EBB

DO NOT REPLY TO THIS EMAIL. To contact us, please use the email address or phone number listed below.     Hello,   Congratulations! You have been accepted to be a Participating Homeowner in the FEMA-funded Earthquake Brace + Bolt (EBB) program.   This email lists the steps you need to take and the deadlines you must meet to stay in the program and receive a grant of up to $3,000 for a code-compliant seismic retrofit of your house.   You will receive a Homeowner Packet in the mail within the next couple of weeks that details the EBB process and Program Rules. If you want to get a head start reviewing the information in the homeowner packet, it is available on the EBB website, and you can also begin reviewing the Contractor Directory here.   It is very important that you review the documents carefully as they contain critical information including all eligibility and qualification requirements.   Remember that to qualify for reimbursement, the house must be owner-occupied. It may not be a rental property.   EBB timeline and next steps for Phase One (Pre-Retrofit)   ?You have a total of 90 days (or three months) from the date you were accepted to complete Phase One of your retrofit project. However, if you are unable to meet this deadline, please contact us two weeks before your deadline.   Phase One includes these steps:   Decide if you will hire a contractor to do your EBB retrofit or if you will do it yourself. If you are going to hire a contractor, you must hire someone who is listed on the Contractor Directory on the EBB website. These contractors are independent businesses who have taken training in order to be included on the directory.   Obtain a building permit. A contractor will usually handle the permit process and plans for you.  Obtain a building retrofit plan showing the scope of work (Plans are required when obtaining a permit). Get the required pre-retrofit photos from under the house and of the exterior. For those who self-verified for the EBB Supplemental Grant ONLY, you must submit a complete and accurate Income Verification Form (IVF) for every income earner in your household for review within 30 days from your acceptan?ce, or your application will be removed from the Supplemental Grant process. A link to the IVF is on your dashboard. Once you have the pre-retrofit photos and required documents, you or your contractor must upload them to your Homeowner Dashboard. To access your Homeowner Dashboard, you will need to log in at www.EarthquakeBraceBolt.com with the username and password you set up when you registered for EBB.   The deadline to complete Phase One (Pre-Retrofit) is: June 15, 2023.   Again, if you are unable to meet this deadline, please contact us two weeks before the deadline.   After you have completed Phase One and before retrofit work begins, EBB will forward your photos and documents to FEMA for review. Once EBB notifies you that we have received clearance to move ahead from FEMA (most likely 10 weeks after submission), you may begin your retrofit.   Please note: If you begin your retrofit work before receiving clearance from FEMA, you will be ineligible to receive an EBB grant.   You will have six (6) months from the day EBB lets you know that we received clearance from FEMA to complete your retrofit.

Should you decide you do not wish to participate in the program, please 'withdraw' using your Homeowner Dashboard online so another applicant can be accepted.   If you have any questions or concerns regarding the EBB requirements or process, please visit our website at www.EarthquakeBraceBolt.com, see our FAQs page or Contact Us.   Sincerely,   Your EBB Team 877-232-4300 [e-mail]

Standard plan set: https://abag.ca.gov/our-work/resilience https://www.youtube.com/watch?v=ho9eQKsFnvg 

https://www.youtube.com/watch?v=Kn9XJhDPSzw#t=10m30s 

具体实例：https://www.youtube.com/watch?v=pcorjQxfwoA　

https://www.youtube.com/watch?v=2pr9Ui-kgDA    

https://www.youtube.com/watch?v=dGK8gZxcrPE#t=44s 

 

1. 放在水泥地基上的木料称为泥基mud base。上图是泥基锚栓的分布要求，锚栓距房子端头是9-12"其余接头５-12"，锚栓间隔4(２－３层楼)-6'(单层)，钻孔后需吸出粉末再加膨胀螺栓或粘性即加环氧树脂和螺栓、3x3垫片和螺帽固定；无法钻孔则用Simpson URFP框架锚；为省钱可如上图所示加木料后用螺栓或Simpson URFP。混凝土中的孔将与膨胀锚栓的锚栓直径相同，粘性即加环氧树脂的锚栓孔稍大1/16~1/4"；孔的深度对于膨胀锚栓至少４"，对于粘性锚栓至少6"。

2.短立柱的这段高度称为残墙cripple wall，通常间隔16"，其空间即泥基上可加PT或基础级红木2x4 block横木限位，上述螺栓可加在横木上；如果开有地窗或大跨度，每段至少２个螺栓。残墙需要加15/32 exterior至少5层的胶合板，每个墙端支撑度１层楼为40%或以上，两层为 50%。使用至少四英尺宽的板，8d or 0.131x2.5"(钉枪可用2-1/8")钉子四边间隔4"中间12"。分配胶合板的方法1是将所需长度的三分之一放在每个墙端，其余三分之一放在墙的中部。例如，单层住宅一侧有16"高60'长的残墙，则至少需要16"x8'胶合板三张，分居两端和中部。方法2可用六张四英尺长的沿墙壁均匀分布，每端各有1张，此法可能避开残墙处的管道烟囱或通风孔。每张胶合板要钻两到三英尺的通风孔，居中在mud seal上1.5"处和顶板下2.5"处；如果胶合板高度低于18"则只钻1个孔，方便检查其中的bolt。如果有外部通风管，胶合板上开孔的周围需加垫木并加钉子。

