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  1. Bowsers

    Metal Gangways - Marina egress

    Thanks for the reply, pham. This design is for 'big ships' in a dockyard. I know they recently had a cruise ship in. The cruise ship company required certification of 100 psf LL capacity, which is why we were brought on board. It was a rush job for 3 gangways, and I used seismic lateral...
  2. Bowsers

    Metal Gangways - Marina egress

    Hello Engineers I am tasked with certifying a large batch (>100) gangways for a shipyard. I feel I've gotten as far as I can on my own, and by searching old threads, so here I am making a new thread. These gangways were all made in house at the shipyard, with no previous engineering design...
  3. Bowsers

    Wind Loads on Louver Assembly - Side of Building

    I would consider this to be part of ASCE 7-16, Chap 30 C&C, with your internal pressure set to 0 (per 29.3.2).
  4. Bowsers

    Goomba Tower Collapse at Super Nintendo World

    It appears this Goomba tower's anchorage wasn't sufficiently attached to deal with the proper C&C windloading. The embed video makes it look like the tower is integral, with the failure taking place at the base. -Nintendolife.com story link-
  5. Bowsers

    Special RC Cantilevered Moment Frame - Rho/Omega + detailing questions

    Hello and Greetings I have been tasked with designing a special reinforced concrete cantilevered moment frame. This is a 14' concrete column over an isolated footing. I have three issues of design that I am unsure on, and wish to be properly addressed. 1) I have a redundant rho factor...
  6. Bowsers

    When is a detail required?

    Wow, thanks everyone for the input. I thought it might there might be a prescriptive answer, such as "an engineering detail is required when a connection transmits over 50#/200#/500# of load" otherwise up to the engineers judgement. What I'm gathering is that it is always up to the engineers...
  7. Bowsers

    When is a detail required?

    Hello, Sorry for such an entry level questions. I did a forum such but nothing came up of use. I am curious when a detail is required. What, in general, should be signaling to me that a detail is required? Secondarily, if a detail is required, when is it ok to specify a prescriptive...
  8. Bowsers

    Cantilevered Glass Design, Balusters, loading

    Thank you all for contributing to this. More specific information on the project itself: Cat II design, Exposure B, V = 110 MPH, parapet wind loadings @~sea level. C&C wind load = 49.4 psf (ult). Glass is 5/8" laminate, located on building edge w/ 30' drop. Dims are 38" wide x 58.5" tall...
  9. Bowsers

    Cantilevered Glass Design, Balusters, loading

    Hello fellow applied physics nerds. I've been scratching my head over a design concept that I was tasked with demonstrating is 'safe' (to the standards of the ibc and asce 7). The design is with a glass on the edge of the building. This is a location that needs fall protection per IBC. I...
  10. Bowsers

    Hilti Profis Alternate

    @stevenh49 - I'm using the strain compatibility based on the the rows of lag bolts. @dold - I'm not particularly concerned about crushing the wood, though it would be nice to show that it's fine. The concern is the resulting tension of the lag bolts. I originally sized them based shear...
  11. Bowsers

    Hilti Profis Alternate

    @Dold - Thanks. Yes, the stress block is what I was referring to. Perhaps not knowing that to call it properly was part of my difficulty in finding the answer I seek. If you were to run the run the numbers in hilti and in boltgrp sheet the output for tension would not be the same, as a...
  12. Bowsers

    Hilti Profis Alternate

  13. Bowsers

    Hilti Profis Alternate

    @Dold Thank you! I must've been looking at another bolt group spreadsheet?! Would you mind sharing a copy of that sheet with me? I'm not part of the excelcalcs family. @Retrograde -- When you look at a hilti output, a compression zone and tension zone is indicated, with a line dividing the...
  14. Bowsers

    Hilti Profis Alternate

    @Dold - The boltgrp excel spreadsheet is what I used for my initial analysis. That analysis takes into account loads that are eccentric to the bolt group. The result is answers that are only in shear. My loads are both eccentric and out of plane, so their is resulting tension in addition to...
  15. Bowsers

    Hilti Profis Alternate

    Hi All, thanks for the reply so far. @Retrograde - A lower E value significantly changes the point of bending. @XR250 - I have validated the shear and tension outputs from hilti for simple load cases. Using their design guide I was able to validate for shear loads in plane with the faying...
  16. Bowsers

    Hilti Profis Alternate

    Hello, I'm doing analysis on an eccentrically loaded bolt group, that is experiencing loads that are both eccentric and out of plane of the faying surface. Hilti Profis does this analysis, you can apply Mx, My, and Mz, as well as Fx, Fy, Fz from any point. I've gone through their design...
  17. Bowsers

    RISA-3D and Python programming. API?

    I have moved firms and my current firm uses Risa, while my previous firm used SAP2000 for the finite element analysis. I have a bunch of Risa models that I need to output. I was 'familiar' with the SAP2000 Oapi system, and could write a simple script. In this case I need to print out the...
  18. Bowsers

    Detail construction, detail library management

    Hello! I am thinking of getting either a Wacom tablet or a Microsoft surface. (My firms computers are all Windows, so an Apple device doesn't seem like a good fit) I'd like to get better at drawing, detailing, and develop my own library of details. My firm has a 'standard detail library' with...
  19. Bowsers

    Bolt group analysis in wood

    Thank you, I have moved away from all the eccentric load conditions that I can. The result is concentrically loaded, facemount plates. I'd also like to shoutout "APA Product report PR-L280C" as having good information on allowable loading.
  20. Bowsers

    Thrust Analysis

    Oh! I see. Think I would have figured it out when I opened back up the Risa Model.

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