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  1. 37ed

    SYP

    A Year ago as a favor to a Arch friend, I Designed a wood stud House for a friend of his. I speced southern yellow pine for load consistance. He called me and said that the owner was very upset with me because the studs "where going crazy". His walls are bowing,outside sheathing popping out,and...
  2. 37ed

    Concrete Formwork

    Yes to your question,5% does not sound like to much to me. The form that is at the 45 degree angle WILL TRY TO FLOAT UP,such as a battered wall. Depending on the form system and a few more elements,like base of wall size,etc In a battered wall the loads "push out"on the forms. At the base you...
  3. 37ed

    Concrete Formwork

    O.K. speak softer.I know a little about forms, so what is your question in better terms. ie really break it in to the nuts and bolts.
  4. 37ed

    Residential Swing Hardwares

    Build it for a child,No a group of kids. A kid can bust a rock.If you design with this in mind a 400LB FAT MAN will be no problem.
  5. 37ed

    What is Structural Enigneering

    But the civil engineers target is always moving.
  6. 37ed

    CRACKS IN MASONRY WALL

    Sorry if I am being confussing,but I am trying to give you all the possible situations based on what I am hearing from you. I have found that in EVER stuctural problem it is always a chain of events that leads to a given situation. I do have some load charts and will forward. Reguards Ed
  7. 37ed

    CRACKS IN MASONRY WALL

    Mind you I can't see you building from here,but sounds like a loading issue from above.Your limestone seems to be playing a factor. Also could be some steel issues.Check for weep holes in the walls.If you don't feel like you see enough than knock a hole in the wall at ground level. This will...
  8. 37ed

    FIBER OR WIRE

    I have a contracter that wants to add his own fiber to concrete mixers on site.This will save him money.I don't have a problem with him saveing some money. He called me and ask if I would mind.He has indicated that he is going to use the same 1 lb bags as are used at the concrete plant,dump in...
  9. 37ed

    CRACKS IN MASONRY WALL

    I think I have seen this before,But first let me ask, When you say THROUGH the brick you mean, 1.The cracks are in the morter joint? 2.The cracks are splitting bricks? 3.The cracks are running the joints and splitting some bricks here and there along the way? Next,how are the bricks applied...
  10. 37ed

    RC Walls

    If your wall is back filled and a floor load is there from above, no way He would taik me into that one. Ask him this: 1. what is going to keep your wall from walking off when you back fill? 2. how are you going to apply your rebar from the slab/footing into the wall without putting holes in...
  11. 37ed

    What is Structural Enigneering

    My understanding of engineering is "They can Draw an elephant hanging over a cliff with his tail wrapped around a buttercup.And we have to make it work" SOUND RIGHT TO ANYONE ELSE?
  12. 37ed

    Roof Sheathing

    Blocking is going to transfer loads on the trusses that are not meant to be. The bottom cord on the church trusses I was talking of before tried to snake out under the new loads.the span was only 30ft.and yes there was bracing. More is not always better.More OSB,and blocking may be the...
  13. 37ed

    Slab-on-grade w/ embedded rails

    I agree with sliderule. I would like to say again however,your bottom slab needs to be 12 inches.than cover with 6 more inches. If you use an over all slab of 12 inches once you put your rail in you will only have 6 inches under the rail.Not enough to last very long. Good luck Ed
  14. 37ed

    JetBlue Landing at Los Angeles

    Once again,we need to go back to the Pilot. If you recall,before he attempted landing he had his crew move baggage & people to the rear of the aircraft.From an engineering point of veiw that was smart as heck.shifting the load off the nose,and off the front gear.I do not know if they teach that...
  15. 37ed

    Roof Sheathing

    Adding layers will only add insult to injury. As stated above, now we have changed the designed of the dead load. Also this question my seem off hand,but what is the exposure of the OSB? anyway. Adding layers also does not give the truss engineers a chance to change there design if nessary...
  16. 37ed

    JetBlue Landing at Los Angeles

    How about that pilot,If you look at the video you will see even with the gear sideways he had it right dead on the center line.Now that is skill and years of practice at its finest.
  17. 37ed

    Selecting the right expansion board for an expansion joint

    Have you looked at WEBAC 157 or any of there products
  18. 37ed

    Selecting the right expansion board for an expansion joint

    I think by what you have said, you have the right idea. Is the cap PRECAST,CAST IN PLACE,or what? Also I am looking at some data on foam expansion,will get back to you on pressure,and life span.
  19. 37ed

    Selecting the right expansion board for an expansion joint

    A better idea here,maybe. what about a drainage design to remove the water from behind the wall?
  20. 37ed

    Selecting the right expansion board for an expansion joint

    Good one, The only thing I can think of is PVC water stop,but that is not going to help much with expansion. I have used selfleveling sealants in slab joints where I have expansion board,and it has worked well.The only trouble found is to make sure contractor does the job carefully.

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