3.残墙上方横置的2x4与竖立的端板Rim joist之间要加clip angle L90/L70, 10d or 0.148x2.5"钉。对于横木被白蚁蛀导致降低，用20吨千斤顶后塞入7/16"胶合板后再加2x4"支撑floor joist。

4..残墙上方横置的2x4若短于48"，需加#16(1.518mm)铁条跨越接缝，例如外部的crawl space入口上方。实际用了2x3x1/4"角铁，要是2x2x1/4"方管并列就更好了。

本地市府检查只有一次在完工后。同时可能检查大桶热水器的固定和烟雾报警器。

gas valve: https://www.youtube.com/watch?v=KtZUZIRDr1Y?  https://www.amazon.com/Andreas-Northridge-Earthquake-Manual-Sensitive/dp/B07Q773WLZ/ref=sr_1_1 

1855-376-3221 https://www.foundationrepairofca.com/earthquake-retrofitting-and-repair.html 

挑战：我的地基上缘宽9，再往上是1.5"高的调平水泥是混凝土地基的一部分宽6"，mudsill是1.75"x6"，上面还有2"x4"，然后10.25"高的Cripple stud宽度1.75-2，so total wood structure cripple wall height is: 1.75+2+10.25+2+2=18"。

地基竖孔：需低高度钻，一般冲击钻都放不下，因空间仅10.25"下为4"木料才是水泥。直角钻DCD740高4"、Dewalt DW120为5-1/2"、Milwaukee 3107-6为5.625"、1680-20(非常重，搞不好回扭断胳膊)是有倒角的，对2x4大概为4.75"。Dewalt 电池钻DCD805为卡头缩回6.5"，60ftlbs，20V2A，但是手册只建议最大1/4水泥钻头；若DCD740可用-很易烧毁-卡头缩进时估计为3.5"。钻头按价格选择是：Irwin/Diablo/Bosch/Milwaukee，按速度则相反；其它品牌包括Dewalt可能钻不了老地基。按Milwaukee 1680-20算，10.25-4.75=5.5"，钻先用木工钻钻掉4"，放8"钻头钻水泥4"深，再放10"(实际可放到12")钻头再钻1.25-1.5"水泥，这样水泥洞深5.25"加木料9.25-9.5"，12"锚栓留2.75-2.5"给垫片螺母。实际操作不易：工具太重，缺少拧紧钻夹的空间。

方案1：mudseill加垫1/2"再装QRFP，两端的半圆能砸平最好，斜孔往下。方案2见下图：QRFP躺在地基上面，1/2"x6"螺栓斜孔往下，5x1/4x3"螺丝固定在mudsill上层2"x4"上，可能要结构师签名。方案3：在现有mudsill上打10"深孔，空间有限孔有倾斜。

https://www.youtube.com/watch?v=Kn9XJhDPSzw#t=98m38s 好长的视频，QRFP在2020年低是$17.5。买了一片UFP10-SDS3，可以用在我的地基上但是数量有限而且贵 - 比HD的QRFP贵8刀。螺丝是5pcs SDS25312即1/4x3.5"，用3/16钻孔3/8套筒。我因mudsill是2x6加2x4，会把其中2个换为5"长的。最

最终方案：UFP10-SDS3或上述三次钻加树脂埋锚栓。我设法买了一些UFP10，虽然价格不菲。mud sill用Simpson 1/4x3.5或5"及3/8套筒，如果是6x80mm需10mm套筒；侧面是1/2"螺栓至少5"长。

Palm nailer单钉枪必须有，推荐Ridgid适合1.5-4"钉，客服1.866.539.1710或https://register.ridgidpower.com/contact，备件Gardner at 800.544.2444。另外Bostitch PN100 kit或Harbor，建议在本地店买以便更换和保修。漏气很常见，通常是垫圈不到位或没垫圈。买了二手R350PNF试用不错，稍碰到钉子就动作不费劲。

LA的plan https://www.ladbs.org/docs/default-source/publications/standard-plans/anchor-bolting-bracing-foundation-drawing.pdf?sfvrsn=f68feb53_15  似乎用到Mitek SRC：https://www.mitek-us.com/products/concrete-masonry/foundation-anchors/SRC 按LA plan，1/2的threaded rod钻头14mm或9/16"，钢筋用5/8"，力矩25-30ftlbf，与Simpson文档的5/8"钻头最大力矩20ftlb有差别：https://www.buildsite.com/pdf/simpsonanchors/ET-HP-Epoxy-Adhesive-Product-Data-1849356.pdf

