Can someone help read the beam from Structural drawing
RoopMallik
| Posted in Construction Techniques on
I need to help to read with beam 31/2 X14 on the diagram. I have marked with red on below that beam. Is that bean run only to length of red line that I marked or it is running entire length marked in Blue or just partially as marked in green? There is difference of opinion in contractor and framer. Thanks for your help
Replies
Pretty sure it is the green line. Note that in the stairwell the there is only a 1 3/4 x 14 lsl, but after the end of the stairwell wall it appears to transition to the 3 1/2 x 14 lsl. Why is there a 4x4 in the wall at the other end of the black line except to bear the other end of the flush 3 1/2 x 14 lsl beam? And why is the black line continue un-marked beyond the end of the red line if the beam is supposed to end at the end of
the red line?
The structural engineer needs to clarify. And there have been at least 5 revisions on these drawings so go back to the source.
Hints: 1. As a flush beam it is receiving the 14" joists along the entire length, 2. it is 14" deep so it can span a long way. 3. Neither the 2 2x studs or 4x4 are very good posts to splice over at these loads without some type of post cap. 4. (Blue & Green) As a multi-span beam upward crushing factors in at posts but mid posts can help keep beam depth to a minimum. As many simple beams (Red) not so much. 5. Do you have a beam schedule? 6. Review the sections & details and their notes along this beam: 23/SD4 {CS16}, 6/SD6, 1/SD5 {rev.5}, 6/SD5.
My SWAGuess would be that the 2 pieced LSL could be continuous for BLUE with a 3rd piece added at the BLUE ONLY section.
Truly, only the person who knows all the loads applied (industrial, office, residential?) and the spans (no dimensions given) can give you the straight answer.