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  1. RockEngineer

    ASCE 7-16 Balcony & Deck Loads

    I still need to know what ASCE 7-16 says for deck loading. I know the ICC committee for 2018 IBC has rejected the proposal to raise deck and balcony loading to 1.5 times the load of the area serviced. They are keeping the 2018 IBC and 2018 IRC requirement at the same as the area serviced. The...
  2. RockEngineer

    ASCE 7-16 Balcony & Deck Loads

    Can someone who has a review and comment copy of ASCE 7-16 tell me whether the requirement in Table 4-1 that decks and balconies be designed to 1.5 times the live load for the served area has been changed. The state of Washington issued an amendment to the 2015 IBC raising the live load for...
  3. RockEngineer

    Deck ledger to wall detail.

    Mike, You know architects don't always get what they want. I'm waiting to see your detail. I work with a lot of professional deck builders and I've never seen a detail through brick veneer without posts next to the wall that I like.
  4. RockEngineer

    what type of wood should i use for platform in swamp area

    Here is some basic info on AWPA use categories and types of preservatives currently approved for use in USA. http://preservedwood.org/TheStory/PreservativeUseCategories.aspx
  5. RockEngineer

    Cracks in Round Log Girder

    Correction. I hit a wrong key on my calculator. Your log girder is very overstressed if you have a 19 ft tributary width acting on the girder. I knew something didn't seem right.
  6. RockEngineer

    Cracks in Round Log Girder

    From the pictures it looks to me like a round log flatted top and bottom which is not unusual for log homes that I work with. Although unusual I have seen a log girder split/check vertically top to bottom along about half it's length in a log home after an earthquake. As Mike said, check for...
  7. RockEngineer

    Are you a Structural Engineer?

    "Structural Engineer in let's say Washington? Washington requires an SE for structures essentially classified as III and IV." Don't forget local restrictions also. I'm licensed as a Civil PE in Washington but do a lot of residential structures. I can't do any structural engineering in the...
  8. RockEngineer

    ASCE Membership

    I joined ASCE just to get their liability insurance for my side work.
  9. RockEngineer

    REG : WEAK AXIS SHEAR AREA OF I SECTION

    It goes back to (V*Q)/(I*t). On an I beam strong axis the large area creating low shear stress in the flanges so (V*Q)/(I*t) is very close to V/d*tweb. On the weak axis the web is at the neutral axis and is ignored. Q/(I*t) is equivalent to 1.5/(2*b*t) of the area so V/(2/3*Aflange*2)...
  10. RockEngineer

    Bridge in Washington State collapses

    KIRO news from Seattle just had a Washington DOT representative state an over height vehicle struck the bridge and caused it to collapse. Well see if that story hold up.
  11. RockEngineer

    2 Point Sling Lift

    It's normal to design a 4 point lift to only use 2 legs unless you have a specific method of equalizing the load. Sometimes I will model a third leg going to one corner and then show there is no load in that leg from the results. For rotation about Y I would restrain one corner in x and one in...
  12. RockEngineer

    IBC 06 vs IBC 09-Seismic & Wind load changes

    The big changes come with IBC 2012 when ASCE 7-10 is referenced. Very few changes between IBC 2006 & 2009
  13. RockEngineer

    Industrial Shelving / Rack Requirements

    ASCE 7-10 refers to storage racks being designed to ANSI/RMI HM 16.1 which is put out my the Material Handling Association. I haven't seen the document but it may be a good place to start [glasses]
  14. RockEngineer

    Insurance coverage for part time desiogn work?

    I have my current position because I gained a lot of knowledge from my outside work I would never have gained from my normal job. My bosses know my broad background and bring things to me that are out of the norm and other engineers don't have the broad background for. It depends on your job...
  15. RockEngineer

    Insurance coverage for part time desiogn work?

    I've been doing engineering as a side business since about 1990. I carry $250,000 per project professional liability through ASCE (American Society of Civil Engineers). I do residential and log home engineering and tell my clients up front it is my side business and what the time frame is. If...
  16. RockEngineer

    Insurance coverage for part time desiogn work?

    ASCE offers professional liability insurance program specifically designed for people who are already covered under their regular job and do work on the side. It is reasonably priced. I have used it for years. Even when you add in the ASCE annual membership dues it is far less than anything...
  17. RockEngineer

    CMAA #70 Transverse Web Stiffener Sizing

    Here is a tough question for our crane design experts. The first few paragraphs are only background. The only question I have is at the end and it is specific to sizing the web stiffeners. I'd prefer not to make this into a complete lesson on design per CMAA #70. I have a design for a 440...
  18. RockEngineer

    Post-installed anchor bolts

    ACI taught a seminar in Portland, OR about a week ago on designing anchors with most of the info on epoxy anchors. I didn't go but another engineer I work with did. From the data they gave and what they stated about the new Appendix D, the allowed values for epoxy anchors is going way down and...
  19. RockEngineer

    Rebar in CMU walls 1946 building?

    At the naval base in Western Washington State where I work they let a contract out about 20 years ago to tear down an old pre WWII masonry building. Everyone assumed it was unreinforced due to the time period and there was no mention of reinforcement in the building drawings. The contractor...
  20. RockEngineer

    Timber design

    I like StruCalc for sizing joists, girders, rafters, etc. It is fairly easy to use and inexpensive. For reports and hand calcs I use mathCAD. It makes it easy to see the equations and check your work.

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