Truss assembly with alignment guides
A truss assembly ( 12 ) has a plurality of structural members joined by a truss joint. The truss joint includes first ( 16 ) and second ( 18 ) structural members and a pair of shear plates ( 22 ). Each shear plate ( 22 ) includes at least one shear tab ( 24 ) having a curved alignment guide ( 40 ) formed by an elongated slot with an open end. An end of the second structural member ( 18 ) has a locating hole ( 42 ) proximate its mounting bolt hole. The truss assembly further includes an alignment/drift pin ( 44 ) used to position the second structural member ( 18 ) with respect to the shear plates ( 22 ). The alignment/drift pin ( 44 ) is configured to be inserted into the locating hole ( 42 ) and then maneuverable into the alignment guide ( 40 ) to position the second structural member ( 18 ) so that mounting bolt holes in the shear plates ( 22 ) and a mounting bolt hole in the second structural member ( 18 ) align allowing insertion of a through bolt ( 30 ).
1. A truss assembly formed with a plurality of structural members joined by at least one truss joint, the truss joint comprising:
a first structural member;
a second structural member having a first end, said first end being adjacent the first structural member, wherein the second structural member has a second structural member mounting bolt hole formed therein at the first end;
a pair of shear plates, each shear plate connected to the first structural member and positioned such that one of said pair of shear plates abuts a first side of the first end of the second structural member and the other of said pair of shear plates abuts an opposing second side of the first end of the second structural member, wherein each shear plate comprises at least one shear tab, the shear tab having a shear plate mounting bolt hole formed therein;
a through bolt running through the shear plate mounting bolt holes in the shear plates and the second structural member mounting bolt hole in the second structural member;
wherein the at least one shear tab has a curved alignment guide comprising an elongated slot with an open end formed in the shear tab;
wherein the first end of the second structural member has a locating hole proximate the second structural member mounting bolt hole in said second structural member; and
the truss assembly further comprising an alignment/drift pin used to position the second structural member with respect to the shear plates, wherein the alignment/drift pin is configured to be inserted into the locating hole and then maneuvered into the alignment guide to position the second structural member so that the shear plate mounting bolt holes in the shear plates and the second structural member mounting bolt hole in the second structural member align allowing insertion of the through bolt.
2. The truss assembly of claim 1 wherein the shear plates are connected to the first structural member with at least one mounting bolt running through aligned shear plate mounting holes in each of the shear plates and a first structural member mounting hole in the first structural member.
3. The truss assembly of claim 1 wherein the alignment/drift pin is not a load bearing component that transfers load between the second structural members and the shear plates.
4. The truss assembly of claim 1 wherein the alignment/drift pin is removed from the locating hole and the alignment guide after the through bolt is inserted through the shear plate mounting bolt holes in the shear plates and the second structural member mounting bolt hole in the second structural member.
5. The truss assembly of claim 1 wherein the joint connection consists of only a single through bolt connecting the second structural member to the pair of shear plates.
6. The truss assembly of claim 1 further comprising:
a third structural member having a first end, said first end being adjacent the first structural member, wherein the third structural member has a third structural member mounting bolt hole formed therein at the first end, wherein the each shear plate is further positioned such that one of said pair of shear plates abuts a first side of the first end of the third structural member and the other of said pair of shear plates abuts an opposing second side of the first end of the third structural member, wherein each shear plate comprises a first shear tab for said second structural member and a second shear tab for said third structural member, each shear tab having a shear plate mounting bolt hole formed therein;
a second through bolt running through the shear plate mounting bolt holes in the shear plates and the third structural member mounting bolt hole in the third structural member;
wherein each shear tab has a curved alignment guide comprising an elongated slot with an open end formed in the shear tab; and
wherein the first end of the third structural member has a locating hole proximate the third structural member mounting bolt hole in said third structural member.