Point-taw iav systems uas ua tau raws li qhov yuav tsum tau ua vaj tsev yog qhov tshwj xeeb tshaj yog nrov hauv av nkag los yog cov chaw pej xeem.Kev txhim kho thev naus laus zis tsis ntev los no tau tso cai siv cov nplaum nplaum uas muaj zog heev los txuas cov pumices loj rau cov khoom siv yam tsis tas yuav tsum tau laum qhov hauv lub khob.
Qhov chaw hauv av ib txwm ua rau muaj qhov tshwm sim uas lub kaw lus yuav tsum ua raws li cov txheej txheem tiv thaiv rau cov neeg nyob hauv tsev, thiab qhov yuav tsum tau muaj ntau tshaj lossis tshaj qhov yuav tsum tau muaj cua txias.Qee qhov kev ntsuam xyuas tau ua tiav ntawm qhov taw tes kho qhov system rau drilling, tab sis tsis yog ntawm txoj kev sib txuas.
Lub hom phiaj ntawm tsab xov xwm no yog los sau cov kev sim simulation uas siv lub raj poob siab nrog cov nqi tawg los simulate qhov tawg los simulate qhov cuam tshuam ntawm qhov tawg ntawm qhov sib txuas pob tshab.Cov kev hloov pauv no suav nrog cov khoom tawg tau txiav txim siab los ntawm ASTM F2912 [1], uas yog nqa tawm ntawm lub phaj nyias nrog SGP ionomer sandwich.Qhov kev tshawb fawb no yog thawj zaug uas nws tuaj yeem ntsuas qhov muaj peev xwm tawg tau rau kev sim loj thiab kev tsim vaj tsev.Txuas plaub TSSA fittings nrog ib txoj kab uas hla ntawm 60 hli (2.36 nti) rau lub khob phaj ntsuas 1524 x 1524 hli (60 nti x 60 nti).
Plaub yam khoom thauj mus rau 48.3 kPa (7 psi) lossis qis dua tsis ua kom puas lossis cuam tshuam rau TSSA thiab iav.Tsib ntu tau ntim rau hauv siab siab tshaj 62 kPa (9 psi), thiab plaub ntawm tsib lub ntsiab lus tau pom tias iav tawg, ua rau lub iav hloov ntawm qhov qhib.Nyob rau hauv txhua rooj plaub, TSSA tseem txuas nrog cov hlau fittings, thiab tsis muaj malfunction, adhesion los yog bonding.Kev ntsuam xyuas tau pom tias, raws li qhov yuav tsum tau ua ntawm AAMA 510-14, TSSA kev tsim qauv tuaj yeem muab kev nyab xeeb zoo nyob rau hauv qhov hnyav ntawm 48.3 kPa (7 psi) lossis qis dua.Cov ntaub ntawv tsim tawm ntawm no tuaj yeem siv los tsim cov txheej txheem TSSA kom ua tau raws li qhov teev tseg.
Jon Kimberlain (Jon Kimberlain) yog tus kws tshaj lij daim ntawv thov ntawm Dow Corning's high-performance silicones.Lawrence D. Carbary (Lawrence D. Carbary) yog Dow Corning tus kws tshawb fawb kev lag luam ua haujlwm siab uas yog Dow Corning silicone thiab ASTM tus kws tshawb fawb.
Cov txheej txheem silicone txuas ntawm iav panels tau siv ze li ntawm 50 xyoo los txhim kho kev zoo nkauj thiab kev ua tau zoo ntawm cov tsev niaj hnub [2] [3] [4] [5].Txoj kev kho tuaj yeem ua rau cov phab ntsa du txuas ntxiv nrog cov pob tshab siab.Lub siab xav kom muaj kev pom tseeb hauv kev tsim qauv coj mus rau kev txhim kho thiab siv cov phab ntsa cable mesh thiab bolt-txhawb phab ntsa sab nrauv.Architecturally nyuaj landmark vaj tse yuav suav nrog niaj hnub technology thiab yuav tsum ua raws li lub zos lub tsev thiab kev nyab xeeb cov cai thiab cov qauv.
Cov pob tshab pob tshab silicone nplaum (TSSA) tau kawm, thiab ib txoj hauv kev los txhawb cov iav nrog ntsia liaj qhov rooj kho qhov chaw es tsis txhob drilling qhov tau thov [6] [7].Lub pob tshab kua nplaum thev naus laus zis nrog lub zog, adhesion thiab durability muaj ntau lub zog ntawm lub cev uas tso cai rau cov neeg tsim qauv ntawm phab ntsa los tsim cov kev sib txuas hauv ib qho tshwj xeeb thiab tshiab.
