Drywall Hanger

Abstract

A connection utilizing a joist hanger to hang a joist or beam from a wood structural support member such as a top plate or header in cooperation with a first plurality of fasteners such as screws and one or more substantially vertical fire-resistant panels such as drywall.

Claims

1. A connection (1) utilizing a joist hanger (2) to hang a joist (3) from a structural support member (4) in cooperation with a first plurality of fasteners (5) and one or more generally vertical drywall panels (6), the connection (1) comprising: a. the one or more drywall panels (6) providing shielding to the structural support member (4), each having a front face (7), a back face (8) opposite the front face (7), the panels (6) being drywall panels such that they have negligible dowel bearing strength compared to the structural support member (4); b. the one or more fasteners (5) connecting the joist hanger (2) to the structural support member (4); c. the structural support member (4) having a generally vertical front face (16) and the structural support member (4) having significant dowel bearing strength compared to the one or more drywall panels (6); d. the joist (3) supported by the joist hanger (2), the joist having an end face (13) spaced away from the front face (16) of the structural support member (4); and e. the joist hanger (2) supporting the joist (3), the joist hanger (2) comprising: i. one or more back plate members (9) having one or more back faces (10) in parallel registration with the front face (6) of the wood structural support member (4); ii. a first side member (11) connected to the one or more back plate members (9); and iii. a second side member (11) connected to the one or more back plate members (9), wherein: f. portions of the one or more panels (6) are disposed between the end face (13) of the joist (3) and the structural support member (4) and the back face (8) of one panel (6) of the one or more panels (6) interfaces with the front face (16) of the structural support member (4).

2. The connection (1) of claim 1 wherein: the joist hanger has a seat member (12) interconnecting the first and second side members (11); wherein the joist (3) rests on the seat member (12) between the first and second side members (11).

3. The connection (1) of claim 1 wherein: a. the joist hanger (2) has one or more top flanges (15) connected to the one or more back plate members (9); b. the structural support member (4) has a top face (17); and the first and second top flanges (15) are fastened to the top face (17) of the structural support member (4).

4. The connection (1) of claim 1 wherein: a. each of the one or more panels (6) has a top edge face (14); b. the structural support member (4) has a top face (17); and c. portions of the top edge face (14) of each of the one or more panels (6) is located at the level of the top face (17) of the structural support member or above the top face (17) of the structural support member.

5. The connection (1) of claim 1 wherein: the first and second side members (1)1 preferably have first and second top edges (33), and side top flanges (22) are connected to the top edges (33).

6. The connection (1) of claim 1 wherein: one or more back flanges (18) are connected to one or more of the side flanges (11), the one or more back flanges (18) interfacing with the end surface 13 of the joist 3

7. The connection (1) of claim 1 wherein: the first and second side members (11) have first and second back edges (29) with the first and second back edges (29) having lower portions (31) and upper portions (32) with the first and second lower portions (31) being offset from the first and second upper portions (32), with the upper portions 32 contacting the one or more back plate members (9), and the lower portions being spaced away from the front face (16) of the structural support member (4).

8. The connection (1) of claim 7 wherein: one or more back flanges (18) are connected to one or more of the side flanges (11) at the lower portions (31) of the first and second back edges 29.

Description

DESCRIPTION OF THE DRAWINGS

[0020] FIG. 1 is an upper right perspective view of a connection formed according to the present invention.

[0021] FIG. 2 is a cross-sectional right side elevation view of the connection shown in FIG. 1.

[0022] FIG. 3 is a front elevation view of the joist hanger shown in FIG. 1.

[0023] FIG. 4 is a right side elevation view of the joist hanger shown in FIG. 1.

[0024] FIG. 5 is a left side elevation view of the joist hanger shown in FIG. 1.

[0025] FIG. 6 is a top plan view of the joist hanger shown in FIG. 1.

[0026] FIG. 7 is an upper right perspective view of an alternate joist hanger that can be used to make the connection shown in FIG. 1.

[0027] FIG. 8 is a front elevation view of the joist hanger shown in FIG. 7.

[0028] FIG. 9 is a right side elevation view of the joist hanger shown in FIG. 7.

[0029] FIG. 10 is a left side elevation view of the joist hanger shown in FIG. 4.

[0030] FIG. 11 is a top plan view of the joist hanger shown in FIG. 4.

DESCRIPTION OF THE PREFERRED EMBODIMENT

[0031] As shown in FIG. 1, the invention is a connection 1 utilizing a joist hanger 2 to hang a joist 3 from a structural support member 4 in cooperation with a one or more fasteners 5 and one or more substantially vertical drywall panels 6.

