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Recent content by Pawel1234

  1. Pawel1234

    Steel beam with a plate welded to underside - providing rotational end fixity for torsion

    Thank you for your replies. BAretired, by saying 'within the kern of the base plate' I understand that you mean that the reaction is within the base plate (i.e. at least some portion of the base plate is in compression). Following from that, if it can be shown that no uplift of the beam/plate...
  2. Pawel1234

    Steel beam with a plate welded to underside - providing rotational end fixity for torsion

    BAretired thank you for your post. Do you mean that the torsional moment reaction at each support is basically half of the total torque acting onto the beam? Am I correct that in my case this will be just the eccentric UDL acting onto the plate (i.e. UDL2 in the figure attached) times...
  3. Pawel1234

    Steel beam with a plate welded to underside - providing rotational end fixity for torsion

    Happy new year to you all! I have been thinking about the arrangement shown in the attached sketch which is essentially a steel beam with a steel plate welded to the underside of the beam. Both the beam and the cantileverng plate welded to underside of the beam are to support masonry. It seems...
  4. Pawel1234

    Timber double shear - internal ply

    Thank you for your replies. Would you also be confident that double shear is achieved if the inner ply was formed with say 3 or 4 No. timbers? Do you think there is a way to determine whether fixing of the plies, for example, using nails along the member length is adequate?
  5. Pawel1234

    Timber double shear - internal ply

    Hi All, A very quick question on double shear of timber members connected by bolts. I know that for timber members acting in double shear the inner member should be twice as thick as the outer members. Would you say that it matters whether the inner member is composed of 2 No. timber plies or...
  6. Pawel1234

    Cutting attic trusses

    @KootK, I would think the same. However, I think this could also apply to any other type of truss, for example, trusses made on site with members simply lapped and nailed together which most likely were not designed at all - as is the case for many roof structures built in the past. Would...
  7. Pawel1234

    Cutting attic trusses

    Thank you for your replies. You have raised some very interesting points. I hope you are all well. I am sorry I could not follow on your posts earlier. Please see below a sketch of how I see the behaviour of a cut truss if it is only supported at proposed opening by headers. I understand...
  8. Pawel1234

    Cutting attic trusses

    Hi All, I am new to the forum and this is my first post. I am looking forward to contributing and broadening my engineering experience. I would like to know your opinion on how to best approach truss modifications where existing attic trusses need to be cut to form openings, for example, for...

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