2nd Test Flashcards
Whats another name for constructionn surveys
Engineering surveys
What is a topographic survey
3D map
Route surveys consist of what
Railways, highways, pipelines, powerlines
2 types of special surveys
Control (more precise)
Hydrographic
What is the survey term “elevation”
Vertices distance above or below established hieght on earth’s surface at sea level or 100’ known as benchmark
Who’s responsibility is it to provide baselines and benchmarks to layout work
Government
What is clearing and grubbing
Process of removing vegetation
What are preclearing / grabbing activities
Verify permits and right aways,
Review schedule of ops
Check cutoff elevations
Trees with wounds of how big need to be treated woth wound paint
1 1/2”
What governs works item safety
Opnavinstr 5100.23
Demolition inspection falls under what subpart in 29cfr
Subpart T
What angle of Chutes need to be enclosed
45°
For holes in floor what decisions for barricades
Not less than 42” high
Not less than 6’ back from hole
Barrow pit
Where and excavation forms a pit which material from will be used somewhere else
How deep is top soil
4-6”
What shoukd you never use under footings to correct over excavation
Fill
Who can approve modifications to established elevation
Contracting officer in writing
When is compaction at its best
A given compaction has optimal moisture content at which Max Dry Density (MDD) IS GREATEST and compaction is best
Whats another name for sand displacement test
Sand cone test
What does the water displacement test do
Determines dry density
Whats is a lateral sewer
Connects house to branch or other sewer and has no common tributary
What size pipe is house sewer
4-6” pipe
Hoe far from building is house sewer
3-5’
Another name for pumping station
Lift station
Batter boards distance
25-50’
Sanitary sewer mist be how far from water service line
Not less than 5’ below water line
When installing sewers and drains you must
Start on lower end and work uphill
Bell ends must fave uphill
All sewer lines need to be _____
Slooped
Manholes distance
No greater than 400’ intervals for 8” pipe and larger
Two types of sewer leakage
Exfil and infil
Another name for leakage test
Static test
Air tes trust have what PSI and for gow long
5 psi for 15 mins
Deflection / deformation test must have what percentage of ID pulled through
95%
What is type k copper
Green band
High pressure
What is type L copper
Blue band
Interior plumbing and heating
What is type m copper
Red band
Low pressure
Water lines should be how far below finished grade and frost line
12” finished
6” frost
When are thrust blocks required
Bends deflecting 22.5 or more degrees
Disinfection values of chlorine
3’ FPS 50 PPM CHLORINE
REMAIN IN SYSTEM FOR 24-48 HOURS
Whats is the most common method to join plastic pipes
Primer and cement
Ways to join plastic pipes
Solvent welding
Fusion
Fillet
Threading ( only schedule 80 or greater
Heating lines above ground have what on them
Insulation and jacket
Heating (steam) lines below ground have what
Conduit and utilidor system
What is stabilization
Blending and mixing materials with soil to improve strength and durability
What happens when quality of soil layer increases
Ability to distribute a load increases
Two types of soil additives
Chemiclw and bituminous
Portland cenent shoukd have PI of what
Less than 30
What is fly ash
Mixed with lime
Corse amd medium course
What is pick amd click test must Pentwater how deep
1/8 to 1/4”
Subpart A in Cfr
Osha has right to enter
Subpart b cfr
General interps
Subpart c CFR
Can’t work in hazardous
Employers responsisibulty to fix
Those type of asphalt prep is applied to base of surface
Prime coat
The structure function of pavement is that is that it spreads wheel weight to what
Foundation
This type of Portland cement is used in concrete pavement when high strengths are needed very early in operation
Type 3
