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NASCLA Accredited Exam - JJ Johnson Contractor Seminar YEAR 2024/2025 / ACCURATE CURRENTLY TESTING EXAM VERSIONS WITH ACTUAL QUESTIONS AND DETAILED ANSWERS WITH A STUDY GUIDE / EXPORT VERIFIED FOR GURANTEED PASS / LATEST UPDATE$17.99
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NASCLA Accredited Exam - JJ Johnson Contractor Seminar YEAR 2024/2025 / ACCURATE CURRENTLY TESTING EXAM VERSIONS WITH ACTUAL QUESTIONS AND DETAILED ANSWERS WITH A STUDY GUIDE / EXPORT VERIFIED FOR GURANTEED PASS / LATEST UPDATE
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NASCLA Accredited - JJ Johnson Contractor Sem
Institution
NASCLA Accredited - JJ Johnson Contractor Sem
NASCLA Accredited Exam - JJ Johnson Contractor
Seminar YEAR 2024/2025 / ACCURATE CURRENTLY
TESTING EXAM VERSIONS WITH ACTUAL QUESTIONS
AND DETAILED ANSWERS WITH A STUDY GUIDE /
EXPORT VERIFIED FOR GURANTEED PASS / LATEST
UPDATE
NASCLA Accredited Exam - JJ Johnson Contractor
Seminar YEAR 2024/2025 / ACCURATE CURRENTLY
TESTING EXAM VERSIONS WITH ACTUAL QUESTIONS
AND DETAILED ANSWERS WITH A STUDY GUIDE /
EXPORT VERIFIED FOR GURANTEED PASS / LATEST
UPDATE
,What are 4 types of Steel Decking? - ✔✔ANSW✔✔..Composite, Roof, Cellular, and
Form
Stressing Barrier cable - ✔✔ANSW✔✔..The anchorage at the non-stressing-end be
installed to force equal to 80% of the ultimate strength of the strand. The backstressing
force should be equal to 80% of the ultimate strength of the strand.
Nature of Soil. Soil types as determined by particle size - ✔✔ANSW✔✔..1. Boulders: 12
in or larger in diameter
2. Cobbles: larger than 3 in, smaller than 12 in
3. Gravel: smaller than 3 in, and larger than #4 sieve (appr 1/4 in)
4. Sand: particles smaller than #4 sieve and larger than #200 sieve (40,000 openings
per square inch)
5. Silts: particles smaller than .02 mm and larger than .002mm in diameter
6. Clays: particles smaller than .002 mm in diameter
Table 2-1 Relative Bearing Strength of Soils - ✔✔ANSW✔✔..Refer to Google Drive -
JJJohnson Folder
Groundwater Level: knowing the location of the groundwater level is important for 2
reasons - ✔✔ANSW✔✔..1. HIGH WATER table means that EXTRA costs will be
encountered during the excavation and construction of foundations for the contractor.
2. Water table affects the soil bearing capacity, which in turn determines the size and
type of foundation required for the building challenge for the designer.
Compaction Testing: compaction testing provides the site contractor with specific
compaction value that must be achieved. Compaction testing is based on the
relationship between soil dry density and the moisture content of the soil. -
✔✔ANSW✔✔..Lab test used is Proctor Test, developed by R.R. Proctor. Developed for
testing slightly cohesive to cohesive soils
Typical Concrete Curge and Gutter Cross Section - ✔✔ANSW✔✔..Refer to Google
Drive - JJJohnson Folder
24" total
1. First layer, 6" bottom dirt
2. Second layer, 6" granular base
3. Third layer, 12" topsoil / curb. Curb is 16-24" wide. 6" from topsoil
Concrete sidewalks are usually 4 inches in thickness, 5 feet or wider. Joint spacing? -
✔✔ANSW✔✔..Crack-control joints are placed at 3 to 5 feet. Expansion joints are
provided at intervals of 30 feet or less where sidewalks are bear against buildings or
other fixed structures. Typically a 2,500 psi air-entrained concrete is used to provide a
weather-resistant surface. The surface finish is a light broom finish, the edges are
smoothed with an edging tool.
, Removing Groundwater - ✔✔ANSW✔✔..1. Use a pump
2. Perimeter trenching with pumps
3. Lower the water table selectively in the area in which the excavating will take place
by using dewatering system like well-points
Items that affect cycle time - ✔✔ANSW✔✔..Cycle travel time is based on attainable
speeds of the truck for loaded and unloaded conditions. Attainable speeds are affected
by FOUR FACTORS: distance traveled, road resistance, grade resistance or
assistance, and rimpull.
Protection of Excavations, making sure sidewall cave-ins do not occur -
✔✔ANSW✔✔..1. Slope sides until angle of repose is 1:1 or 45 degrees
2. Provide temporary support for the earth walls, interlocking steel sheeting piling, steel
soldier piles with horizontal timber sheeting, and concrete slurry walls.
Underpinning - ✔✔ANSW✔✔..Underpinning is the provision of permanent support for
existing buildings by extending their foundations to a new, lower level containing the
desired bearing stratum. Due to removal of part of supporting soil by a new and new
loads to an existing structure
Types of piles: Pile sections are fashioned from the traditional building materials: wood,
steel, composite, and concrete - ✔✔ANSW✔✔..There are four variations when
considering load transfer characteristics: bearing piles, friction piles, friction plus
bearing, and sheet piles. Sheet piles are normally not intended for vertical loads but are
designed to resist horizontal pressure.
Parts of a Typical Pile - ✔✔ANSW✔✔..1. Head - upper final
2. Foot - lower final
3. Tip - small end before/after placed in position
4. Butt - large end before/after placed in position
5. Pile ring - wrought iron or steel hop placed on head of the pile to prevent cracking,
brooming, or splitting
6. Driving head - device placed on the head of the pile to receive hammer blows. may
be used instead of pile ring
7. Pile cutoff - portion of pile that is removed after completion of driving
8. Pile shoe - metal cone placed on the tip of the pile to protect from cracking or
splitting.
Bolt Hole diameter - ✔✔ANSW✔✔..Bolt holes for bolted connections are punched or
drilled 1/16 inch larger in diameter than the diameter of the bolts to be used
Steel structural shapes - ✔✔ANSW✔✔..S, W, Channel, Equal-leg angle, Unequal-leg
angle, HP shape, hollow, T sections cut from S and W, and plate
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