Construction Questions and
Answers (Best Rated)
Granular materials
Backfill for use around culverts and pipes consists of
Alignment of the pipe
An inspector looks through one end of a drainage pipe. He is most
likely checking
Larger trench widths mean more backfill material, which increases costs.
An important consideration in excavation for drainage is the trench
width. Why is it important to keep the trench width to that which is
called for by the specifications, and not larger?
Obtain a small part of a lot to represent the whole.
The main purpose of sampling any material is?
Weight of water/weight of cement
, What is the water cement ratio?
Used to separate fine grain from coarse grain. It carried out by washing the
soil specimen on a 60pm sieve mesh.
Wet sieve
Density check
In soil testing the test used to determine the ratio of the weight of a
given volume of material to the weight of an equal volume of water is
known as?
Strength
Slump test of concrete test all but which one of the following? Water
cement ratio, admixture content, strength, durability/workability, water
content.
3 equal layers according to volume
For a concrete slump test how is the cone to be filled with concrete?
S 23° 30' E
How is the bearing of a line notated?
,Surveying tape and plumbing bob
Horizontal distances over sloping ground are usually determined by?
Less
A distance between two points 300' apart is measured on a hot day.
The tape will show a length greater than or less than 300'?
45530-45020 = 510'
510 x 0.020 = 10.2'
1252.0 + 10.2 = 1262.2
Answer is 1262.2
A road has a grade of 2.0% with an elevation of 1252.00 at station
450+20. What is the elevation at station 455+30?
The rate of decay is measured by its
Half life
The pH number that indicates the greatest acidity is
1
, Approximate mass of 49N weight is
5KG
The atomic number is the number of protons in an atom
Atomic nucleus
10
Flourine has an atomic weight of 19 and an atomic number of 9. What
is the number of neutrons in the atomic nucleus?
65
An atom has 30 protons and 35 neutrons in its nucleus. It has 30
electrons in its shells. Its atomic weight would be?
Used to determine the subdivision of the smallest division of a scale.
What is the varnier on a leveling rod used for?
25 pounds