[0032] Preferably, the one or more drywall panels 6 shield the structural support member 4, and each of the one or more fire-resistant panels 6 has a front face 7, a back face 8 opposite the front face 7, and negligible dowel bearing strength. In order to show the vertically disposed studs and top plate 4 that makes up the wall the panels 6 are not shown as covering these members completely; however, preferably the panels 6 cover all of the structural members that make up the wall to a substantial degree to help protect them from fire.

[0033] Preferably, the structural support member 4 has a substantially vertical front face 16 and significant dowel bearing strength. The joist hanger 2 preferably supports the joist 3. The joist 3 has an end face 13 spaced away from the front face 16 of the structural support member 4.

[0034] Preferably, the joist hanger 2 has one or more back plate members 9. In FIGS. 1-6, the joist hanger 2 is shown with a single back plate member 9. In the embodiment shown in FIGS. 7-11, the joist hanger 2 has a second back plate member 9. The joist hanger 2 has a first side wall or side member 11, and a second side wall or side member 11.

[0035] The first back plate member 9 preferably has a first back face 10 in parallel registration with the front face 16 of the structural support member 4. Preferably, the second back plate member 9, if present, also has a second back face 10 in parallel registration with the front face 16 of the structural support member 4. The first side member 11 preferably is connected to the first back plate member 9. Preferably, the second side member 11 is connected to the first back plate member 9 or the second back plate member 9, if present.

[0036] As shown in FIG. 2, at least one of the first plurality of fasteners 5 preferably passes through the first back plate member 9 and into the structural support member 4. Preferably, at least one of the first plurality of fasteners 5 passes through the second back plate member 9, if present, and into the structural support member 4. The joist 3 preferably is supported by the joist hanger 2. Preferably, the one or more panels 6 are between the joist 3 and the structural support member 4 and the back face 8 of one panel 6 of the one or more panels 6 interfaces with the front face 16 of the structural support member 4.

[0037] The one or more back plate members 9 preferably are planar, with front faces 19 opposite the back faces 10. In the embodiment shown in FIGS. 7-11 with first and second back plate members 9, each has first and second inner edges 20 that preferably are linear, and first and second outer edges 21 opposite the first and second inner edges 20. The one or more back plate members 9 preferably have one or more top edges 24 that are oriented upwardly and first and second bottom edges 25 that are oriented downwardly. The one or more back plate members 9 preferably are formed with fastener openings 26. Although the back plate members 9 are shown as splayed outwardly in opposite directions in FIGS. 7-11, they could both be bent inwardly to face each other between the first and second side members 11, or they could both be bent in the same direction, either left or right, with one between the first and second side members 11.

[0038] The joist hanger 2 of the present invention is preferably formed from light gauge sheet steel.

[0039] The first and second side members 11 preferably are planar as well, with first and second inner faces 27 that face the joist 3, and first and second outer faces 28 opposite the first and second inner faces 27.

[0040] As shown in FIG. 7, the first and second side members 11 preferably have first and second back edges 29 that form an angular joint 47, preferably an orthogonal joint, where they meet the first and second inner edges 20 of the first and second back plate members 9. As shown in FIG. 1, the first and second back edges 29 of the first and second side members 11 form an angular joint 47 with the back plate member 9.

[0041] The first and second side members 11 preferably have first and second front edges 30 opposite the first and second back edges 29.

[0042] The first and second back edges 29 preferably have lower portions 31 and upper portions 32 with the first and second lower portions 31 being offset from the first and second upper portions 32. This creates space between the lower portion of the first and second side members 11 where the drywall panels 6 can be inserted behind the end of the joist 3 without having to notch or disturb these portions of the drywall panels 6. The side members 11 are generally L-shaped members with the upper portions extending through the drywall panels 6. As shown in FIGS. 3 and 7 back flanges 18 can be attached to the first and second lower portions 31 of the first and second back edges 29. The back flanges hold the end or end surface 13 of the joist away from the front surface 7 of the drywall panel 6 closest to the end 13 of the joist 3.

[0043] The first and second side members 11 preferably have first and second top edges 33. As shown in FIG. 7, side top flanges 22 can be connected to the top edges 33 to strengthen the side members 11. The first and second side members 11 also preferably have first and second bottom edges 34 opposite the first and second top edges 33. The first and second side members 11 preferably are formed with fastener openings 35.

