Desert Landing Site (DLS) – Final0% 9 Desert Landing Site (DLS) - FinalPlease complete all of the questions. Your results will be displayed at the end of the test. Save the results to your desktop to a PDF (Ctrl + P) 1 / 25Each type of Desert Landing Site has its own characteristics that must be considered in terms of ______________________ its location, location, location. its USCS soil classification. its SPACI ratings. its surface hardness, stability, and suitability for different types of aircraft. 2 / 25Which statement describes the sustainment criteria for an Operational evaluation of a Landing Zone (LZ)? Uses evaluation criteria of 1,000 passes and maximum aircraft weight to determine allowable load, weight-bearing capacity (WBC), and allowable passes, ensuring sustained aircraft operations throughout the expected LZ operation. Evaluates airfield capability to support long-term operations, typically involving 50,000 passes or more at maximum aircraft weight. Applies evaluation criteria for 100 passes at maximum aircraft weight to support an initial surge of mission aircraft, focusing on short-term operational needs. Analyzes the environmental sustainability of the LZ by measuring the impact of aircraft operations on surrounding natural habitats. 3 / 25True or False?Alluvial Fan(s) are?Description: Cone-shaped deposits of sediment crossed and built up by streams. These areas can be relatively flat but may have soft or uneven surfaces.Examples: Found at the base of mountain ranges in deserts, such as the Sierra Nevada or Death Valley. True False I don't know 4 / 25Aside from the standard DCP testing priorities, what are some additional critical and unplanned DCP testing locations that should be considered? Areas with consistently high traffic where soil compaction is assumed to be uniform. Well-maintained grassy areas, as they are assumed to be stable and do not need further testing Flat, dry areas with no visible vegetation or soil discoloration. Wet areas, discolored soil, vegetation, animal burrows, subsurface roots, and areas with surface damage 5 / 25Which of the following is a primary purpose of field soil tests? To assess the nutritional content of soil for agricultural purposes. To evaluate soil stability, drainage, and suitability for airfield construction. To measure the color and aesthetic appeal of the soil for risk analysis. To determine the presence of rare minerals and gemstones in the soil. 6 / 25True or False? When dry, the compacted surface of a dry lake-bed can be incredibly hard and capable of supporting significant loads. True False I don't know 7 / 25In terms of drainage, how can the contact of water with silt be characterized? silt repels water entirely, preventing any absorption and keeping the surface completely dry water drains through silt extremely quickly, leaving the surface dry and dusty. soaks water up like sponge – slow drainage so it must evaporate & creates muddy mess. soaks water up very slow – evaporation will dry it out and then creates a thin and soft layers. 8 / 25Clay (C) is ________? is a type of rock that has large particle sizes, known for its coarse texture and low plasticity when wet. is a type of soil particle with extremely large particle size, characterized by its rough texture and low plasticity when wet. is a type of soil particle with extremely small particle size, characterized by its fine texture and high plasticity when wet. is a type of mineral known for its sandy texture and inability to hold water due to its coarse particle size. 9 / 25The measure of a soil’s ability to allow water to flow through its pores or voids is called? Impermeability Penetrability Porosity Permeability 10 / 25A(n) _______ is a flat, dry area in a desert where water occasionally collects after rainfall but usually evaporates quickly, leaving behind a surface of fine sediments or salt. alluvial fan desert pavement playa fluvial fan 11 / 25What are some key aspects of Divergent plate tectonics? volcanic activity, mid ocean ridges, sea floor spreading, earthquakes, and rift valleys. lateral movement, no crust creation or destruction, earthquakes, and fault lines. volcanic activity, subduction zones, mountain building, earthquakes, and rift valleys. I don't know 12 / 25Use PCASE program on your computer in order to answer the following question: Given the following 4 x DCP readings for this airfield, which reading is the weakest and what is the allowable gross load and passes for a C-130J-30 for that location? DCP Test # 5 / Allowable Gross Load 88.4 | Passes 376 DCP Test # 6 / Allowable Gross Load 134.3 | Passes 377 DCP Test # 7 / Allowable Gross Load 248.0 | Passes 57 DCP Test # 8 / Allowable Gross Load 101.9 | Passes 288 13 / 25When using the soil 'Jar Test' method to identify soil types and classification; how quickly do gravel and sands settle to the bottom of the jar? between 45 - 60 seconds > 2 hours > than 15 seconds < than 15 seconds 14 / 25Given the following APE Report result, what recommendations would you make with regard to usage of the airfield? This is only one APE report reading and therefore it would be difficult to analyze the entire airfield's usage capacity DO NOT USE this airfield because not all of the aircraft have the minimum amount of passes required for sustained operations Only aicraft that exceed the C-17 (486k) 50,000 pass design readings for AP should utilize this airfield All of the aircraft listed can safely operate at this airfield but some require additional monitoring efforts 15 / 25What is the correct 'Material Type' that is associated with the surface layer of a DCP reading? Comp Subgrade Natural Subgrade Unbound Aggregate Unbound Crushed Stone I don't know 16 / 25Using the Soil triangle image below; find the correct UNIFIED SOIL CLASSIFICATION SYSTEM (USCS) category for a soil sample that indicates: 30% Sand | 30% Silts. | 40% Clay ML CH - MH CL - CH CL 17 / 25List the order of DCP priority test locations on a runway: 1) Soft/Wet Spots, 2) Repaired Areas, 3) Primary Braking, 4) Turnaround, 5) Touchdown, 6) Point of Rotation 1) Soft/Wet Spots, 2) Repaired Areas, 3) Primary Braking, 4) Touchdown, 5) Turnaround, 6) Point of Rotation 1) Soft/Wet Spots, 2) Repaired Areas, 3) Touchdown, 4) Turnaround, 5) Primary Braking, 6) Point of Rotation 1) Soft/Wet Spots, 2) Repaired Areas, 3) Touchdown, 4) Primary Braking, 5) Turnaround, 6) Point of Rotation I don't know 18 / 25Which SPACI surface distresses are considered MAJOR distresses, and depending on actual location on the Ruwnay, may be categorized as RED, and may cause the overall condition of the airfield to be categorized as RED? Potholes, Ruts, and Dust Potholes, Ruts, and Rollling Resistant Material Stabalized Layer Failure and Loose Aggregate Coverage & Size Ruts, Loose Aggregate Coverage & Size, Jet Blast Erosion I don't know 19 / 25How is the SPACI surface distress of Rolling Resistant Material (RRM) related to the Rolling Friction Factor (RFF)? They are independent evaluations They are 'kissing cousins' RRM Average Depth is referenced to the RFF Scale They are co-dependent evaluations RFF Average Depth is referenced to the RRM Scale 20 / 25You have just imported a MagRuler text file into the DCP module within PCASE and get the following result (see image) that indicates 100 CBR for all of the readings.What is the remedy to fix the apparent issue? Change the 'Out Units' from English to SI Default seetings must be changed to Shattered Slab Go to the Data Reduction tab and break the layers Change the 'In Units' from SI to English I don't know 21 / 25How many different surface distresses are evaluated in order to calculate the Semi-prepared Airfield Condition Index (SPACI) of a Runway? As many different distresses as needed. Eight different distresses As many different distresses as required. Four different distresses 22 / 25If the DCP Hammer drives the DCP rod one (1") Inch with 1 (one) blow, then what is the California Bearing Ratio (CBR) equivalent? 7.8 CBR 8.3 CBR 8.7 CBR 3.8 CBR I don't know! 23 / 25When can a layer of soil (measurement and CBR readings) be discarded from analysis? Never If a soft layer of less than 4 in (10 cm) exists as a top layer. Before and after using a drill to get past an impenetrable layer. If a soft layer of less than 4 in (10 cm) exists at any depth. I don't know 24 / 25According to the USCS soil classification chart, which one of the following lists of soil types is incorrect? OL, OH, CL, CH WG, PG, MG, CG GW, GP, GM, GC SW, SP, SM, SC I don't know 25 / 25What is the primary purpose of the Dynamic Cone Penetrometer (DCP) in airfield surveying? To assess the chemical composition of soils for environmental contamination studies. To measure the slope and gradient of the airfield surface to ensure proper water drainage. To assess the thickness of pavement layers to determine their suitability for different types of aircraft. To evaluate the weight-bearing capacity and shearing strength of soils and granular materials, In-Situ. Your score isThe average score is 66% 0%