9/16x10"的钻头很难找：https://www.fmwfasteners.com/products/9-16-x-10-1-4-itm-sds-plus-hammer-drill-bit?  https://www.bridgefasteners.com/products/9-16-x-10-1-4-carbide-hammer-sds-plus-drill-bit，它也卖1/2x12"锚栓，注意若是不锈钢要选304(18-8)的。

Epoxy 14fdays hard-hard/fresh-hard strength psi: Simpson ET-HP22-N 2400/2800, SET-XP22-N 3200/2000, SET-3G 3350/2750, AT-XP上万，差不多的是PC-concrete 20.2oz，9/16x5"可灌约64孔，与HD卖的Pro的差别是强度类似，固化时间短(44小时，Pro是7天；操作时间均为20分钟)。每孔挤两次就可以了。

钉子得规格也乱，例如IRC标准16d是3.5x0.135"，但Simpson commonssinker、short分别是3.5x0.162和3.25x0.148，所谓sinker是头部有网格便于手钉时锤子滑动，short不建议用于Framing。8d/10d/12d/16d是长度2.5/3/3/25/3.5"。8d common是2.5x0.131，但galvanized多为2.5x0.113。galvanized传统是指hot dip浸锌的，但不少厂家把不耐久的电镀也叫galvanized，不过包塑料的还没敢这么叫。传统hot dip的外观是不光滑发白，有的镀锌是光滑的颜色发暗镀层较薄，电镀发黄就更薄了。Simpson的UFP10是镀锌但是不厚还是会锈的。

咨询：https://www.softstoryretrofitpros.com/blog/post/what-is-a-bracebolt-retrofit-how-to-protect-your-home-from-earthquakes

Procedure: call inspector to confirm washer size and inspection steps

0.anti rust processing of UFP10
1a.drill 7/8x4" holes along eastern wall, 3+4 holes, and
  white chalk to mark/measure plywood height/position
1b. when concrete drill bits received, finish threaded rod holes of 5" deep, vac/brush/clean hole, insert threaded rod and leave at least 1/2" after nuts installed.
1c. do 1st epoxy rod, mark amount needed, then do rest - total 3+4 - each needs 0.3oz@14mm drill, OP time only 20min. . Might use remained epoxy for roofing. Clean the gun.
2.make template to drill 3/16" wood holes at the center height of mudsill, 4.5"/3"     deep w/ mark on drill bit, these are for UFP10, order is south/west/north,      and mark/measure plywood height/position
3.cut 2x4, install whenever I have time
4a. when UFP10 available, install No.2/4 1/4x3.5" screws to locate UFP10, then drill 1/2x6" concrete hole, vac/clean and measure depth,
4b install 2pcs 1/2x5" bolts for each UFP10 torque to 25-30ftlbs, then tighten 5pcs 1/4 scerws(outer 5", inter 3.5") 
5. nailing 2x4x14.5" blocks, w/ palm nailer
call inspector
6a. cut plywood & predrill vent holes, nail screens,
6b. after 1st inspection, install plywood w/ framing nailer
call final inspection

https://trakit.saratoga.ca.us/etrakit/dashboard.aspx? google saratoga city inspection，在网上创建账户，连接到permit#，再选时间，需提前几天。y~i/B(

===

wk1=0521
1.UFP10防锈处理 -0520
2.做2x2x14.25”L模板，上面钻离边缘1.5"的0.5"孔，侧面离上端1“钻5x 3/16孔 - 0521
3.测量并记录每个14.5”间隔宽度，标记rod、UFP10、胶合板位置（x，||和<>） - 0521
4.找出来3“钻芯
5.买angle steel install将装在入口上沿 - PO done 0523

wk2-4
1.抽空锯2x4、2x4PT隔断木并标号
2.完成北边剩余部分测量
3.现有bolt照相，用3/16钻头转mudsill孔，孔1、5深5”其余3.5“，用螺丝大致固定UFP10后，钻1/2x5"水泥孔，闭眼吹尘，毛刷再吹，要加epoxy用枪挤2下
4.钉2x4前bolt先拍照，安装用20d钉子和单钉枪
5.复核胶合板宽、高

wk5-7: 
1.按测量高度切割胶合板并划钉线，预钻3”通风孔并钉网防止老鼠
2.放松相关电线，用2-1/2 32度钉枪安装胶合板
3.拍摄完成西墙照片3张
4.电话申请final inspection
5.退还不用的材料， URFP, epoxy, 2x4PT, etc.

wk8-9：final inspection

wk12-13:
递交EBB完成材料，包括final inspection/发票收据/照片等，登陆后可知。由于我的发票有多张，把它集中成单个pdf，首页是索引链接。提交后就不能改了。

=== Angle Steel bar addition

The 3' basement outside entry has dropped down 1/2" each side, it is because the two layer 2x4 top plates have upper layer interconnected-thus edges and lower one cracked at one side, and termite at the other. I bought 2x3x36" 1/4" thick angle steel and used 20ton jack to insert supporter at each side - 4x10-1/4" with thickness 2" and 1" respectively. After repair L/R side still lower 1/4 and 3/8".

===https://www.earthquakebracebolt.com/Portal/login  gmail/S-1