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车库1楼框架不与2楼桁架对齐

Eric Cyr|发布General Questions

We had a “pretty good” house built with an attached garage in Climate Zone 6A. The garage is 28’Wx36’D and shares a 22′ section of wall along the 36′ side.

该车库是在一楼使用2×6建筑设计/建造的,并为2楼/屋顶设计/建造桁架。一楼的框架为24英寸OC,尽管桁架不与一楼的框架保持一致。它们彼此约为8英寸。当地法典执法人员对我们的设计师询问了这一点,他被告知他们进行了所有计算,这不是问题。

代码执法人员使他们在一楼的框架上安装了更多2×6,以与上面的桁架保持一致。他们只在自由站立的36'墙壁上做到这一点,仅在10'长的顶部和底部钉上钉子。由于壁板已经打开,它们没有附着在护套上,我可以轻松地将它们侧面移动到一边。

Is this an issue and are these additional framing members actually doing anything?

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Replies

  1. Keith Gustafson||#1

    如果您有双层板,则首席执行官错了

    Put it this way, classic stud walls are 16 on center and trusses are frequently 24 on center

    But CEO are never wrong so you probably should just forget about it

    Absent a pic I don't understand the moving around thing

  2. Eric Cyr||#2

    基思,我感谢答复。

    Yes, there is a double top plate.

    “没有图片,我不明白四处走动”
    Sorry, I wasn't clear. If I grab the 2x6 4-5' above the bottom, I can move it side to side fractions of an inch, which is how I know it isn't attached to the sheathing.

  3. GBA Editor
    Brian Pontolilo||#3

    嗨,埃里克,

    在没有看到框架计划或一些照片的情况下,充满信心地回答这并不是一个容易的问题。正如Keith所说,将桁架与螺柱对齐是一种高级或价值工程的框架技术,它旨在更有效地使用较少的木材。

    One of the things advanced framing with aligned trusses and studs allows you to do is have a single top plate. If you have double top plates, this alignment usually isn't necessary.

    Perhaps the building official saw something else going on and asked for the additional framing for point loads, I don't know.

    可以四处移动的其他螺柱这一事实告诉我,建造者并没有认真对待建筑物的官员,只是将它们添加到了检查。无论是否实际需要,我都不能说没有更多信息。

  4. Jamie B||#4

    To your question, are the extra studs doing anything. Based on your written description, My personal opinion is not much.

    If you want to integrate them better into the wall, consider adding blocking in between the studs.

    I'm not a structural engineer though. I'm just some guy on the internet. If you want to know for sure if it's required, you can look it up in your building code.

    1. Expert Member
      马尔科姆·泰勒(Malcolm Taylor)||#5

      I agree. They are not necessary, but if they are staying the best way to make them add some structural value is to block them at mid-height.

  5. Expert Member
    Zephyr7||#6

    如果您有一套工程图纸,请使用不结盟的桁架进行设计密封(邮票)设计密封的工程师,并向代码人员展示。工程师可以推翻代码执行人员。

    That said, I can tell you that it isn’t always that easy. Sometimes the local code/building guys start doing the “not in MY city” thing, then you have to appeal to the state-level people. If showing the local guys sealed drawings doesn’t get their ok, you’ll need to decide if it’s worth the hassle, and potential project delays, that you’ll have to deal with to overrule the local building department people.

    Bill

  6. Expert Member
    Michael Maines||#7

    As others have said, as long as you have a double top plate the IRC does not require trusses and studs to be aligned. However, with large roof spans and heavy gravity loads it's not always a good idea to go with code-minimum. I had one project with a 44' truss span where an engineer said we had to add extra framing because the load on a double plate was too large for conventional practice.

    The code reference for top plates is R603.3.2:https://codes.iccsafe.org/content/irc2015?site_type=public/chapter-6-wall-construction#irc2015_pt03_pt03_ch06_secr602

  7. Eric Cyr||#8

    Brian

    I've attached more drawings from our home plans and a few pictures to show the added vertical studs on the first floor and the double top plate.

    谢谢大家的回复。

    我倾向于将它们拆除,以便为岩盘绝缘提供更多空间。

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    1. GBA Editor
      Brian Pontolilo||#9

      嗨,埃里克。

      Was there an architect or engineer involved? If so, I'd double check with them before removing the extra studs, however, I still can't see why they are necessary. And as others have pointed out, if you keep them, toenail them to the bottom plate and add some blocking.

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