Detailing question
Detailing question
(OP)
This is my first wood job. I need some help.
I have a wood beam atop a steel beam w/ a 3X nailer. The beam is 6.75" wide and the nailer is about 8" wide. The total downward gravity load is abut 15 k.
Am I right in assuming the area to determine the crushing would be 6.75"x8" ?
Would a single Simpson H2.5A and Simpson A35 be sufficient to hold the beam on the nailer since there is no crushing. The beam is about 40' long and has a deflection of 1.25".
I have a wood beam atop a steel beam w/ a 3X nailer. The beam is 6.75" wide and the nailer is about 8" wide. The total downward gravity load is abut 15 k.
Am I right in assuming the area to determine the crushing would be 6.75"x8" ?
Would a single Simpson H2.5A and Simpson A35 be sufficient to hold the beam on the nailer since there is no crushing. The beam is about 40' long and has a deflection of 1.25".






RE: Detailing question
RE: Detailing question
RE: Detailing question
Never, but never question engineer's judgement
RE: Detailing question
RE: Detailing question
Figure those out and you can design a connection. One thought is to drill thru I-beam and use lag bolts?? Or weld brackets to I-beam and lag those.
RE: Detailing question
Mike McCann
MMC Engineering
RE: Detailing question
You have two things to check on this connection:
1. The bearing stress at the bottom of the GLB and the 3x8 nailer vs Fc perpendicular. The area would be 7.5"x6.75".
2. The load and design of the connection as required in ASCE7-05 Sections 12.1.1, 12.1.2, 12.1.3 & 12.1.4
These Sections in ASCE7 apply to any materials like wood, steel, reinforced concrete, etc. that the structure is framed with.