Rotation of Steel Lintels Supporting Brick Veneer
Rotation of Steel Lintels Supporting Brick Veneer
(OP)
I have several questions regarding steel lintels w/ bottom plates that support masonry with a brick veneer.
1. Could someone please tell me how to calculate the angle of rotation for W-flange sections and Tube sections that are loaded torsionally?
2. What is an acceptable amount of vertical movement of the plate supporting the brick due to rotation, say at the centerline of the brick veneer? Do you use L/600? Is the vertical deflection due to normal flexural loading additive with the deflection due to the torsional rotation and the deflection of the plate itself due to bending. Does this total need to be less than L/600?
Any help would be greatly appreciated.
1. Could someone please tell me how to calculate the angle of rotation for W-flange sections and Tube sections that are loaded torsionally?
2. What is an acceptable amount of vertical movement of the plate supporting the brick due to rotation, say at the centerline of the brick veneer? Do you use L/600? Is the vertical deflection due to normal flexural loading additive with the deflection due to the torsional rotation and the deflection of the plate itself due to bending. Does this total need to be less than L/600?
Any help would be greatly appreciated.






RE: Rotation of Steel Lintels Supporting Brick Veneer
You will need to define end boundary conditions torsionally. You have only three end conditions to consider, free (flange and web are free to warp and rotate), fixed flange and web are prevented from rotating) and last pinned (web is prevented from rotating and the flanges are free to warp)
Good luck
RE: Rotation of Steel Lintels Supporting Brick Veneer
RE: Rotation of Steel Lintels Supporting Brick Veneer
DaveAtkins
RE: Rotation of Steel Lintels Supporting Brick Veneer
As for the deflection limit, I would suggest that you should consider the visual appearence of the facing brick wall, in our projects the mortar joins in facing brick walls are usually 10mm, therefore if the supporting plate & lintel deflects considerably more than this, from a distance you will notice the facing brick wall bowing even at relativley small deflections of say 25mm.