Bottom flange hanger

Abstract

A joist hanger for use in the construction industry comprises first and second side flanges, a seat, at least one back flange and at least one bottom flange; wherein the seat is provided between the first and second side flanges to form a stirrup for supporting a first joist; a back flange adjoins at least one of the side flanges in a plane approximately perpendicular to planes including the adjoining side flange and the seat; a bottom flange adjoins the back flange proximal to the seat and in a plane approximately parallel to a plane including the seat; and the back flange and the bottom flange form a bracket for abutting a lower surface and a side surface of a second joist.

1 . A joist hanger, comprising: 
 first and second side flanges;    at least one back flange;    at least one bottom flange;    a seat provided between the first and second side flanges to form a stirrup for supporting a first joist;    wherein 
 a back flange adjoins at least one of the side flanges in a plane approximately perpendicular to planes including the adjoining side flange and the seat;  
 a bottom flange adjoins the back flange proximal to the seat and in a plane approximately parallel to a plane including the seat; and  
 the back flange and the bottom flange form a bracket for abutting a lower surface and a side surface of a second joist.  
   
   
   
       2 . A joist hanger according to  claim 1  wherein at least one of the side flanges defines one or more fixing apertures for receiving a fixing.  
   
   
       3 . A joist hanger according to  claim 1  wherein the seat defines one or more fixing apertures for receiving a fixing.  
   
   
       4 . A joist hanger according to  claim 3  where the fixing apertures are staggered.  
   
   
       5 . A joist hanger according to  claim 1  wherein at least one of the back flanges defines one or more fixing apertures for receiving a fixing.  
   
   
       6 . A joist hanger according  claim 1  wherein the bottom flange(s) define(s) one or more fixing apertures for receiving a fixing.  
   
   
       7 . A joist hanger according to  claim 1  wherein the stirrup comprises a mouth and is tapered in width from the mouth.  
   
   
       8 . A joist hanger according to  claim 1  which comprises at least one lower return leg which adjoins the bottom flange.  
   
   
       9 . A joist hanger according to  claim 8  wherein the lower return leg comprises a flange, and the back flange bottom flange and lower return leg form a bracket.  
   
   
       10 . A joist hanger according to  claim 9  wherein the lower return leg defines one or more fixing apertures for receiving a fixing.  
   
   
       11 . A joist hanger according to  claim 1  wherein each said flange is formed from a single piece of material.  
   
   
       12 . A joist hanger according to  claim 1  wherein each said flange is formed of steel.  
   
   
       13 . A joist hanger of  claim 1 , including at least one top flange which adjoins a back flange distal to the seat and in a plane approximately parallel to a plane including the seat.  
   
   
       14 . A joist hanger of  claim 13  wherein the bottom flange, back flange, and top flange form a bracket for abutting a lower surface, a side surface and an upper surface of a joist.  
   
   
       15 . A joist hanger according to  claim 13  wherein the flange defines one or more fixing apertures for receiving a fixing.  
   
   
       16 . A joist hanger according to  claim 13  comprising at least one upper return leg which adjoins the top flange and wherein the upper return leg comprises a flange.  
   
   
       17 . A joist hanger according to  claim 16  wherein the back flange, top flange, and upper return leg form a bracket.  
   
   
       18 . A method, for connecting first and second joists, comprising: 
 fixing a joist hanger to a first joist including attaching at least one of a first and second side flanges, at least one back flange; at least one bottom flange to said first joist; and    fixing the second joist to the joist hanger, including resting said second joist in a seat provided between the first and second side flanges to form a stirrup for supporting a first joist.    
   
   
       19 . A joist hanger, comprising: 
 first and second side flanges, a seat, at least one back flange and at least one bottom flange;    wherein the seat is provided between the first and second side flanges to form a stirrup for supporting a first joist;    wherein a back flange adjoins at least one of the side flanges in a plane approximately perpendicular to planes including the adjoining side flange and the seat; and    wherein a bottom flange adjoins the back flange; and the back flange and the bottom flange form a bracket for abutting a second joist.