Building Construction Ch. 9 Quizes
Common structural steel has less than ...... of carbon.
Cast iron has ........ carbon content, which makes it.......... ** Answ** less than three tenths of
one percent
three to four percent, hard but brittle
Basic properties of steel: ** Answ** 1. is the strongest of structural materials.
2. non rotting, resistant to aging, and dimensionally stable.
3. consistent quality due to controlled process
4. expensive, but can be used in smaller quantities
One inherent disadvantage of steel: ** Answ** 1. rust when exposed to air and moisture
Ways steel can be protected from rust: ** Answ** 1. paint with rust inhibiting paint
2. coat with zinc and aluminum
3. adding alloys that resist rust
The following elements added to steel alter the material for specific attributes: ** Answ**
Molybdenum-strength
vanadium-strength and toughness
manganese-resistance to abrasion
...... of steel is an important attribute because it permits the steel to be rolled into a variety of
structural shapes. ** Answ** the ductility
..... is used for members that have a thin cross section, such as floor and roof decking and wall
studs. What property allows this? ** Answ** Cold rolled steel (CRS)
ductility
, CRS studs can be used for ....... or ........ ** Answ** interior non-load bearing partitions or
exterior bearing walls.
One commonly used structural steel is ....... which includes the elements:
Yield curve is initially: ** Answ** ASTM A36, manganese, carbon, silicon
steep and straight
When the ........ of ASTM A36 is reached at approximately.........., the steel undergoes
pronounced deformation and breaks at the ............. ** Answ** yield point stress, 36,000psi,
ultimate stress
The ductility of steel can be illustrated by comparing the stress exerted on the steel against the
resulting deformation known as the........... ** Answ** strain
Steel with higher yield points have ........ Bridge strands have tensile strengths as high as.........
** Answ** less ductility, 300,000psi
The amounts of expansion for slender (steel) members, such as beams, columns, can be
determined through a property known as ....... ** Answ** linear coefficient of thermal
expansion
An important factor of steel use is the ............ ** Answ** support system used with a beam
If an unrestrained beam 20ft in length were heated uniformly from 70*F to 1000*F is would
expand ........ ** Answ** 1.4 inches
To the fire service, the ....... is its most significant characteristic. ** Answ** deterioration of
the strength of steel at elevated temperatures
The speed with which unprotected steel fails when exposed to fire depends on several factors,
including: ** Answ** 1. mass of steel members
Common structural steel has less than ...... of carbon.
Cast iron has ........ carbon content, which makes it.......... ** Answ** less than three tenths of
one percent
three to four percent, hard but brittle
Basic properties of steel: ** Answ** 1. is the strongest of structural materials.
2. non rotting, resistant to aging, and dimensionally stable.
3. consistent quality due to controlled process
4. expensive, but can be used in smaller quantities
One inherent disadvantage of steel: ** Answ** 1. rust when exposed to air and moisture
Ways steel can be protected from rust: ** Answ** 1. paint with rust inhibiting paint
2. coat with zinc and aluminum
3. adding alloys that resist rust
The following elements added to steel alter the material for specific attributes: ** Answ**
Molybdenum-strength
vanadium-strength and toughness
manganese-resistance to abrasion
...... of steel is an important attribute because it permits the steel to be rolled into a variety of
structural shapes. ** Answ** the ductility
..... is used for members that have a thin cross section, such as floor and roof decking and wall
studs. What property allows this? ** Answ** Cold rolled steel (CRS)
ductility
, CRS studs can be used for ....... or ........ ** Answ** interior non-load bearing partitions or
exterior bearing walls.
One commonly used structural steel is ....... which includes the elements:
Yield curve is initially: ** Answ** ASTM A36, manganese, carbon, silicon
steep and straight
When the ........ of ASTM A36 is reached at approximately.........., the steel undergoes
pronounced deformation and breaks at the ............. ** Answ** yield point stress, 36,000psi,
ultimate stress
The ductility of steel can be illustrated by comparing the stress exerted on the steel against the
resulting deformation known as the........... ** Answ** strain
Steel with higher yield points have ........ Bridge strands have tensile strengths as high as.........
** Answ** less ductility, 300,000psi
The amounts of expansion for slender (steel) members, such as beams, columns, can be
determined through a property known as ....... ** Answ** linear coefficient of thermal
expansion
An important factor of steel use is the ............ ** Answ** support system used with a beam
If an unrestrained beam 20ft in length were heated uniformly from 70*F to 1000*F is would
expand ........ ** Answ** 1.4 inches
To the fire service, the ....... is its most significant characteristic. ** Answ** deterioration of
the strength of steel at elevated temperatures
The speed with which unprotected steel fails when exposed to fire depends on several factors,
including: ** Answ** 1. mass of steel members