Round, rectangular thiab triangular accessories uas ua tau raws li kev zoo nkauj thiab cov qauv kev ua tau zoo yog qhov yooj yim rau kev tsim.TSSA tau kho ua ke nrog cov iav laminated ua tiav hauv autoclave.Tom qab tshem tawm cov khoom los ntawm lub voj voog autoclave, 100% kev kuaj xyuas tuaj yeem ua tiav.Qhov kev lees paub zoo no yog qhov tshwj xeeb rau TSSA vim tias nws tuaj yeem muab cov lus tawm tswv yim tam sim ntawm cov qauv kev ncaj ncees ntawm lub rooj sib txoos.
Qhov cuam tshuam tsis kam [8] thiab kev poob siab nqus ntawm cov khoom siv silicone cov qauv tau raug kawm [9].Wolf et al.muab cov ntaub ntawv tsim los ntawm University of Stuttgart.Cov ntaub ntawv no qhia tau hais tias, piv nrog quasi-static strain tus nqi teev hauv ASTM C1135, lub zog tensile ntawm cov khoom siv silicone yog qhov kawg ntawm tus nqi ntawm 5m / s (197in / s).Lub zog thiab elongation nce.Qhia txog kev sib raug zoo ntawm lub cev thiab lub cev.
Txij li TSSA yog cov khoom siv elastic heev nrog ntau dua modulus thiab lub zog dua li cov qauv silicone, nws yuav tsum ua raws li qhov kev ua tau zoo ib yam.Txawm hais tias kev sim kuaj nrog cov qib siab tsis tau ua tiav, nws tuaj yeem xav tias qhov siab ntawm qhov tawg yuav tsis cuam tshuam rau lub zog.
Cov iav bolted tau raug sim, ua tau raws li cov qauv kev sib tsoo tawg [11], thiab tau nthuav tawm ntawm 2013 Glass Performance Day.Cov txiaj ntsig pom tau meej meej qhia qhov zoo ntawm kev kho cov iav tom qab lub iav tawg.Rau cov tshuab nrog cov nplaum nplaum dawb huv, qhov no yuav yog qhov nyuaj.
Cov ncej yog ua los ntawm American standard steel channel nrog qhov ntev ntawm 151mm qhov tob x 48.8 hli dav x 5.08mm web thickness (6 "x 1.92" x 0.20"), feem ntau hu ua C 6 "x 8.2# qhov.Cov kab C yog welded ua ke ntawm cov ces kaum, thiab 9 hli (0.375 nti) tuab daim duab peb sab yog welded ntawm cov ces kaum, teem rov qab los ntawm qhov chaw ntawm tus ncej.Ib lub qhov 18 hli (0.71 ") tau drilled rau hauv lub phaj kom lub bolt nrog ib txoj kab uas hla ntawm 14mm (0.55") tau yooj yim muab tso rau hauv nws.
TSSA hlau fittings nrog ib txoj kab uas hla ntawm 60 hli (2.36 nti) yog 50 hli (2 nti) ntawm txhua lub ces kaum.Siv plaub fittings rau txhua daim iav kom txhua yam sib luag.Lub cim tshwj xeeb ntawm TSSA yog tias nws tuaj yeem muab tso rau ze rau ntawm ntug iav.Drilling accessories rau cov neeg kho tshuab kho hauv iav muaj qhov ntev tshwj xeeb pib ntawm ntug, uas yuav tsum tau muab tso rau hauv qhov tsim thiab yuav tsum tau drilled ua ntej tempering.
Qhov loj nyob ze ntawm ntug txhim kho qhov pom ntawm qhov ua tiav, thiab tib lub sijhawm txo qhov adhesion ntawm lub hnub qub sib koom vim qhov qis torque ntawm lub hnub qub sib koom ua ke.Cov iav xaiv rau qhov project no yog ob 6mm (1/4 ") tempered pob tshab 1524mm x 1524mm (5'x 5') txheej laminated nrog Sentry Glass Plus (SGP) ionomer intermediate zaj duab xis 1.52mm (0.060) ").
