FDOT Earthwork Level 1 Exam Questions With 100% Correct Answers | 2024/2025

FDOT Earthwork Level 1 Exam Questions With 100% Correct Answers | 2024/2025 Basics covered in Level 1 - ___ Nuclear Testing Speedy Moisture Report Forms Earthwork has to do with the roadway in what way? - ___ Earthwork is the excavation and placement of soils and materials supporting the proposed roadway. In Earthwork what is a lift? - ___ 6" of compacted depth at full width In Earthwork what is a Lot? - ___ A lot is 1 lift at 500 ft or within compacted area. Isolated compaction operations are separate lots. Sampling at the roadway is done for - ___ Done for base, sub grade, and embankment. The material identification number for embankment in the laboratory is - ___ 004L The material identification number for embankment in the field is - ___ 004F The material identification number for base is - ___ 030 Samples are collected by - ___ project personnel PP Sampling in the field it is important to - ___ sample each type of material and have enough for a representative sample When to secure samples - ___ After material is placed but before compaction effort is applied Sample transmittal card the source uses what code for the jobsite - ___ 08 For material description the minimum is always - ___ Color and texture On sample bags be sure to put - ___ Project # Sample # Location What is the document that itemizes the minimum requirements for sampling and testing? - ___ Sampling, testing, reporting guide Unit weight is - ___ the weight of a material occupying a volume Wet density - ___ is the weight of soil and water in a volume Dry density - ___ weight of soil solids in a volume Moisture content - ___ amount of water in the soil in the volume The lot index and special conditions is for - ___ detailing verification pass or fails All of the QC report forms - ___ same as the QC's but for VT's The dry density on log in data sheets is - ___ the computed dry density calculated with the speedy Graph plot and counting lifts - ___ x axis is lifts, one box is a lift y axis is station numbers and the boxes go by 5 FM T-238 details - ___ the designation number for the nuclear density test Why is the Proctor test important - ___ - it gives us the density that the contractor must achieve - provides the moisture range that allows for minimum compact ice effort to achieve density. - provides data on the behavior of the material in relation to various moisture contents. - you can't determine whether a density test passes or fails without it. Troubleshooting out of tolerance counts? - ___ Are the batteries low? Is the reference block on proper material? Is the gauge properly seated on the reference block? Is the source rod in the proper position? Has proper maintenance routinely been performed? Moisture had the gauge been subject to rain or extreme moisture. How does moisture react with soil - ___ acts as a lubricant permitting maximum densification Compaction expels air and water causing - ___ Increase in unit weight and Decrease in compressibility and permeability (ability of water to flow through) MSE wall stands for - ___ Mechanically stabilized earth wall FM 1 - T 180 refers to which proctor - ___ Modified AASHTO T 99 refers to which proctor - ___ Standard Density is the measuring of - ___ the dry density of soil compared to max dry density determined by proctor % compaction When is the density be more than 100% of the maximum dry density on the proctor test? - ___ If compactive effort is more applied in field than lab Direct transmission is - ___ a rod with Cesium-137 lowered to depth. The photons pass through material to the gauge. Backscatter geometry is - ___ gamma photons reflected on to material and required to have at least one reach the gauge. The standard block and gauge must have matching - ___ serial numbers If daily standard counts are out of tolerance even after being re-run what do you do? - ___ Replace gauge Gauge calibration must be performed by - ___ qualified personnel How often must the gauge be calibrated per FDOT - ___ Annually (FDOT) or when needed Take standard counts daily to - ___ detect inconsistencies early Standard counts are taken - ___ every day its used and to measure equipment aging and drift In the gauge diary (for standard counts) when it is not used what do you put down? - ___ Idle During a standard count the gauge must be how far from large objects - ___ 10ft During a standard count the gauge must be how far from any nuclear source - ___ 30ft The standard count must be performed on what time of ground - ___ Aspahlt, concrete, or 100pcf material (greater than) Keep the standard block and gauge - ___ level and stable For turning on the gauge how must it be handled - ___ Warm up per manufacturer's instructions How do you determine the day to day shift - ___ Find the Average of the previous 4 counts. Find the difference between the avg and that days count. Take the difference and divide it by the average. Multiply the result by 100. Do this for for both density and moisture counts separately. The shift tolerance for density counts is - ___ a shift of 1% or less The shift tolerance for moisture counts is - ___ a shift of 2% or less A gauge must be how far from all vertical projections - ___ 6 inches When smoothing a test site remove all what? - ___ Loose and disturbed material When smoothing a test site and it has voids how big what do you do? - ___ 1/8 of an inch. Use native fines to fill the voids Always drive the drill rod to testing depth length and - ___ another 2 more inches Remove the drill rod by - ___ rotating