. steel 2. wrought iron 3. cast iron

cast iron

The walls of wood cells consist primarily of

cellulose.

Steel decks are made from

cold-formed steel

Balanced glulam beams are mandated for

continuous beams and beams with an overhang.

The basis for distinguishing lumber as board, dimension lumber, and timber is the

cross-sectional dimensions of lumber.

In the steel joist designation 24LH10, the number 24 gives the

depth of the joist in inches.

Cross-graining makes a plywood panel

dimensionally more stable less likely to split than solid sawn lumber stronger in the direction of face veneer grains

Compared to sawn lumber joists, wood I-joists are

dimensionally more stable.

The moisture content in a piece of lumber has been measured to be 15%. According to the wood industry, this piece of lumber will be classified as

dry.

Which of the following nailed connections is the strongest? face nailing toe nailing end nailing

face nailing

Characteristics of a truss include

greater spanning capability than a sawn lumber beam having the same amount of material individual members joined together to form an array of interconnected triangular frames

Fungal decay in wood occurs when the moisture content in wood is

greater than or equal to 20%.

If we cut a cross section through a tree trunk, we will see a number of rings. The most appropriate term for these rings is

growth rings.

The cellular structure of wood consists mainly of

hollow, long tubular cells.

Steel joists are braced against instability by

horizontal bridging members at the top and bottom of the joists.

Wood certified by the Forest Stewardship Council (FSC) is available

in the United States, Canada, Mexico, and several other countries.

Grade stamps on engineered wood panels specify

intended use and exposure mill number allowable spans thickness

An integrated mill produces steel using 1. steel scrap 2. iron ore 3. iron ore and steel scrap 4. none of the above

iron ore

A glulam member

is generally stronger and stiffer than sawn lumber of the same dimensions.

The most common use of glulam members is in

long-span beams.

Several different types of nails are used in wood frame construction. They are typically distinguished from each other by the

nail head and nail shank.

A piece of lumber has been specified as 2"x4" in cross section. This refers to its

nominal cross-sectional dimensions.

Lumber used for structural framing members, such as studs, floor joists, and rafters, is graded using

only visual inspection.

Plywood panels should be placed with their longer dimension

perpendicular to rafters of joists.

Nails work best when they are subjected to

shear

When steel structures first appeared, they were called

skeleton frames, steel skeletons, and skeleton cages.

What are some examples of softwoods?

spruce cedar pine fir redwood

Which of the following ferrous metals is least corrosion resistant? 1. steel 2. wrought iron 3. cast iron

steel

The steel type most commonly used for framing members (columns and beams) of a steel building is

steel type A992 with a yield strength of 50 ksi.

W-shape, S-shape, HP-shape, and M-shape are all

structural steel I-sections.

The term S2S implies that the lumber has been

surfaced on two sides.

What are some examples of hardwoods?

teak rosewood balsa wood oak

Joist hangers are steel connectors

that connect floor joists with a supporting beam.

The term S-Dry implies that

the lumber has been surfaced when its moisture content was <20%.

The terms sapwood and heartwood refer to

two different parts of the same tree.

In a 2x6 stud, the wood grain is parallel to the

vertical direction.

The formula for the original moisture content in wood?

water weight / dry weight

In the United States, most structural lumber is grown in the

western and southern regions of the United States.

Plywood panels are made by gluing under heat and pressure layers of

wood veneers so that the wood grains in adjacent layers are perpendicular to each other.

How to calculate board feet?

1 board foot = 1 square foot, 1 inch thick

Unprotected glulam members with a large cross section are considered to provide a fire resistance rating of up to

1 h.

Structural lumber is typically

flat-sawn.

A pour stop is generally used with

floor decks

Lumber used for structural framing of buildings in North America is generally derived

from softwood species.

Two dissimilar metals are generally separated from each other by a separator, which helps to prevent

galvanic corrosion.

A termite shield is generally made of

galvanized sheet steel.

The thickness of sheet steel in a roof or floor deck is generally specified in terms of

gauge number.

A W-shape section is so-called because

it is an I-section with wide flanges.

Spray-on fire protection materials for steel contain

portland cement with mineral fibers or lightweight aggregate.

Laminated veneer lumber (LVL) is:

produced by gluing together wood veneers that are approximately 1/8" thick generally used as floor joists glued with all veneers running in the same direction stronger along the grain and weaker across the grain

In a galvanized steel plate that carries the designation G60, the number 60 means that

the total mass of zinc coating on both surfaces of the plate is 60 oz/ft^2.

An electric arc furnace uses

three electrodes to melt steel scrap.