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CT 125,231,375 Questions and Correct
Answers/ Latest Update / Already Graded
Riffle splitters must have no less than how many chutes for fine
Ans: 12
Riffle splitters must have no less than how many chutes for coarse
Ans: 8
What to do when combining or reducing samples
Ans: Use riffle spliter is perferred but quartering canvas is
acceptable (except HMA)
When collecting from HMA storage bin, what sampling device do you
need?
Ans: A pan of sufficient size to intercept the entire cross
section and hold quantity without overflowing
HMA Supplemental Fine Aggregate may be sampled from
Ans: feed line or surge tank preceding the proportioning device
All rights reserved © 2025/ 2026 |
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Baghouse dust may be sampled from
Ans: Bottom of baghouse under the feed screw with a sampler
fixed under the baghouse.
Cement concrete batch plants sampling from
Ans: Sampling the belt feeding the continuous mi er or the
batch plant bins (immediately preceding the weigh hopper).
Use 2 templates that confirm to the shape of the belt and
sample all material in between templates.
Sampling from windrows
Ans: Method 1: sample entire cross section before water added
using steel or plywood to isolate sample
Method 2:
Remove a cross section at least width of 1 shovel. From either
remaining side, select appropriate width needed to provide the
sample and make a vertical cut. Make sure to include material
that was sloughed after removing cross section
Sampling from roadway
Ans: Obtain at least 3 equal portions at random locations
(transversely) across the width of the roadway after material
All rights reserved © 2025/ 2026 |
CT 125,231,375 Questions and Correct
Answers/ Latest Update / Already Graded
Riffle splitters must have no less than how many chutes for fine
Ans: 12
Riffle splitters must have no less than how many chutes for coarse
Ans: 8
What to do when combining or reducing samples
Ans: Use riffle spliter is perferred but quartering canvas is
acceptable (except HMA)
When collecting from HMA storage bin, what sampling device do you
need?
Ans: A pan of sufficient size to intercept the entire cross
section and hold quantity without overflowing
HMA Supplemental Fine Aggregate may be sampled from
Ans: feed line or surge tank preceding the proportioning device
All rights reserved © 2025/ 2026 |
, Page |2
Baghouse dust may be sampled from
Ans: Bottom of baghouse under the feed screw with a sampler
fixed under the baghouse.
Cement concrete batch plants sampling from
Ans: Sampling the belt feeding the continuous mi er or the
batch plant bins (immediately preceding the weigh hopper).
Use 2 templates that confirm to the shape of the belt and
sample all material in between templates.
Sampling from windrows
Ans: Method 1: sample entire cross section before water added
using steel or plywood to isolate sample
Method 2:
Remove a cross section at least width of 1 shovel. From either
remaining side, select appropriate width needed to provide the
sample and make a vertical cut. Make sure to include material
that was sloughed after removing cross section
Sampling from roadway
Ans: Obtain at least 3 equal portions at random locations
(transversely) across the width of the roadway after material
All rights reserved © 2025/ 2026 |