1 hli (0.040 nti) tuab TSSA disc yog siv rau 60 hli (2.36 nti) txoj kab uas hla primed stainless hlau haum.Lub primer yog tsim los txhim kho lub durability ntawm adhesion rau stainless hlau thiab yog ib tug sib tov ntawm silane thiab titanate nyob rau hauv ib tug hnyav.Cov hlau disc yog nias tawm tsam lub iav nrog lub zog ntsuas ntawm 0.7 MPa (100 psi) rau ib feeb kom muab ntub dej thiab tiv tauj.Muab cov khoom tso rau hauv ib qho autoclave uas ncav cuag 11.9 Bar (175 psi) thiab 133 C ° (272 ° F) kom TSSA tuaj yeem ncav cuag 30-feeb so lub sij hawm xav tau rau kev kho thiab kev sib txuas hauv autoclave.
Tom qab lub autoclave ua tiav thiab txias, tshuaj xyuas txhua TSSA haum thiab tom qab ntawd ceev nws mus rau 55Nm (40.6 ko taw phaus) kom pom cov qauv thauj khoom ntawm 1.3 MPa (190 psi).Accessories rau TSSA yog muab los ntawm Sadev thiab raug txheeb xyuas raws li R1006 TSSA accessories.
Sib sau ua ke lub cev tseem ceeb ntawm cov khoom siv rau kev kho disc ntawm lub khob thiab txo qis rau hauv cov ncej hlau.Kho thiab kho cov txiv ntseej ntawm lub bolts kom lub iav sab nraud yog flush nrog sab nraud ntawm cov ncej steel.Lub 13mm x 13mm (1/2 "x½") sib koom ua ke nyob ib puag ncig lub iav perimeter yog kaw nrog ob feem ntawm cov qauv ntawm silicone kom qhov kev ntsuas siab tuaj yeem pib hnub tom qab.
Qhov kev sim no tau ua los ntawm kev siv lub raj poob siab ntawm Explosives Research Laboratory ntawm University of Kentucky.Lub shock absorbing raj yog tsim los ntawm lub cev muaj zog steel, uas tuaj yeem txhim kho chav nyob txog 3.7mx 3.7m ntawm lub ntsej muag.
Qhov cuam tshuam lub raj yog tsav los ntawm kev tso cov khoom tawg raws qhov ntev ntawm lub raj tawg los simulate qhov zoo thiab qhov tsis zoo ntawm qhov kev tshwm sim tawg [12] [13].Muab tag nrho cov iav thiab steel ncej los ua ke rau hauv lub raj poob siab rau kev sim, raws li qhia hauv daim duab 4.
Plaub lub siab sensors tau nruab rau hauv lub raj poob siab, yog li lub siab thiab mem tes ntsuas tau raug ntsuas.Ob lub koob yees duab yees duab digital thiab lub koob yees duab digital SLR tau siv los kaw qhov kev sim.
Lub MREL Ranger HR lub koob yees duab ceev ceev nyob ze ntawm lub qhov rais sab nraum lub raj poob siab tau ntes qhov kev sim ntawm 500 ntas ib ob.Teem lub 20 kHz deflection laser cov ntaub ntawv ze ntawm lub qhov rais los ntsuas qhov deflection ntawm qhov nruab nrab ntawm lub qhov rais.
Plaub lub hauv paus ntsiab lus tau sim cuaj zaug hauv tag nrho.Yog tias lub iav tsis tawm ntawm qhov qhib, rov ua dua cov khoom hauv qab siab dua thiab cuam tshuam.Nyob rau hauv txhua rooj plaub, lub hom phiaj siab thiab impulse thiab iav deformation cov ntaub ntawv raug kaw.Tom qab ntawd, txhua qhov kev xeem kuj raug ntsuas raws li AAMA 510-14 [Festestration System Voluntary Guidelines for Explosion Hazard Mitigation].
Raws li tau piav qhia saum toj no, plaub lub rooj sibtham tau raug sim kom txog thaum lub iav raug tshem tawm ntawm qhov qhib ntawm qhov chaw nres nkoj tawg.Lub hom phiaj ntawm qhov kev xeem thawj zaug yog kom ncav cuag 69 kPa ntawm lub mem tes ntawm 614 kPa-ms (10 psi A 89 psi-msec).Nyob rau hauv daim ntawv thov load, lub iav qhov rais tawg thiab tso tawm ntawm tus ncej.Sadev point fittings ua TSSA ua raws li cov iav tempered tawg.Thaum lub iav toughened tawg, lub iav sab laug qhov qhib tom qab deflection ntawm kwv yees li 100 hli (4 nti).
