NC General Contractors Exam 2023 study guide

NC General Contractors Exam 2023 study guide inspection dept performs the following inspections: 1. footing 2. under slab 3. foundation/ wood framing 4. rough-in 5. building framing 6. insulation 7. fire protection 8. final exceptions to design professional seal requirement 1. family residence up to 8 attached units 2. a building used by a farmer (unless it involves the health or safety of the public) 3. an institutional or commercial bldg less than $90,000 or exceed 2500 sq ft. 4. reno which doesn't alter structural system, egress, or live/ dead load. Name the parts of a reference stake the distance shown on a reference stake is... the horizontal measurement of the distance from the hub to center line of the end of the fill. Also called the "offset" Slope= Rise divided by Run What is angle of a 100% slope 45* Which rock is the hardest to excavate or rip? Igneous Rock (or ignorant, hardheaded) What is igneous rock formed from? Molten magma Which rock is the easiest to excavate or rip? Sedimentary Rock How is Sedimentary rock formed? formed from sediments being compressed by other overlying sediments or water What is the level of underground water called? Water table Does the water table vary? Yes, from season to season What is the function of a well point system? used to lower the groundwater table in bad groundwater conditions Ground water causes what 2 issues? 1. unstable soil that's dangerous to work in 2. impossible to backfill What is the optimum moisture content? The right amount of moisture for compaction to maximum density What are the 3 methods of determining soil density? 1. Proctor test 2. Sand cone test 3. Nuclear Density test Which of the 3 soil tests are the most advantageous and why? Nuclear density because soil samples are not taken from the site to perform the test therefore it is a non- destructive test. Proctor and Sand Cone tests are "destructive" When are Push Scrapers used? They are used on extremely large earth moving projects A self loading scraper is commonly referred to as a what? a Pan When the soil is muddy or hard a self loading scraper is more efficient when.... being assissted by a dozer pushing on the blocks to the rear of the bowl. What is a positive grade and negative grade? Uphill slope and downhill slope Blade capacity of dozer if the load is being pushed downhill at 40% Capacity if doubled If the dozer is on positive 40% slope, what is the blade capacity, production and production? Cut in half, cut in half, double If the dozer is on negative 40% slope, what is the blade capacity, production and production? Doubles, doubles, Cut in half What is the most efficient angle of the dozer blade and why? The "A" blade or angled blade because the dozer can side cast material in a "Windrow" and position it at 90* to the line of travel. The "S" blade or bull dozer allows the material to spill over each side making less efficient than "A" blade. What is the best method of traffic control? Reflective barrels Earthwork calculation formula... Length (feet) x Width (feet) x Depth (feet)= Cubic Feet then divide by 27 to get cubic yards. What is sedimentation? When water flows down enough to allow suspended soil particles to settle What would not be covered by the Sedimentation Pollution Control Act of 1973? Agricultural activities, forestry, mining, or emergency activities essential to protect human life. Silt Fence used to control sedimentation Design and performance standard of erosion control measures shall provide protection from what? run off of 10 year storm that produces peak rate of run off When should you file a erosion and sedimentation control plan with the local government and how far in advance? When you are conducting land disturbing activity on a tract which covers one or more acres. You must do this at least 30 days prior to the start date. Who signs the erosion and sedimentation plan?