Construction and Carpentry Techniques: Roofing, Stairs, and Safety Measures, Exams of Advanced Education

Download Construction and Carpentry Techniques: Roofing, Stairs, and Safety Measures and more Exams Advanced Education in PDF only on Docsity! NOCTI CARPENTRY -with 100% verified solutions 2024-2025 Tutor verified What are plywood clips used for? Supporting roof sheathing edges between the trusses - clips are used when sheathing roofs framed with trusses due to being 24 inch on center. The clip holds the plywood from being too weak between spans. a contractor is to excavate a basement containing 58,500 cu. gt. she removes 3,950. cu ft, then 9,325 cu ft, then 6581 cu ft and finally 4,873 cu ft. How many cubic feet remain in the basement? The answer is calculated by subtracting each of the cu ft dimensions from the total. 33,771 What is PL-400 Type of construction adhesive. PL400 is a construction adhesive used in securing plywood to joist and other wood to wood surfaces A wood auger bit marked 10 will drill with what diameter? 5/8" - it is calculated by 1/16 scale so #10 would be 10/16 inch or 5/8" The path a saw blade cuts in a piece of wood is called KERF - this is the narrow channel left behind by the saw and the measure of its width. Factors are blade, blade teeth, and wobble of cut. When squaring up a large rectangular object, which method would be the least acceptable to use? Framing square, large rectangular objects are squared by either using the 3-4-5 method, or by taking diagonal measurements. The framing square is too small for large areas. When nailing 2x6 inch joists, what nail should be used? 12d - 12d common nails are standard fasteners for any 2x4,6,8,10, 12 application. There are 808 4-penny nails in a pound. How many are there in 22 3/4 pounds? 18.383 Simply multiply 808 x 22.75 to calculate the answer How many pieces of lumber 1 inch wide will be needed to cover a 42-inch wide space? 42 - that is if the lumber is actually 1" wide - remember nominal size is not 1 " but rather 3/4" How many 2x4 blocks 22 1/2 inches long can be cut from a 2x4 that is 8' long? 4 - divide 22.5 into 96" and your answer will be 4 with 7" left (there answer says divide by 22.75???) 4 with 7" left over??? What is one-half of 23 feet and 11 9/16"? 11'-11 25/32" - you need to divide 23'11 9/16" by 2. Change fraction to decimal and decimal to fraction Add 15'-6 3/4" + 5'-11 5/8" + 11' 5 7/16" + 6' 9 3/16" 39' 9" - add all four dimensions together chancing fractions to 16th to calculate answer (15' 6 12/16" + 5'11 10/16" + .... a lot measure 112'-5" x 88'-3" x 97'-6" x 114' -2" - what is the distance around the lot? add all 4 measurements - total all inches and change to feet before calculating 411' 16" = 412'4" total run total horizontal distance the stairway covers unit rise the height of an individual step unit run the depth of a single rough cut stairwell floor opening that the stair system passes through the color commonly used for information signs is BLUE where must the SDS (safety data sheet) for any chemical used at a job site be located? at the job site a barrier with yellow and purple markings indicates a radiation hazard Are positioning lanyards used only as fall restraint devices and may not be used as fall arrest devices? true how far from the wall should the base of the ladder be? 1/4 length of the ladder if a scaffold has a yellow tag, it means safety harness must be warn the type of soil most likely to result in a trench cave-in is Type C - Type of soil; Weight of the soil; Moisture content of soil and height of the surrounding water table; Changes in weather, and freezing and thawing of soil; Vibrations and/or weight from vehicles and adjoining structures. 4 soil classifications Stable Rock - A stable rock formation is normally a solid mineral or material that can be excavated with side walls that are vertical. Additionally, soil that is rock will remain intact and not fall apart when exposed to the weather. Type A Soil - The next most stable type of soil, Type A, is normally defined as a clay or sandy clay soil. It is fairly stable and holds up well when exposed to the elements. Type A soil is cohesive in nature, but does not contain any fissures. Lastly, Type A soil cannot be subjected to vibration from heavy traffic, or have been previously disturbed or dug. If such is the case, the Type A soil is automatically downgraded to the next lower soil classification (Type B). Type B Soil - Commonly including angular gravel, silt, and sandy loam, type B soil is somewhat cohesive but has a lower compressive strength than a Type A. As the case with Type A soil, any previously disturbed Type B soil drops a category to Type C because of the changes in soil characteristics. Type C Soil - Often referred to as “plain” or “farmers” dirt, Type C usually has some combination of loose gravel, sand, or loam; sometimes with water leaching from it. Type C soil can be cohesive, but breaks down easily when exposed to the weather. This is the most dangerous type of soil for trenching operations because it is the weakest, and requires that the most stringent protective measures. the purpose of a double insulating electrically powered tool is to protect users from electrical shock when a lockout is performed, the key to the lock is kept by the person who applied the tag personnel working in the vicinity of arc welding work must wear eye protection with tinted lenses true used to drive nails and to pull nails out of wood claw hammer used to cut on a slant at an angle that is not a right angle bevel has a 12 inch blade that moves through a head that is marked with 45 degree & 90 degree angle measures combination square ripping bar used for heavyt-duty dismantling of woodwork bell faced hammer a claw hammer w slightly rounded face foot-pounds per second A U.S. Costomary unit of power. Inch-pounds Unit of measure used to describe the amount of pressure exerted (torque) to tighten a small object. joint A place in the body where two bones come together Kerf A cut or channel made by a saw. combination wrench A wrench that has a box-end wrench on one end and an open-end wrench on the other side. Walers Horizontal pieces placed on the outsides of the form walls to strengthen and stiffen the walls. The form ties are also fastened to the walers. Joist hangers are used for which of the following? Supporting joists against beams 3.What type of hammer is commonly selected for trim work? d. 16-ounce wood handle curved claw 4.What are plywood clips used for? c. Supporting roof sheathing edges between the trusses What is PL-400? b. Type of construction adhesive Which is not a rule for laying out stairs? b. The sum of two risers is always the same. What are 3 rules for laying out stairs? 