Nyob rau hauv cov xwm txheej ntawm nce nruam load, thav duab 2 tau sim 3 zaug.Cov txiaj ntsig tau pom tias qhov tsis ua haujlwm tsis tshwm sim kom txog thaum lub siab mus txog 69 kPa (10 psi).Kev ntsuas siab ntawm 44.3 kPa (6.42 psi) thiab 45.4 kPa (6.59 psi) yuav tsis cuam tshuam rau kev ncaj ncees ntawm cov khoom.Nyob rau hauv qhov ntsuas siab ntawm 62 kPa (9 psi), qhov deflection ntawm lub iav ua rau tawg, tawm hauv lub qhov rais iav hauv qhov qhib.Tag nrho TSSA cov khoom siv tau txuas nrog cov iav tawg, ib yam li hauv daim duab 7.
Nyob rau hauv cov xwm txheej ntawm kev nce ntxiv load, thav duab 3 tau sim ob zaug.Cov txiaj ntsig tau pom tias qhov ua tsis tiav tsis tshwm sim kom txog thaum lub siab mus txog lub hom phiaj 69 kPa (10 psi).Kev ntsuas siab ntawm 48.4 kPa (7.03) psi yuav tsis cuam tshuam rau kev ncaj ncees ntawm cov khoom.Kev sau cov ntaub ntawv tsis tuaj yeem tso cai deflection, tab sis kev pom kev pom los ntawm cov yeeb yaj kiab tau pom tias qhov deflection ntawm ncej 2 xeem 3 thiab thav duab 4 xeem 7 zoo ib yam.Nyob rau hauv qhov ntsuas siab ntawm 64 kPa (9.28 psi), qhov deflection ntawm iav ntsuas ntawm 190.5 hli (7.5 ″) ua rau tawg, tawm hauv lub qhov rais iav hauv qhov qhib.Tag nrho TSSA cov khoom siv tau txuas nrog cov iav tawg, tib yam li daim duab 7.
Nrog nce nruam load, tus ncej 4 tau sim 3 zaug.Cov txiaj ntsig tau pom tias qhov ua tsis tiav tsis tshwm sim kom txog thaum lub siab mus txog lub hom phiaj 10 psi rau zaum ob.Kev ntsuas siab ntawm 46.8 kPa (6.79) thiab 64.9 kPa (9.42 psi) yuav tsis cuam tshuam rau kev ncaj ncees ntawm cov khoom.Hauv kev sim #8, lub iav tau ntsuas kom khoov 100 hli (4 nti).Nws cia siab tias qhov kev thauj khoom no yuav ua rau lub khob tawg, tab sis lwm cov ntaub ntawv cov ntsiab lus tuaj yeem tau txais.
Hauv kev sim #9, qhov ntsuas siab ntawm 65.9 kPa (9.56 psi) deflected iav los ntawm 190.5 hli (7.5 ″) thiab ua rau tawg, tawm hauv lub qhov rais iav hauv qhov qhib.Tag nrho TSSA cov khoom siv tau txuas nrog tib lub iav tempered tawg raws li hauv daim duab 7 Nyob rau hauv txhua rooj plaub, cov khoom siv tau yooj yim tshem tawm ntawm cov ncej steel yam tsis muaj kev puas tsuaj.
TSSA rau txhua qhov kev xeem tseem tsis hloov pauv.Tom qab qhov kev sim, thaum lub iav tseem nyob twj ywm, tsis muaj qhov pom kev hloov hauv TSSA.Cov vis dis aus siab ceev qhia cov iav tawg ntawm qhov nruab nrab ntawm qhov ncua sij hawm thiab tom qab ntawd tawm hauv qhov qhib.
Los ntawm kev sib piv ntawm iav tsis ua hauj lwm thiab tsis ua hauj lwm nyob rau hauv daim duab 8 thiab daim duab 9, nws yog nthuav kom nco ntsoov tias lub iav tawg hom tshwm sim nyob deb ntawm qhov txuas taw tes, uas qhia tau hais tias qhov unbonded ib feem ntawm lub iav tau mus txog qhov khoov taw tes, uas. yog sai sai Qhov brittle yield point ntawm iav yog txheeb ze rau ib feem uas tseem bonded.
