Power Point Presentation Unit 9 Measuring and Layout

Power. Point® Presentation Unit 9 Measuring and Layout Tools Tapes and Rules • Leveling and Plumbing Tools • Squaring Tools • Marking and Scribing Tools

Unit 9 — Measuring and Layout Tools A tape measure is used for many measuring and layout jobs.

Unit 9 — Measuring and Layout Tools Tape measures are available that show English measurement on one edge and metric measurement on the other edge.

Unit 9 — Measuring and Layout Tools A steel tape is used to measure long distances.

Unit 9 — Measuring and Layout Tools A plumb (vertical) line is always at a 90° angle to a level (horizontal) line.

Unit 9 — Measuring and Layout Tools Lightweight aluminum or magnesium carpenter’s levels are generally preferred over older wood types.

Unit 9 — Measuring and Layout Tools The center vial of a carpenter’s level is used for leveling. The end vials are used for plumbing. To ensure an accurate level reading, look straight into the vial and not at an angle.

Unit 9 — Measuring and Layout Tools A carpenter’s level should be periodically checked for accuracy.

Unit 9 — Measuring and Layout Tools The arm of a plate level can be extended to plumb a wall from the bottom plate to the top plate.

Unit 9 — Measuring and Layout Tools A straightedge consisting of a piece of 3/4″ plywood with blocks at the ends and a carpenter’s level is often used when leveling or plumbing over a long distance.

Unit 9 — Measuring and Layout Tools A laser hand level is used to transfer locations from one surface to another surface which is nearby.

Unit 9 — Measuring and Layout Tools A line level has hooks so that it can be attached to a tightly stretched string.

Unit 9 — Measuring and Layout Tools A water level is a convenient tool to use to determine a level location in another room or otherwise obstructed location. Water levels are based on the principle that water will find its own level in a system open to atmospheric pressure.

Unit 9 — Measuring and Layout Tools When using a plumb bob to plumb a wall, the distance between the line and the top of the wall is equal to the distance between the point of the plumb bob and the bottom of the wall.

Unit 9 — Measuring and Layout Tools Square cuts are required when framing walls and ceilings.

Unit 9 — Measuring and Layout Tools Trim pieces, such as this casing, are typically mitered at 45°.

Unit 9 — Measuring and Layout Tools A combination square is used to lay out 90° and 45° angles.

Unit 9 — Measuring and Layout Tools Set the combination square to the desired position and guide the head along the edge of a board while holding a pencil along the end of the blade.

Unit 9 — Measuring and Layout Tools The face of a framing square may include rafter and octagon tables.

Unit 9 — Measuring and Layout Tools The back of a framing square may include Essex board measure and brace measure tables.

Unit 9 — Measuring and Layout Tools Framing square applications include squaring a line across a wide board, marking a 45° angle across a wide board, and checking an inside corner for squareness.

Unit 9 — Measuring and Layout Tools The octagon table is used to shape squared lumber or timbers into an octagonal shape.

Unit 9 — Measuring and Layout Tools The protractor scale of a Speed® Square is used to lay out angles ranging from 0° to 90°. The common, hip, and valley scales are used to lay out the plumb and seat cuts for common, hip, and valley roof rafters.

Unit 9 — Measuring and Layout Tools A sliding T-bevel is used to transfer angles. The wing nut tightens the blade in place.

Unit 9 — Measuring and Layout Tools A try square is used to lay out 90° angles.

Unit 9 — Measuring and Layout Tools An angle divider is used to lay out miter cuts on molding for walls that meet at angles other than 90°. First, the angle divider is adjusted to fit the inside corner. Then it is used to mark the miter cut on the molding.

Unit 9 — Measuring and Layout Tools A scriber is used to mark a line when a close fit is required between the edge of a piece of material and an irregular surface.

Unit 9 — Measuring and Layout Tools Dividers are used to draw arcs and circles and can also be used as a scriber.

Unit 9 — Measuring and Layout Tools A scratch awl is used to start holes for wood screws or mark lines on materials that will not show a pencil line.

Unit 9 — Measuring and Layout Tools A center punch is used to mark holes to be drilled in hard wood or metal.

Unit 9 — Measuring and Layout Tools Square gauges are attached to a framing square to lay out angle cuts for roof rafters as well as tread and riser cuts for stair stringers.

Unit 9 — Measuring and Layout Tools A chalk line reel is used to snap straight lines on flat surfaces.