Hi all,
Is any Italian-speaking engineer able to explain what the letters A1, B1 and A2,B2 represent in the attached diagram?
I can follow all the other headings but it's just those that fox me.
Thanks.
Hi all,
I frequently have to detail a fabricated beam consisting of a wide-flange section with welded plate underneath, carrying two loads. Naturally, there will be some torsion. To allow for this, I have normally (lazily) just taken moments about the web to find the net moment and then found...
Hi all,
Steel beam spanning 9.6m in masonry opening, simply-supported on the masonry each end. Top flange is adequately restrained by two incoming steel beams; the top flange of the subject beam supports a de-stabilizing wall load along its full length. - see image.
How would I evaluate an...
A steel beam is being inserted in a 9" brick wall to form a new opening (approx. 4m long). There are no restraints at the ends (other than friction on the padstones, which can't be relied on). There is no floor structure bearing into the wall. Would the effective length have to be > L? If so...
Connecting a secondary beam to a main beam using a welded end plate + bolts; is it always necessary to design it just as a bearing connection, or are there instances where it would be OK to do it as a slip-resistant connection...
Hi,
Quick question; I have a brick pier, cross-section shown in sketch (SI units). I've calculated the radius of gyration about its centroid; now need to find the thickness of an equivalent rectangular pier with the same value of R, for checking the slenderness ratio.
Would appreciate any...
Hi guys,
Client needs a 6-bay extension to an existing shed, with the roof line continued, but with a narrower internal width; frames will be at approx 5.5m centres. This presents two problems;
1) one side of the frame will be higher than the other, and I can't find any design info. on this...
I have to beef up the support to a domestic timber floor due to increased loading.
My idea is to resin-bolt a 3"x3" steel angle to the brickwork immediately below the floor, using 3/8" bolts or threaded bar. I believe the shear on the bolts will not be the governing factor, it will more likely...
If an I beam is loaded uniformly along its span, the middle of the span is the position of maximum b.m. but zero shear. It is normally assumed that all the compressive stress is carried by the top flange, and all the tensile stress by the bottom flange. Assuming the load pattern never changed...
Steel beam question
When a steel beam deflects under load, the bottom flange is in tension abd the top flange in compression. How would I calculate the (admitedly small) increase in length of the bottom flange, and coresponding decrease in length of the top flange?
