Alternative Construction Research Guide - GCCDS

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1.4 | Hybrid HomesHybrid HomesOverview: A hybrid system will use factory-assembledelements in conjunction with site-built systems. Theexample of a hybrid home discussed here is a home builtusing two halves of a modular home with a traditionaltimber frame connection between the two. While allpre-manufactured systems (panel, modular, etc) requiresome on-site construction, a hybrid system attempts touse pre-manufactured elements of one or more types withsite-built systems in a way that amplifies each system’sstrengths while mitigating its weaknesses.INSTALLATION<strong>Construction</strong> Process: Building a house that has morethan one construction type or system can be difficult. Witheach system that is added the project becomes more complicated.Constructing a home that is a hybrid of on-siteand off-site elements will require extra time for planningthe connections between different assemblies. Time spentplanning up front can yield advantages in the speed ofconstruction in the field.Speed of <strong>Construction</strong>: A hybrid strategy will normallybe employed to shorten the construction time ona project by completing the parts that can be assembledmost quickly off-site in a factory and adding the parts thatcan be built most quickly on-site once construction hasbegun.Delivery Method: Whether panels or modules, thepre-manufactured elements will be delivered and installedthe same way they would if used solo. Because differenttypes of construction are combined in the building of ahybrid home, it is likely that the materials will need to beacquired from more then one source.Required Equipment: The required equipment for ahybrid project is the same as the equipment needed to in-(Figs.17-18) Pre-manufactured modules can be used in a variety ofways. They can also be combined with site-built construction to expandthe possible forms the home can be built in.(Fig.19) Auburn University’s DESIGNHabitat students work on a projectthat is an example of how on-site construction can combine pieces offactory-assembled modular homes to create a hybrid home.
stall whatever the factory assembled system is; this mightinclude cranes, equipment, lulls, and riggings.Specialized Labor: The specialized labor needed fora hybrid project is the same as the equipment needed toinstall the pre-manufactured system; this might includecrane operators, truck drivers, and licensed installers.PERFORMANCEWind Load: Wind load performance depends on thespecifics of the modules used and their connections tothe site-built elements. An engineer should be consultedwhenever using a pre-built modular or panel system inconjunction with structural site work, as an unusual use ofa product might weaken it.Water Resistance: Water resistance depends on thespecifics of those modules used and their connections tothe site-built elements.Fire Resistance: Fire resistance depends on the specificsof those modules used and their connections to thesite-built elements.Hybrid Homes | 1.4Market Exposure: This is not a common method ofconstruction.Code Approval: Unusual installation of pre-manufacturedproducts might require a closer inspection beforethey are approved.Affordability: The affordability is difficult to judge.A hybrid building strategy could be used to increase ahome’s affordability while keeping construction timedown through the use of site built elements.Coastal Considerations: Like many construction systemsthe strength of the connections between elements isan important coastal consideration.GULF COAST AVAILABILITY /LOCAL MANUFACTURERSAny of the suppliers mentioned in the “Factory Assembled”or “Panelized” chapters are possible partnersin constructing a hybrid home. There are no examples ofcontractors on the Gulf Coast doing this work at the timeof this publication. Auburn University has an academicproject working to develop hybrid homes in Alabamacalled DESIGNhabitat. 9Energy / Thermal: Performance depends on the specificsof those modules used and their connections to thesite-built elements. Enhancing a modular unit’s thermalperformance is something that might be done throughon-site construction in a hybrid home.Life Span: Life span is difficult to determine.Common Failure: The most difficult aspect of buildinga hybrid home is the connection between the modularpieces of the building and the site-built pieces of thebuilding. Incorrectly joining these two systems wouldlikely be a common failure.DESIGNEnvironmental Impact: The environmental impact isdifficult to judge. A hybrid building strategy could be usedto increase a home’s positive environmental impact whilekeeping costs or construction time down through the useof site-built elements.Versatility / Flexibility: The hybrid strategy adds agreat deal of flexibility to pre-manufactured products. Itis important to check to make sure that the installation ofthe product is not so unusual as to void any warranty orcause a failure in product operation.(Fig.20) Auburn University’s Design Habitat students work on a projectthat is an example of how on-site construction can combine pieces offactory assembled modular homes to create a hybrid home.