Qhov no qhia tau hais tias thaum lub sij hawm xeem, cov phaj tawg nyob rau hauv cov khoom no yuav txav mus rau hauv shear quab yuam.Kev sib xyaw cov ntsiab lus no thiab kev soj ntsuam tias hom tsis ua haujlwm zoo li yog qhov embrittlement ntawm iav tuab ntawm cov nplaum sib txuas, raws li cov ntawv sau tau nce, qhov kev ua tau zoo yuav tsum tau txhim kho los ntawm kev ua kom cov iav tuab los yog tswj cov deflection los ntawm lwm txoj kev.
Kev xeem 8 ntawm Ncej 4 yog ib qho kev xav tsis thoob hauv qhov chaw sim.Txawm hais tias lub iav tsis raug puas ntsoog kom cov thav duab tuaj yeem kuaj dua, TSSA thiab cov hlua khi ib puag ncig tseem tuaj yeem tuav cov khoom loj no.TSSA system siv plaub 60mm txuas los txhawb lub iav.Cov qauv cua thauj khoom yog nyob thiab ruaj khov, ob qho tib si ntawm 2.5 kPa (50 psf).Qhov no yog ib qho qauv tsim, nrog rau qhov zoo tshaj plaws architectural transparency, exhibits tsis tshua muaj loads, thiab TSSA tseem zoo lawm.
Txoj kev tshawb no tau ua los txiav txim siab seb qhov nplaum nplaum ntawm lub iav puas muaj qee qhov kev phom sij lossis qhov tsis xws luag hauv cov ntsiab lus ntawm qib qis rau kev ua haujlwm sandblasting.Pom tseeb, ib qho yooj yim 60mm TSSA accessory system yog ntsia ze ntawm ntug iav thiab muaj qhov ua tau zoo kom txog thaum lub khob tawg.Thaum lub iav yog tsim los tiv thaiv kev tawg, TSSA yog ib txoj kev sib txuas uas muaj peev xwm muab tau qee qhov kev tiv thaiv thaum tswj lub tsev cov kev cai rau pob tshab thiab qhib.
Raws li ASTM F2912-17 tus qauv, cov khoom siv lub qhov rais kuaj tau mus txog qib H1 txaus ntshai ntawm C1 tus qauv.Sadev R1006 accessory siv nyob rau hauv txoj kev tshawb no tsis cuam tshuam.
Cov iav tempered siv nyob rau hauv txoj kev tshawb no yog "tsis muaj zog txuas" hauv qhov system.Thaum lub khob tawg lawm, TSSA thiab cov hlua khi ib puag ncig tsis tuaj yeem khaws cov iav ntau, vim tias cov iav tawg me me tseem nyob ntawm cov khoom siv silicone.
Los ntawm kev tsim thiab kev ua tau zoo ntawm qhov pom, TSSA nplaum qhov system tau raug pov thawj los muab kev tiv thaiv qib siab hauv cov khoom tawg-qib facade ntawm thawj theem ntawm kev ua haujlwm tawg, uas tau lees paub los ntawm kev lag luam.Lub facade kuaj pom tau hais tias thaum muaj kev phom sij tawg nyob nruab nrab ntawm 41.4 kPa (6 psi) thiab 69 kPa (10 psi), qhov kev ua tau zoo ntawm qib txaus ntshai yog qhov sib txawv.
Txawm li cas los xij, nws yog ib qho tseem ceeb uas qhov sib txawv ntawm kev faib cov phom sij tsis yog los ntawm cov nplaum tsis ua hauj lwm raws li qhia los ntawm kev sib txuam tsis ua hauj lwm hom ntawm cov nplaum thiab cov iav tawg ntawm qhov muaj kev phom sij.Raws li kev soj ntsuam, qhov luaj li cas ntawm lub iav yog tsim nyog los txo qis deflection los tiv thaiv brittleness vim muaj zog shear teb ntawm lub interface ntawm dabtsi yog khoov thiab txuas, uas zoo li yog ib qho tseem ceeb ntawm kev ua tau zoo.
Cov qauv tsim yav tom ntej tuaj yeem tuaj yeem txo qhov kev phom sij nyob rau hauv cov khoom hnyav dua los ntawm kev ua kom cov iav tuab, txhim kho txoj hauj lwm ntawm cov ntsiab lus txheeb ze rau ntawm ntug, thiab nce txoj kab uas hla ntawm cov nplaum nplaum.
