CE200
QUIZ 3 EXAM 2026
QUESTIONS WITH DETAILED ANSWERS
Moisture in timber - ANSWER--Is stored in the cell cavity (absorbed or free moisture)
-Is stored in the cell wall (absorbed or bound moisture)
-Must have evaporation first deplete the absorbed moisture before having any of the absorbed
moisture begin to evaporate
An important difference between hardwood and softwood trees for civil engineering
construction, as far as economy and usability is concerned is: - ANSWER--Softwood trees grow
faster, taller, and longer between branches than hardwood tree
-Timber from softwood trees is less costly than timber from hardwood trees
Wood is an extremely desirable civil engineering construction material because: - ANSWER--It
is a low-cost material where trees are available
-Is is a strong material with good strength to weight ratio and can be very durable if properly
seasoned and maintained
-It is easy to work with and can be transformed to different shapes and forms to fit specific
demands quickly
-It is highly recyclable in the form it had been used originally and not by having to be
reprocessed to be reused.
Wood is a unique civil engineering construction material b/c - ANSWER--Being a biogenic
material, it is a renewable material
-it has very low heat absorbency and emissivity
-It has superior resistance to mechanical shock
Timber used in civil engineering construction is sourced from: - ANSWER--Exogenous trees that
have annual or annular growth rings
-Softwood
-Evergreen trees that have needle leaves
When all the absorbed or free moisture has evaporated the wood or timber reaches its fiber
saturation point - ANSWER--At which point, depending on the type of the tree, the timber
moisture content may reach, 21%-32%
QUIZ 3 EXAM 2026
QUESTIONS WITH DETAILED ANSWERS
Moisture in timber - ANSWER--Is stored in the cell cavity (absorbed or free moisture)
-Is stored in the cell wall (absorbed or bound moisture)
-Must have evaporation first deplete the absorbed moisture before having any of the absorbed
moisture begin to evaporate
An important difference between hardwood and softwood trees for civil engineering
construction, as far as economy and usability is concerned is: - ANSWER--Softwood trees grow
faster, taller, and longer between branches than hardwood tree
-Timber from softwood trees is less costly than timber from hardwood trees
Wood is an extremely desirable civil engineering construction material because: - ANSWER--It
is a low-cost material where trees are available
-Is is a strong material with good strength to weight ratio and can be very durable if properly
seasoned and maintained
-It is easy to work with and can be transformed to different shapes and forms to fit specific
demands quickly
-It is highly recyclable in the form it had been used originally and not by having to be
reprocessed to be reused.
Wood is a unique civil engineering construction material b/c - ANSWER--Being a biogenic
material, it is a renewable material
-it has very low heat absorbency and emissivity
-It has superior resistance to mechanical shock
Timber used in civil engineering construction is sourced from: - ANSWER--Exogenous trees that
have annual or annular growth rings
-Softwood
-Evergreen trees that have needle leaves
When all the absorbed or free moisture has evaporated the wood or timber reaches its fiber
saturation point - ANSWER--At which point, depending on the type of the tree, the timber
moisture content may reach, 21%-32%