1. The product obtained by multiplying one rise height by the tread 2. the sum of two risers is always the same 3. the sum of one riser and one tread should be between 17 & 18 inches a wood auger bit marked 10 will drill what diameter? 5/8" - it is calculated by 1/16 so #10 would be 10/16 or 5/8" 6-8-10 method To get a perfectly square corner, you want to aim for a measurement ratio of 3:4:5. In other words, you want a three-foot length on your straight line, a four-foot length on your perpendicular line, and a five-foot length across. If all three measurements are correct, you'll have a perfectly square corner.Apr 14, 2020 Under OSHA fall protection regulations, a worker must wear the required protective equipment at ___ feet or higher 10 how do you prevent kickback from a table saw properly support materials How do you safely lift knees and legs who provides safety training for all tools and equipment contractor how often should you inspect rigging equipment? each day of shift how far should an extension ladder extend above a roof? A ladder should extend 3 feet above the roof if you are going to climb onto the roof. One foot is enough if you are just working on the ladder. A ladder should be set one fourth of it's working height (point where it is touching the wall, or the edge of the roof) away from the wall.Jun 24, 2001 Bottom of ladder should be 1/4 of the ladder's working length away from the wall what does OSHA stand for? Occupational Safety and Health Administration At what height do you need toe boards and guard rails on scaffolding 6 feet You must protect your employees from fall hazards whenever an employee is working 6 feet or more above a lower level. If an employee is working on a scaffold, the height requirement for fall protection is 10 feet, and this protection usually is provided by a built-in guardrail.May 1, 2010 Hard hat inspection of shell and suspension The hard hat consists of two components: the shell and the suspension. Both require inspection during assembly and before each use. During shell inspection, you should look for cracks, nicks, dents, gouges, and any damage caused by impact, penetration, abrasions, or rough treatment. MSDS Material Safety Data Sheet; contains information on the possible health effects of exposure to chemicals MSDS does not contain installation instructions, warranty, price, coverage When hoisting materials up a ladder use a bucket and a rope when using power tools in dampe areas: always use a GFCI - ground fault circuit interupter double insulated tools (circle within a circle) means the motor is insulated from the case Why is it called a 10 inch table saw? Because that is the largest blade it will take sliding t bevel A tool used for setting and transferring angles. The handle is usually made of wood or plastic and is connected to a metal blade with a thumbscrew or wing nut. The blade pivots and can be locked at any angle by loosening or tightening the thumbscrew. speed square A trianglular marking tool containing both 90 and 45 degree angles. It has a flange on one side so you can "square" it against the material. combination square determining 45 and 90 degree angles what determines the size of a belt sander? plot plan a diagram showing the existing or proposed use of parcel of land. This will show improvements on land. plot plans show shape of lot, grade, contour lines, and location of a building on a lot foundation plan Shows the foundation size, materials, excavation information, waterproofing, and supporting structures. piers, girders floor plan A sectional view that shows a floor from a point four feet above the finished floor level. roof slope symbol The triangular symbol above the roof line in this architectural elevation provides information on the roof's slope. Slope is expressed: as a ratio; and. in inches per foot. estimating studs or joists @ 16 inches on center 16" oc == DIVIDE BY 1.33 + 1 , 2' oc = DIVIDE BY 2 + 1 Benchmark point of known elevation batter boards The horizontal boards nailed to corner post to assist in the accurate layout of foundation and excavation lines Beam pocket a recess, formed into a foundation, designed to receive the end of a beam/ girder recess in concrete wall to receive a girder footings always below frost line how are concrete walls anchored to footing steel dowels or keyways When setting forms to a string what does the string represent string represent the concrete edge and the elevation why do you build forms with duplex nails so they are easier to strip forms clean and repair between uses, oil before pouring Whalers A horizontal timber or beam used to brace or support an upright member, as sheeting, formwork for concrete, etc. (See illustration p. 1052.) hydration when concrete hardens - caused by a chemical reaction between water and cement how is concrete purchased cubic yard - figure cubic feet and divide by 27 where is the greatest pressure on forms at the bottom concrete consists of sand, gravel water and cement - everything else is an admixture - they may try to trick you with clay, chloride, plastarsizer sill plate that touch concrete must be pressure, green or chemically treated rule of thumb 1 riser + 1 tread should equal 17-18" trim bottom of stringer thickness of tread frieze boards horizontal boards you see a thetop of your siding right where it meets the eave or soffit line. Today, most frieze boards are decorative soffit the underside of an architectural structure such as an arch, a balcony, or overhanging eaves. fascia bind your roof eaves or overhangs, giving them lateral rigidity. they keep your roof's lower line together and prevent sagging and separation what type of nails should you use for ext finish galvanized where is frieze molding installed between the soffit and wall Frieze moldings, also known as frieze boards, are mounted below the eaves of roof planes and can be generated automatically using the Build Roof dialog. Asphalt Shingles Roof shingles made of asphalt-saturated felt and covered with mineral granules. starter course, cut off tabs, place seal strip @ edge of roof standard exposure 5" 3 types of valleys open, woven and closed cut flashing aluminum, copper, galvanized use at least 4 nails