[1] ASTM F2912-17 Standard iav Fiber Specification, iav thiab iav Systems Subject to High Altitude Loads, ASTM International, West Conshawken, Pennsylvania, 2017, https://doi.org/10.1520/F2912-17 [2] Hilliard, JR, Paris, CJ thiab Peterson, CO, Jr., "Structural Sealant Glass, Sealant Technology for Glass Systems", ASTM STP 638, ASTM International, West Conshooken, Pennsylvania, 1977, p.67-99 : kuv.[3] Zarghamee, MS, TA, Schwartz, thiab Gladstone, M. , “Seismic Performance of Structural Silica Glass”, Building Sealing, Sealant, Glass and Waterproof Technology, Volume 1. 6. ASTM STP 1286, JC Myers, editor, ASTM International, West Conshohocken, Pennsylvania, 1996, pp. 46-59.[4] Carbary, LD, "Tshuaj xyuas ntawm Kev Ua Haujlwm Zoo thiab Kev Ua Haujlwm ntawm Silicone Cov Qauv iav Qhov rai Systems", Hnub Ua Haujlwm iav, Tampere Finland, Lub Rau Hli 2007, Kev Sib Tham Txheej Txheem, nplooj 190-193.[5] Schmidt, CM, Schoenherr, WJ, Carbary LD, thiab Takish, MS, "Kev Ua Haujlwm ntawm Silicone Structural Adhesives", iav System Science thiab Technology, ASTM STP1054, CJ University of Paris, American Society for Testing and Materials, Philadelphia, 1989 Xyoo, pp. 22-45 [6] Wolf, AT, Sitte, S., Brasseur, M., J. and Carbary L. D, “Transparent Structural Silicone Adhesive for Fixing Glazing Dispensing (TSSA) Preliminary assessment of the mechanical Cov khoom thiab durability ntawm cov hlau", Lub Plaub Hlis International Durability Symposium "Kev Tsim Kho Sealants thiab Adhesives", ASTM International Magazine, luam tawm online, Lub Yim Hli 2011, Volume 8, Issue 10 (11 Kaum Ib Hlis 2011 Lub Hlis), JAI 104084, muaj los ntawm lub vev xaib nram qab no : www.astm.org/DIGITAL_LIBRARY/JOURNALS/JAI/PAGES/JAI104084.htm.[7] Clift, C., Hutley, P., Carbary, LD, Transparent structure silicone adhesive, Glass Performance Day, Tampere, Finland, Lub Rau Hli 2011, Kev Ua Haujlwm ntawm lub rooj sib tham, nplooj 650-653.[8] Clift, C., Carbary, LD, Hutley, P., Kimberlain, J., “New Generation Structural Silica Glass” Facade Design and Engineering Journal 2 (2014) 137–161, DOI 10.3233 / FDE-150020 [ 9 ] Kenneth Yarosh, Andreas T. Wolf, thiab Sigurd Sitte “Kev soj ntsuam ntawm Silicone Rubber Sealants nyob rau hauv Kev Tsim ntawm Bulletproof Windows thiab Curtain Walls at High Moving Rates”, ASTM International Magazine, Issue 1. 6. Paper No. 2, ID JAI101953 [ 10] ASTM C1135-15, Standard Test Method for Determining the Tensile Adhesion Performance of Structural Sealants, ASTM International, West Conshohocken, Pennsylvania, 2015, https://doi.org/10.1520/C1135-15, [11.] , "Progress in Explosion-proof Bolt-Fixed Glass", Hnub Kev Ua Haujlwm iav, Lub Rau Hli 2103, cov lus sib tham, pp. 181-182 [12] ASTM F1642 / F1642M-17 Standard test method for glass and glass systems raug cua kub loads , ASTM International, West Conshohocken, Pennsylvania, 2017, https://doi.org/10.1520/F1642_F1642M-17 [13] Kab tshoob, William Chad thiab Braden T.Lusk."Ib txoj hauv kev tshiab rau kev txiav txim siab cov lus teb ntawm cov iav tiv thaiv tawg rau cov khoom tawg."Metric 45.6 (2012): 1471-1479.[14] “Cov Lus Qhia Txog Kev Ua Haujlwm Rau Kev Txom Nyem Ntawm Qhov Kev Txhaum Txhaum Txhaum Cai ntawm Vertical Window Systems” AAMA 510-14.