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加建234

(2015-05-19 18:54:20) 下一個

https://www.1point3acres.com/bbs/thread-867262-1-1.html 

1. Curtner 43931001

1.1考慮以最少成本加半個或一個浴室,管2-4年就行。
難點:整房slab估計厚4“,sun room又加一層估計總厚7-8”;外牆是厚6‘的大塊實磚;sewer cleanout從未打開過,低於地麵2“,管子鉗口淺沒夠著,不但鏽似乎還有泥灰在周圍。
方案:A在左上角加地基,似乎不值得;B利用sun room和左上角房的相鄰牆,在sun room裏加,但鑿開7-8”的水泥地也不容易。可否地上走管,把現有馬桶提高一階連接加出的管道?明管可用床架擋住。

1.2 正規加建:

前麵加bay window或地中海前廊貼石,側麵車庫前端封閉,這樣可停兩車。後院左側樹砍掉,太陽房牆/頂拆掉留地麵,保留廚房下水維修口。後院加建主人房帶浴室,獨立浴室,兩臥室,family room,hobby及洗衣房(下水接city)。按1346建也是夠寬的,但車庫要改內置。

1346 3746/8136, 1340-60x135 1418/8099, 2311 cottle 3239/7230 https://www.sccassessor.org/index.php/online-services/property-search/real-property

Image result for flat roof trusses

13 sewage pump/pit: http://www.homedepot.com/s/EVERBILT%2520%2520sewage%2520pump?NCNI-5
how to install: https://www.youtube.com/watch?v=iJSNYVJ0emA
"What about those sanaflo Macerating Pump that you don't need to break up the concrete. are they any good?   
+CaptHwdy08 I wouldn't go that route. My personal opinion is that those systems are visually unappealing. Do it right and bust the floor up. You won't regret it. Worst part is the labor. The actual install is a piece of cake."

2. FLo well kit https://www.youtube.com/watch?v=JMrPnyz6rdI#t=2m12s 

http://www.homedepot.com/p/24-in-Plastic-Storm-Water-Leaching-System-FWAS24/100377387  Dimension(s): 28-3/4" H. Diameter: 24". Use with 4" Sch. 40 Pipe and 4" DWV Pipe.

city在線申請:首先注冊要輸入地址(街名一行,另一行選後綴如Ave)和parcel#(可由網上找);登錄後選申請permit進入step1後顯示地址,要點擊地址才進入下一步;然後項目類型隻有roof和sub trade,選單項後才顯示各項目列表及數量,我是升級配電盤換熱水器,故輸入了兩個1;然後是簽字及付款。完後有inspection鏈接但目前失效。

PG&E承諾3天回複: https://www3.pge.com/ccoweb/#/login https://www.pge.com/ccoweb/customer.portal?_nfpb=true&_nfls=false&_st=&_pageLabel=MyApplications 注冊登錄後按部就班,要city permit號並上傳site plan:https://www.pge.com/includes/docs/pdfs/mybusiness/customerservice/startstop/newconstruction/processguide/processguide.pdf,表心高5-5.5英尺.

2. Laurel

37073 2173/9888, 37047 1080/8099 61x162, 37057 chestnut 2452/6064 https://www.acgov.org/assessor/resources/assessment-information.htm 

Front North/right fence: 7'8"(inc 4x4 on right,all like that)Wx(1'lattice+4'10.25" 1x8)H - 8'2"(1'lattice+4'10.25" 1x8) - 8'4"Wx(12.375"'lattice+2'8.75" 1x8) -  8'2.75"Wx(12.375"'lattice+2'8.75" 1x8) - 8'2"Wx23.75"H. 分三種高度ABC,A有3板壞,B有2板及上端2x4壞,C缺網板。

Front South/left fence: 7'11.125"(inc 4x4 on left,all like that)Wx2'H - 8'2"Wx2'H(4x4 post壞) - 8'3.375"Wx2'H,2'網板全缺。

washer agitate repair:https://www.youtube.com/watch?v=Rd-bTgOzhpk#t=2m  

single hole bath faucets: https://www.amazon.com/KINGO-HOME-Commercial-Stainless-Lavatory/dp/B07H32LNPV/ref=sr_1_5?s=kitchen-bath&qid=1549082820  

https://www.etsy.com/listing/500907235/358-m2-3853-sq-feet4-bed-study-office-2  https://www.etsy.com/listing/707568295/4-bed-study-office-best-selling-house

