1-23.
In what way, if any, does the
purpose of a dolphin differ
from that of a pile cluster?
1.
Dolphins are used to protect
a pier, while pile clusters
protect offshore structures
2.
Dolphins are used to protect
moles, while pile clusters
protect groins
3.
Dolphins are used to protect
ships only, while pile clusters
protect piers only
4.
None. They are both used as
protection for both piers and
ships
Learnning Objective: Describe the
types of fasteners and connectors
used in heavy-timber construction.
1-24.
What type of heavy-timber fastener
has square heads and nuts?
1.
Pin
2.
Bolt
3.
Spike
4.
Rail
1-25.
In timber construction, what is
the minimum spacing, in inches,
between bolts?
1.
9
2.
7
3.
3 1/2
4.
1 1/2
1-26.
A timber fastener that is used
primarily to prevent one member
from moving laterally in relation-
ship to another is called a
1.
lag bolt
2.
driftbolt
3.
cleat
4.
dowel
1-27.
A short length of timber that is
spiked or bolted to the adjoining
members of a joint is a
1.
connector
2.
scab
3.
cleat
4.
block
1-28.
What is the general term applied
to the variety of devices used in
bolted-lap joints between heavy
timbers?
1.
Driftpins
2.
Spike grids
3.
Expansion bolts
4.
Timber connectors
1-29.
What type of connector is embedded
in circular grooves in the faces of
the timbers being jointed?
1.
Spike grid
2.
Toothed ring
3.
Split ring
4.
Shear plate
1-30.
Which, if any, of the following
rings is/are are embedded by
pressure?
1.
Toothed ring only
2.
Spike grid only
3.
Toothed ring and spike grid
4.
None of the above
Learning Objective: Identify
different structural steel shapes
and their uses.
1-31.
What standard structural shape is
most commonly used for columns?
1. C
2. HP
3. S
4. W
1-32.
For what reason does the W-shape
provide greater strength than the
S-shape?
1.
Its flanges have a greater
cross-sectional area
2.
Its web has a greater
cross-sectional area
3.
The inner faces of its flanges
are tapered towards the web
4.
The width of the flanges is
always much greater than those
of the S-shape
4
