GB2531430A

GB2531430A - I-beam joist hanger

Info

Publication number: GB2531430A
Application number: GB1517293.5A
Authority: GB
Inventors: Ronald Sammons; Luke Richard John Whale
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-10-03
Filing date: 2015-09-30
Publication date: 2016-04-20
Also published as: GB201417559D0; GB201517293D0

Abstract

The joist hanger has a stirrup 4 with first flanges 6 extending from it to form a support 7 for a joist 3; second flanges 8 extend at an angle from the first to lie flat against a beam 10 from which the joist is to be hung, the second flanges have a pair of tabs 15,16 extending in an opposite direction to the first flanges for fitting between flanges 19,20 on the beam, to assist with location of the hanger. The hanger may be pushed into place on the beam, held in place by friction. The tabs and flanges may have ribs 22 to assist with grip. The tabs may be stamped out at the edge or in the middle of the second flanges. The second flanges may extend over the top of the beam, both flanges may have apertures 14 for nails to pass through to assist with fixing in place.

Description

I-BEAM JOIST HANGER

The present invention relates to an I-beam joist hanger.

Conventional joist hangers comprise two sides and a stirrup. The sides thrn up from the stirrup and are bent into two angled flats along at least part of their length.

Above the stirrup, two of the flats, the first flats, extend parallel with the joist to be hung, on opposite sides of it. These flats may or may not extend to the hill height of the joist to be hung. The second two flats angled from the first flats extend parallel to the beam from which the joist is to be hung. In use the flats are nailed to the joist and beam. The tops of the second flats are usually bent onto the top of the beam and nailed there.

I-beam joist hangers are known to be provided with tabs to be bent from the is second flats to lie on and be fixed to the bottom flange. This bending of the tabs is intended to be carried out during the fixing of the hanger to the beam.

The object of the present invention is to provide an improved I-beam joist hanger.

According to the invention there is provided an I-beam joist hanger comprising: * a stirrup; * first flats extending from the stirrup to provide a pocket for the end of ajoist to be hung; * second flats angled with respect to the first flats to lie against a beam from which the joist is to be hung; wherein: * the second flats are provided with a pair of tabs extending oppositely from the first flats for fining between the two flanges of the beam for preliminary location of the hanger on the beam.

In use the hanger is offered up to the beam in the intended position of the end of the joist and pressed into abutment of the second flats with the flanges of the beam.

The tabs grip the flanges and locate the hanger, which can then be fixed, usually with nails.

The tabs can be plain or provided with ribs to enhance gripping.

The flats and the stirrup can be plain or ribbed for their stiffening.

The tabs can be provided at the edges of the second flats, but are preferably provided within the width of the second flats, with fingers of the flats extending at both sides of apertures from which the tabs are stamped.

The hanger can be provided with excess length of the second flats for bending is onto the top flange of the beam and fixing there.

Normally the flats will be provided with nail apertures.

To help understanding of the invention, a specific embodiment thereof will now be described by way of example and with reference to the accompanying drawings, in which: Figure 1 is a perspective view of an I-beam joist hanger of the invention; Figure 2 is a cross-sectional side view of the joist hanger, taken through location tabs; and Figure 3 is a cross-sectional plan view of the joist hanger, taken through location tab apertures.

Referring to the drawings, a joist hanger 1 is shown in Figure 1 nailed to a timber I-beam 2 and supporting a joist 3, which can be plain or an I-beam.

The hanger has a stirrup 4 extending below the end 5 ofthe joist. First flats 6 of the hanger extend up the sides of the joist defining a pocket 7 in which the end is received.

The first flats have second flats 8 bent at right angles to them to lie against the outer side faces 9 of the top and bottom flanges 10,11 of the beam, The tops 12 of the second flats are bent on installation onto the top, outer face of the top flange. The flats are provided with nail holes 14 via which the hanger is nailed in position.

At mid width of the second flats, upper and lower tabs 15, 16 are bent from the flats, leaving apertures 17 with fingers 18 of the flats extending alongside. The tabs are arranged at the distance of the inner faces 19,20 of the top and bottom flanges 10,11 of the beam.

hi use the hanger is offered up to the beam in the intended position of the end of the joist and pressed into abutment of the second flats with the flanges of the beam.

The tabs are plain. They and the flats are provided with ribbing 21 to stiffen their angular orientation. The flats and the stirrup are provided with stiffening ribs 22.

The hanger is made of galvanised steel sheet.

It should be noted that not only is the above described joist hanger easier to install in view of staying in the position to which it is offered up before nailing, but also the tabs accurately position the hanger with respect to the I-beam flanges. There is a tendency for the weight of a hung joist and that of the floor which it supports etc. to twist the flanges of the I-beam with respect to the intervening web of the beam.

With the tops of the second flats bent onto the top face of the top flange, the hanger is positively fitted to the top flange whilst the bottom tab is in abutment with the top face of the lower flange. The result is that the hanger positively interconnects the two flanges and causes them to share the load applied to be the beam from the joist and share the tendency for the flanges to be twisted with respect to the web of the beam.

Claims

CLAIMS: 1. An I-beam joist hanger comprising: * a stirrup; * first flats extending from the stirrup to provide a pocket for the end of ajoist to be hung; * second flats angled with respect to the first fiats to lie against a beam from which the joist is to be hung; * wherein: * the second flats are provided with a pair of tabs extending oppositely from the first flats for fitting between the two flanges of the beam for preliminary location of the hanger on the beam.
2. An I-beam joist hanger according to claim I, wherein, in use the hanger is offered up to the beam in the intended position of the end of the joist and pressed into abutment of the second flats with the flanges of the beam.
3. An I-beam joist hanger according to claim 2, wherein the tabs grip the flanges and locate the hanger.
4. An I-beam joist hanger according to any preceding claim wherein the tabs are plain.
5. An I-beam joist hanger according to any of claims ito 4, wherein the tabs are provided with ribs.
6+ An I-beam joist hanger according to any preceding claim, wherein the flats and/or the stirrup are plain.
7. An I-beam joist hanger according to any one of claims 1 to 5, wherein the flats and/or the stirrup are ribbed.
8. An I-beam joist hanger according to any preceding claim, wherein the tabs are provided at the edges of the second flats.
9. An I-beam joist hanger according to any one of claims ito 7, wherein the tabs are provided within the width of the second flats, with fingers of the flats extending at both sides of apertures from which the tabs are stamped.
10. An I-beam joist according to any preceding claim, wherein the hanger is provided with excess length of the second flats for bending onto the top flange of the beam and fixing there.
11. An I-beam joist according to any preceding claim, wherein the flats are provided with nail apertures.