Page 3: The Gulf Coast Community Design Stu
Page 10: factoryassembledhomesconstructionpr
Page 13 and 14: Required Equipment: A crane and lif
Page 15 and 16: Component Homes | 1.2Component Home
Page 17 and 18: DESIGNComponent Homes | 1.2Environm
Page 19: PERFORMANCEWind Load: Kits can be d
Page 24 and 25: panelsconstructionprocessspeeddeliv
Page 26 and 27: 2.1 | Wood SIPsWood SIPsOverview: S
Page 28 and 29: 2.1 | Wood SIPsLife Span: The OSB a
Page 30 and 31: 2.1 | Wood SIPsMM & I Construction
Page 32 and 33: 2.2 | Non-Wood SIPsand full constru
Page 34 and 35: 2.2 | Non-Wood SIPssome information
Page 36: 2.3 | Framed PanelsThe strength of
Page 39 and 40: Stacked Unit SystemsStacked unit sy
Page 41 and 42: 3STACKED UNIT SYSTEMSsubjects3.1 In
Page 43 and 44: should be done carefully, as the co
Page 45 and 46: Concrete Masonry Units (CMU) | 3.2C
Page 47 and 48: Concrete Masonry Units (CMU) | 3.2D
Page 49 and 50: AAC is naturally resistant to termi
Page 51 and 52: Framing SystemsFraming systems are
Page 53 and 54: 4FRAMING SYSTEMSsubjects4.1 Convent
Page 55 and 56: which allows for expedient construc
Page 57 and 58: Advanced Wood Framing | 4.2Advanced
Page 59 and 60: esidential building codes but may n
Page 61 and 62: ut can be designed to carry increas
Page 63 and 64: Water Resistance: Steel studs are t
Page 65 and 66: Engineered Floor Trusses | 4.5Engin
Page 67 and 68: Versatility / Flexibility: Engineer
Page 69 and 70: equired, construction crews should
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Chapter 5, Elevated Foundations, is
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floorsconstructionprocessspeeddeliv
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6.1 | 2x6 Tongue and Groove Decking
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6.2 | Suspended Cast-in-Place Decks
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6.2 | Suspended Cast-in-Place Decks
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6.3 | Floor FinishesSpeed of Constr
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6.3 | Floor FinishesGULF COAST AVAI
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insulationrequiredequipmentthermalp
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7.1 | Exterior FinishesExterior Fin
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7.1 | Exterior FinishesEnergy / The
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7 .2 | SheathingSheathingOverview:
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7 .2 | SheathingMarket Exposure: OS
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7.3 | InsulationAfter the foam drie
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7.3 | InsulationInstallation: Miner
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7.4 | Interior Finishesthe job and
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7.4 | Interior FinishesWOOD & WOOD
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7.4 | Interior FinishesMASONRYStone
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oofsconstructionprocessspeeddeliver
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8.1 | Radiant BarriersRoofRadiant b
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8.1 | Radiant Barrierssometimes rea
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8.2 | ShinglesEnergy/Thermal: Aspha
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8.3 | Metal RoofsBecause the screws
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8.4 | Tile RoofsPERFORMANCETile Roo
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8.5 | Rubber RoofsINSTALLATIONRubbe
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8.5 | Rubber RoofsDESIGNEnvironment
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App. I | Insuring HomesI. Insuring
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App. II | Energy Efficiency in Home
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App. II | Energy Efficiency in Home
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App. III | Site WorkIII. Site WorkT
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App. IV | Further ResearchIV. Furth
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App. V | GlossaryCompression: Physi
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App. V | GlossaryShear Wall: Walls
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App. VI | EndnotesChapter 3: Cast a
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App. VI | Endnotes2. “HardiePlank
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App. VII | Images UsedFig.8Fig.9Fig
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App. VII | Images UsedFig.16Fig.17I
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App. VII | Images UsedFig.2Fig.3Fig
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Alternative Construction Research Guide - GCCDS

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