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Concrete Free Foundation Using Wood at or Below Grade

eric_davis.|发布了建设代码问题

我在GBA和其他地方阅读了关于具体的基础的各种文章。例如,Michael Main的以下伟大的文章在这里:

//m.etiketa4.com/article/minimizing-concrete-in-a-slab-on-grade-home

凸显级别的混凝土平板,但维护CIP阀座基础,以支持主要结构。

I have conceptualized a completely concrete free foundation using Mass Plywood and a structural beam all supported by helical piles. This would be no problem if it was above grade 18″ or more to allow for a crawl space; however, I want to eliminate the crawl space and even more so reduce the imposed lateral loads on the piles that results from having them 18″ above grade.

In knowing that code requires a minimum of 8″ clearance from soil and non-treated wood, how do code officials view the 6″ clearance in Michael’s article for the SOG example? And further, how would my detail below be perceived? Technically, my proposed approach, consisting of both treated and non-treated wood, doesn’t fall into the Permanent Wood Foundation code section. Are there any precedents that I can point to for this or a similar approach.

衷心感谢埃里克

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答复

  1. HC_Karlberg||#1

    Considering your project requirements, I personally would be more comfortable placing cellular glass insulation material below grade, rather than wood fiberboard or Rockwool. It also drains well after compacting, so you may not need as much gravel as shown in your detail. I only know of European brands (such as Misapor, Glavel). It looks like this ->https://www.youtube.com/watch?v=RQBe-7EymAI
    你可以尝试泡沫格,但我的猜测将更贵。它通常用于解决门窗的热桥细节,即使它们有时将其宣传为墙壁和平板覆盖(由于成本)。

    Pavatex and Blue Ridge are other brands of wood fibre board, besides Gutex. The US market is only just waking up to its potential, with pilot projects here and there.

    Depending on where you are in the project, you could look at the potential of hemp blocks or hempcrete, as an alternative for your insulation material in the exterior wall. -->https://www.hempitecture.com/hempcrete

    I wanted to share my thoughts, as I am going through the same conundrums.
    I settled on EPS for below grade insulation, due to local trade standards and its durability testing history.

    1. eric_davis.||#4

      Thank you for turning me onto Hempitecture. I will definitely look into this further.

  2. Expert Member
    Michael Maines||#2

    Eric, you have an interesting idea. If you haven't seen it already, Josh Salinger posted a somewhat similar idea in the comment section to my article, and we had him and a few others on an early episode of the BS + Beer Show to discuss it further:https://youtu.be/igxoan4znti.

    Code compliance could be complicated, since these are new ideas. On my project I spec'd 6" to 12" from grade to wood; 6" is the IRC requirement (https://codes.iccsafe.org/content/irc2015?site?type=public/chapter-3-building-planning#irc2015_pt03_ch03_secr317.1.). When I have designed homes and additions on piers I follow the code requirement of 18" for access, though pressure-treated beams are allowed to extend into the 18" space.

    为了通过代码批准,我会致电你的设计一个在等级的混凝土板。木纤维绝缘解决了很多问题,但不应与土壤接触;我将保持至少6英寸的清关,因为您将到其他未处理的木制品。在地板系统下,它可以工作,因为它可以保护免受水分的影响,但矿棉将更安全。

    1. eric_davis.||#3

      感谢BS + Beer Link,我还没有遇到该讨论,但在您的文章评论中看到了Josh的细节。刚看完整个节目,知道我需要努力沉没乔希塞林宾。我认为我们两个人在一起可以说服Steve Baczek作为Josh,我正在概念化几乎相同的事情!我会尝试在鸟姆斯茅茅斯建设中致电他,也许你不介意连接我们。我也是北部的戈利亚螺旋螺旋桩的认证安装人员,当然可以在那个前面为Josh增加一些价值。

      至于板块下的Gutex:它们使称为Thermuroafe WD的产品,传统上被示出在混凝土袜以上;我的思想是首先使用砾石/豌豆砾石子基地上方的摇滚雨舒适板,然后在舒适板上的最小6mil蒸汽屏障,然后将Gutex Thermuroafe WD放在上面。如有更安全的解决方案,只需使用低于平板的所有舒适板和近年级。很多人在这里打开包装。再次感谢。

      Oh, and has Mike Guertin published his article/ideas about Pressure Treated Stem Wall Foundation mentioned in the BS+Beer episode?

      1. Expert Member
        Michael Maines||#5

        Eric, you can reach Josh through his website:https://birdsmouthpdx.com/who-we-are/contact-us.html.

        I've been interested in the Gutex slab product, but I would only use it where it was sure to remain dry. I have not tried to order Gutex but I know it would be easier to get their standard products than their specialty products. Probably worth talking with a 475 rep.

        我不相信Mike Guertin发表了他的想法,但他在Instagram页面上发布了一个旧的木头基础:https://www.instagram.com/p/b4fws0yghbe//。如果该链接不起作用,请从2019年10月查找他的帖子:https://www.instagram.com/mike_guertin/

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