[0044] The one or more panels 6 preferably are drywall panels 6. Drywall, otherwise known as plasterboard, wallboard, gypsum board, sheetrock, or gyprock, is a panel made of gypsum plaster pressed between two thick sheets of paper. It is used to make interior walls and ceilings. In the United States and Canada, drywall panels are manufactured in 48-inch wide panels in varying lengths. Common panel thicknesses are ½-inch and ⅝-inch. In the present invention, two layers of ⅝-inch drywall is preferred. Drywall is naturally fire resistant and can be used to cover and protect the structural members of a building. However, gypsum is friable and has little or no dowel bearing strength. Other panel materials and qualities are also possible.

[0045] Preferably, the joist hanger has a seat member 12 interconnecting the first and second side members 11, and the joist 3 rests on the seat member 12 between the first and second side members 11.

[0046] Preferably, the back surface 8 of the rearmost drywall panel 6 and the upper portions 32 of the back edges 29 of the side members 11 contact or are in close proximity to the front face 16 of the structural support member 4. The side members 11 extend through the drywall panels 6. The joist hanger 2 is not embedded in the structural support member 4. The seat member 12 preferably has an upper face 36 that interfaces with the joist 3. The seat member 11 also preferably has a lower face 37 opposite the upper face 36, first and second linear side edges 38, a back edge 39 that can be orthogonal to the first and second side edges 38, and a front edge 40 that can be parallel to the back edge 39. The first and second side edges 38 preferably form an angular joint 48, where they meet the first and second bottom edges 34 of the first and second side members 11.

[0047] The joist hanger 2 has one or more top flanges 15 connected to the one or more back plate members 9. The one or more top flanges 15 preferably contact the top face 17 of the structural support member 4. Preferably, the one or more top flanges 15 are fastened to the structural support member 4. The structural support member 4 preferably has a top face 17, the first and second top flanges 15 are fastened to the top face 17 of the structural support member 4. Preferably, the first and second top flanges 15 are fastened to the structural support member 5 with one or more fasteners 5. As shown these fasteners 5 can be nails.

[0048] The one or more top flanges 15 preferably are planar, with upper faces 41 and bottom faces 42 opposite the upper faces 41. Preferably, the bottom faces 42 contact the top face 17 of the structural support member 4. The one or more top flanges 15 preferably have front edges 44 and back edges 45. The front edges 44 preferably form an angular joint 49, preferably orthogonally where they meet the one or more top edges 24 of the one or more back plate members 9. The first and second top flanges 15 can be formed with fastener openings 46.

[0049] Typically, the structural support member 4 is a top plate 4 which can consist of one or more parts 50. The parts 50 of the top plate 4 can be two pieces of 2×4 or 2×6 dimensional lumber 50. The structural support member 4 can include the studs 52 that support the structural support member 4 and make up the wall.

[0050] Preferably, each of the one or more panels 6 has a top edge face 14 and the structural support member 4 has a top face 17. In the preferred embodiment, only a small notch 51 is made in the one or more drywall panels 6 between the end 13 of the joist 3 and the structural support member 4 such that most of the top edge face 14 of each of the one or more panels 6 preferably is located at the level of the top face 17 of the structural support member or above the top face 17 of the structural support member 4, thereby helping to shield and protect the structural support member 4. Similarly, the drywall panels 6 are disposed between most of the end 13 of the joist 3 and the wall of which the structural support member 4 is a part.

[0051] As shown in FIG. 7, the first back plate member 9 preferably has a first top edge 24, a first bottom edge 25, a first substantially vertical inner edge 20, a first outer edge 21 opposed to the first substantially vertical inner edge 20, and a first back face 10 adapted to be in parallel registration with the front face 16 of the structural support 4. Preferably, the second back plate member 9 also has a second top edge 24, a second bottom edge 25, a second substantially vertical inner edge 20, a second outer edge 21 opposed to the second substantially vertical inner edge 20, and a second back face 10 in parallel registration with the front face 16 of the structural support member 4.

[0052] Substantially all of the one or more back faces 10 of the one or more back plate members 9 preferably interfaces with the front face 16 of the structural support 4. The joist hanger (3) of FIGS. 1-6 is preferably formed by forming the back plate member 9 and the top flange 15 as a single piece and the seat member (12) and side members 11 as a single piece and joining the two parts together by welding. The joist hanger (3) of FIGS. 7-11 is preferably formed as a single piece of sheet metal that is bent into its final shape.