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PowerPoint ® Presentation Unit 8 Fastening Systems Nails Staples Screws Bolts Hollow-wall Fasteners Solid Concrete or Solid Masonry Wall Anchors Drive.

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Presentation on theme: "PowerPoint ® Presentation Unit 8 Fastening Systems Nails Staples Screws Bolts Hollow-wall Fasteners Solid Concrete or Solid Masonry Wall Anchors Drive."— Presentation transcript:

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2 PowerPoint ® Presentation Unit 8 Fastening Systems Nails Staples Screws Bolts Hollow-wall Fasteners Solid Concrete or Solid Masonry Wall Anchors Drive Pins and Studs Metal Connectors Adhesives

3 Unit 8 Fastening Systems Nails are available with a variety of heads and points. Flat head, diamond point nails are most often used by carpenters.

4 Unit 8 Fastening Systems Nail sizes are designated by a number and the letter d.

5 Unit 8 Fastening Systems Common nails are used most often for rough work.

6 Unit 8 Fastening Systems Masonry nails can be driven into concrete or masonry.

7 Unit 8 Fastening Systems Nails used for finish work are thinner than nails used for rough work.

8 Unit 8 Fastening Systems Wood fibers apply pressure against the shank of a nail to give a nail its holding power.

9 Unit 8 Fastening Systems Nail shanks are smooth or deformed. Deformed- shank nails provide greater holding power than smooth-shank nails.

10 Unit 8 Fastening Systems Heavy-duty staples may be used to fasten plywood sheathing and subflooring. Light-duty and medium-duty staples are used for attaching molding and other interior trim.

11 Unit 8 Fastening Systems The three basic screw heads are flat, round, and oval. Screw heads have a single slot or a recessed cross slot.

12 Unit 8 Fastening Systems A higher gauge number for screws indicates a thicker screw shank.

13 Unit 8 Fastening Systems Shank and pilot holes should be drilled when using wood screws to fasten wood pieces together.

14 Unit 8 Fastening Systems Self-tapping screws are used to fasten metal framing members to each other by tapping their own threads in the metal members.

15 Unit 8 Fastening Systems Concrete screws are used to fasten items to concrete, brick, or block without the use of additional anchors.

16 Unit 8 Fastening Systems Machine screws have greater holding power than other types of screws that fasten to metal.

17 Unit 8 Fastening Systems Panel screws have coarse, steeply pitched threads in comparison to a standard wood screw.

18 Unit 8 Fastening Systems Construction-grade panel screws are driven with coil or strip-type screwguns. An extension handle may be added to screwguns to allow carpenters to install screws from an upright position.

19 Unit 8 Fastening Systems Bolts are used to fasten together heavy wood and metal materials.

20 Unit 8 Fastening Systems The shank below a carriage bolt head is embedded in the wood.

21 Unit 8 Fastening Systems Lag bolts are often used when it is inconvenient or impossible to use a nut and bolt arrangement. A washer should be used under the head.

22 Unit 8 Fastening Systems A toggle bolt consists of a machine screw with a winged nut that folds back as the assembly is pushed through a predrilled hole in the wall.

23 Unit 8 Fastening Systems When installing a screw anchor in a hollow wall, the shield spreads and flattens against the interior of the wall as the screw is tightened.

24 Unit 8 Fastening Systems A wallboard anchor does not require predrilling prior to installation.

25 Unit 8 Fastening Systems A rotary hammer may be used to drill holes in concrete.

26 Unit 8 Fastening Systems A variety of masonry and core bits are used with electric drills or rotary hammers.

27 Unit 8 Fastening Systems Light duty plastic anchors are used with wood or sheet metal screws.

28 Unit 8 Fastening Systems Light duty lead alloy anchors are used with lag, wood, or sheet-metal screws.

29 Unit 8 Fastening Systems The anchor of a hammer- driven anchor expands as the expander pin is driven in.

30 Unit 8 Fastening Systems The slotted head of a hammer driven nylon anchor allows the expander pin to be removed with a screwdriver.

31 Unit 8 Fastening Systems When installing a lag bolt expansion shield, the shield expands as the bolt is tightened.

32 Unit 8 Fastening Systems A heavy-duty machine bolt expansion shield expands at both ends to distribute the anchor load.

33 Unit 8 Fastening Systems The expansion plug expands the steel anchor as the anchor is driven onto the plug with a setting tool.

34 Unit 8 Fastening Systems A self-drilling anchor is placed in a special chuck head that is adapted for a rotary hammer.

35 Unit 8 Fastening Systems Stud-bolt anchors are used to fasten large equipment and machinery in place.

36 Unit 8 Fastening Systems A tube-dispensed adhesive is mixed as it is forced down the nozzle.

37 Unit 8 Fastening Systems A glass capsule adhesive anchor consists of a sealed glass capsule containing an adhesive mixture, a stud-bolt, and a nut and washer.

38 Unit 8 Fastening Systems Many types of drive pins and studs can be driven into concrete or other masonry.

39 Unit 8 Fastening Systems A powder actuated tool is used to drive pins and studs into concrete or other masonry.

40 Unit 8 Fastening Systems Metal fasteners are used to tie together members in wood framed construction.

41 Unit 8 Fastening Systems Metal connectors aligned vertically provide the most effective protection against wind damage.

42 Unit 8 Fastening Systems Manufacturers may stamp the recommended nail size on metal connectors.

43 Unit 8 Fastening Systems A pneumatic nailer must be fitted with a hole-locating mechanism or be designed to expose the nail tip when driving nails for metal connectors.

44 Unit 8 Fastening Systems Machine bolts may be used to fasten metal connectors to larger framing members.

45 Unit 8 Fastening Systems Glue is used to help fasten the joints of cabinets.

46 Unit 8 Fastening Systems Tubes that fit into caulking guns are the most convenient way of applying mastics to the upper surfaces of floor joists.

47 Unit 8 Fastening Systems When panels with tongue-and-groove edges are used for a subfloor, the mastic is placed in the grooves and on top of the joists.


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