3. Area plan W48+12=60

1stFL: 56*48, minus Garage 24*24+14*24, hall 8*10, aircon/chiller 40"*8', so total 2688-1028=1660, 38*1660=63KBtu, 3ton; 2ndFL: 46*48=2208, 38*2208=84KBtu, 4ton; total 3868sqft

4. Roof

重要的是氣流可以直上由最高處的ridge vent出來,防止冷熱交界麵可能結露也要留有氣道。

有attic的屋頂,roof rafter上釘3/4 OSB並加vapor barrier和5mm覆鋁隔熱層,再由下往上釘1x4OC16,再水平1x4OC5.5,5.5吋適合上釘shingle;也可斜釘第一層1x4並水平留氣隙,其上直接裝metal roof。Roof材料在gutter處伸出1.5",在ridge處短1.5-2”作為氣隙。安裝:https://www.youtube.com/watch?v=NYrGNsoljHI? 

沒有attic的roof分hot(下圖左)和cold(下圖右)兩類,後者的ceiling joist之間下有隔熱層上空為氣道,前者由ceiling joist開始是3/4 OSB-整片2吋隔熱板-1/2OSB-Reinforced EPDM membrane,用長螺絲穿過隔熱板擰到ceiling joist上。cold roof可以用2x6OC16做ceiling joist,下麵是石膏板,板上是噴膠隔熱層但留3/4~1吋為氣流通道,2x6上釘5mm覆鋁隔熱層後加3/4屋頂板。材料以Modified Bitumen Two-ply Torch Down為好,壽命40年以上:https://flatroofdoc.com/rubber-membrane-repair/ https://www.improvenet.com/r/costs-and-prices/torch-down-roofing

Related imageRelated image

我的設想,上麵cold roof的ceiling joist用1呎高的flat roof truss代替,端頭truss結構,也是做成四圍通風的roof。平頂的好處是可裝PV容量最大,裝其它空調設備也方便。

flat roof trusses有TotalJoist,East-joistEast-joists等 http://nyreeleather.com/truss-design-calculator/

Hot roof一例:2x8Timber上19mmOSB,vapor barrier,100mm regid insulation,12mmPly用長釘釘在Timber上,這裏在insualtion後沒有氣隙也許會有結露https://www.youtube.com/watch?v=hac7_Lbeg0c Shingle cold roof: https://www.youtube.com/watch?v=nLTola8SxiA Metal cold roof:https://www.youtube.com/watch?v=DpxLi_Rm30s

 

5.Floor

 

常見的Crawl space和Slab各有千秋,前者裝修較易但要挖土方,可能有蟲鼠害;後者隻能用隔熱板,地埋管道要修的話得鑿開水泥層,改進可以是管道周圍留空以減小地殼變動的影響。地暖的話磚比木導熱快效率高,踢腳暖便於裝修但可能燙傷幼童。地麵溫度可設為80F,水溫100-120F。

一樓:地水暖+Slab以避免地板懸空可能的聲音和下沉,廳裏用石板便於地暖。二樓:也可用地水暖,pex釘在隔熱後的sub floor上再加鋁箔;或用forced air冷暖係統同時在一樓天花板加AC的出口。

6.Garage size

F150 2019 limited可達209.3-227.9x79.9(帶鏡), odyssey 203x79(不帶鏡,覆蓋sienna,Lexus LX SUV), Dodge Ran 8'7"(帶鏡)x19'10". 考慮維修最好用9'x7'門。標準雙庫23'4"見方。洗衣烘幹機需留30Wx36D(帶後部風管)。

7. Insualation

Cellulose blow-in價廉物美HD約0.21sqft-R19,每吋R3.5;覆鋁板Polyisocyanurate board是7(無鋁層為5.8),噴塗polyurethane foam是5.9

8. Energy

上麵涉及了若幹節省能源的方案,如用同時產生冷熱水的機器、不同的暖空設備如由8KW PV供電的空調、屋頂和地麵的保溫、平頂最大化PV、煤氣無桶熱水器與太陽能熱水器(http://www.dudadiesel.com/solar.php)綁定,還可考慮Tesla Power Wall,這是13.5KWh可輸出5KW的係統,電池目前是$6700外加安裝。

https://www.greenbuildingadvisor.com/article/qa-spotlight-will-one-radiant-floor-heat-two-stories 讀者反饋中有若幹實例。

https://en.wikipedia.org/wiki/Passive_house 被動式房屋特點是氣密建築物外殼(50Pa下每小時換氣<0.6次;通風廢氣回收熱量超過80%),超絕緣(外牆U值<0.15,窗戶<0.8),先進的三層窗戶(注意是97%和90%的差別),被動式太陽能設計(例如窗戶上部擋板在在夏季遮陽,冬季通過太陽光采熱),采用熱交換器通風係統,高效照明和電器。很少需要集中供暖,但有時會安裝HVAC係統。PHIUS + 2015標準基於五個原則:氣密性,通風,防水,加熱和冷卻,以及電力負荷。項目必須通過構建指定的鼓風機,通風氣流,整體氣流和電氣負載測試,也必須通過質量保證和質量控製測試。還必須采取其他措施,如低排放材料,可再生能源係統,濕度控製,室外通風,以及節能通風和空間調節設備。平均被動房屋比傳統建築更昂貴,美國為5%至10%,每日度能量(per heating degree day)約1Btu/sqft。https://laney.edu/carpentry/passive-house-ashton/ SF的$4M: https://blog.sfgate.com/ontheblock/2016/05/11/sfs-newest-passive-house-hits-the-noe-market-with-net-zero-impact/ https://www.redfin.com/CA/San-Francisco/2123-Castro-St-94131/home/1274373

 

Related image 

9. Home Theater

Golden Trapagon據說是最好的形狀即尺度按1.618的方根1.272變化,例如,熒幕牆是10x16',座位後牆是13x21',距離26',我覺得這用於音樂並無道理,用純律還差不多。

純律即取1、(或)、(或)、(或)、(或(或

)、(或)、(或)、(或)、2為數列。印度音樂的22個“什魯蒂”其實也就等於取數列1、、2。https://www.zhihu.com/question/20612595

10. furnace、aircon

GMSS960603BN 60K96% $843 https://www.alpinehomeair.com/viewproduct.cfm?productID=453075203  

DUCT SIZE: HTTPS://WWW.CDICURBS.COM/DUCTCAL  1103+1340: ret 14x13/14x15, supp 11"=14x7/12"=14x8, 180sqft>6"

furnace size: 35-40BTU/sqft

美的U型空調僅42db,帶安裝架等附件,適合上開式Single Hung窗戶並允許窗戶全開:https://www.amazon.com/Midea-Inverter-Conditioner-Flexibility-Installation/dp/B0867GMW9X 12KBTU 開口22-36x13.75",$469。https://www.youtube.com/watch?v=BBKEV7ox4L0 

目前該型號沒有製熱功能。窗式的效率低於中央空調更低於1拖幾。因此,管道式熱泵是最優解,Seer 18-20是老式窗式的一倍。

11. Slab vs Crawl space

slab vs crawl space: https://www.youtube.com/watch?v=k5GV5USvT3U 前者耐久沒有白蟻等問題,但是水泥層下的水管若壞了需要鑿開才能修理。

https://www.youtube.com/watch?v=stOvOxIDRYo https://www.youtube.com/watch?v=hPEtGx2dn_8 

地基牆截麵呈倒T型,牆厚6腳寬12厚6;slab外圈高至少18地下至少12,slab最薄3.5其下填4"直徑2"內的碎石.

我計劃做sunken slab,即隻有水管下的部分做crawl space,溝由subfloor覆蓋後與slab齊平。floor joist圍板是2x6其下sill類似,故溝壁上部有7.75"台階。地基外緣低於地麵的四圍加R4.5隔熱板,地基下鋪15mil塑料布。要注意的是靠外牆的水管不能直接在slab下做,可將外牆按常規地基牆做或管道裸露牆外。

 

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