building with straw lecture tu delft

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Lecture of today

Stobouw Nederland

Building with straw

Your second skin, CO2 neutral

TU DelftOct 27th 2015

Content of the presentation:

- Why build with straw- Over a century of building

with straw- Modern straw construction

examples- Straw & Straw- Construction process for

straw as infill (the Dutch way)

- Working together . . YES

Short introductionActive with stro building since 2010:

board Strobouw Nederlandinternational contact construction supervision advice & construct

Also biobased and natural building

[email protected] Sissy Verspeek

http://www.natuurlijk-thuis.nl/


Short introductionActive with stro building since 2009:

board Strobouw Nederlandbuildingmethodes & detailstraining & workshops international contact construction supervision advice & constructthermograophy

[email protected] Wouter Klijn

http://www.strobouwer.nl/


It is a non-ending materialhas a low energy contentcan isnsulate well (heat and noise)has a reasonable thermal masscan give a healthy buildingIs in dry form very stableprovides storage of large amounts of CO2 is good recyclable / compostable

There are few materials that score better on all these points.

Why build with straw?


Primary energie needed and CO2 produced per m2 insulation materials


Primary energie needed and CO2 produced per house

History2 more reasons to build with straw:

- The bale-press was invented in Amerika around 1893

- In Nebraska was, due to poor supply, in 1900 a lack of construction materials.

HistoryAround 1900 arose in the area of Nebraska the first straw bale buildings.

And some of these still exists…



Sturtz Ranch House, Nebraska USA, 1905



Pilgrim Holiness Church, Arthur, Nebraska USA, 1928

HistoryFeuillette HouseMontargisFrance1921 - 2015

History NLHeeze1942 – 1944the Netherlands

The first 2 Straw bale houses

J. Gubbels, Riels Hut en Huize Heivelden, Heeze 1942-44

Development in NLFirst house with a permit

-construction: steel / condensation-ouside earth plaster: rain damage

Fam Sonneveld, Ouwerkerk, 1998.

Development in NLSelf build- Steel construction with

straw- Clean finish

Robert W. Jansen, Markelo, 2003.

Development in NLPrefab straw building:- Façade-wide panels- Outside covered with

wood- Inside finished with loam


Fillie & Verhoeven, R.Dalmeijer, IJburg, 2008

Development in NLStraw infill in wood-structure:- Professional build- Straw building by owner- Finisched with lime-

plaster

Development in NLStraw prefab panels:- Closed box construction- Roof and wall with reed- Professional build- Straw by sub-contractor

Development in NLSociale housing (rent):- Professional build- Straw and plaster by

tenants- Deffirent combinations of

housing- Co-housing

Iewan, Nijmegen Lent, 2014

Modern straw buildingPrefab straw building:- Laminated wooden frame- Low maintenace cost- 1500-1600 euro/m2- 40kWh/m2/year- Social housing


Jules Ferry Residence, Frankrijk, 7 storeys in staw

Modern straw building

Renovation straw building:- Façade and roof- Special carrier- Green roof- Façade with wooden

cladding

Schwerin, Germany, renovation old brauwerei.


Schwerin, Duitsland, renovatie oude brauwerei.


Prefab façade with straw- Office, 5 storeys- CO2 neutral- Directly on straw

plastered

Center for Sustainable Constructions, Verden, 2014


Prefab façade with straw- Classrooms- Laboratories- Offices

Make Archi. , Gateway building University of Nottingham


Prefab straw building- Façade and roof with

straw- Construction of wood

Elementary school, Montreuil, Paris


Infill straw building- Façade and roof with

straw- Construction of wood- Straw building with

volunteers

Enno-Narten-Building, Youth Castle, Ludwigstein, Germany


Load barring srtaw construction

- Straw building without construction

- Large and small straw bales

Load barring straw building, Wahlen, Switzerland


STRAW & STRAW

- 48x36cm, length: 60-110cm (small bale)

- 90-110 kg/m3

- RH: <15%

- Weed: <0,5 % (mass)

- Residual weat: <0,4 % (mass)

- Conductivity (on edge): 0,04 – 0,05 W/mK - Conductivity (flat): 0,07 - 0,08 W/mK

- Fire rating: B2

- Fire protection: F-30 tot F-90

- Biological degradation: classe 2-3

STRAW & STRAWThermal conductivity is determined by the main direction of the straw itself, not by the density.

STRAW & STRAW

A wall of straw can be is as thick as a standard wall with the same thermal quality.(Rc = 7)

STRAW & STRAWWith a 10mm plaster layer the straw wall gives you fire resistance of 90 min.

Modcel did successful tests with their straw module reaching over 2 hours of fire resistance.

STRO & STROWood-frame construction with straw may increase earthquake providence security.

STRO & STROStraw gives increase attenuation of sound.

STRAW as infillStraw bale on-its-sideTimber frame with two postsInside: constructiveOutside: wears the façade

SSTRAW as infillStraw bale on-its-sideTimber frame with two stylesInside: constructiveOutside: wears the façade

Skirting construction

STRAW as infillStraw bale on-its-sideTimber frame with two stylesInside: constructiveOutside: wears the façade

Skirting constructionTimber framing


Skirting constructionTimber framing Straw placing


Skirting constructionTimber framingStraw placingStraw flattened


Skirting constructionTimber framingStraw placingStraw flattenedStraw protected with clay and covered with wood

STRAW airtight

Continues to be a very importannt but often forgotten aspect.

STRAW airtight

-design of wood structureneeds to be based on straw-airtight tape between rigid parts

-use softwoodboard as render support

Leonardo DaVincipartnership 2011-2015Creating a framework for an international agreed: “professional education” www.strawleonardo.eu

http://www.strawleonardo.eu/

ESBA European Straw Building Association (2015?)

- Target is:

Foundation of ESBA inOct-Nov 2015

- Members are:

The national “associations”

- Main object is:

To promote and develop the use of straw in the construction sector in the EU.

Straw tomorrow . . . . ?

YES !

https://www.google.nl/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja&uact=8&ved=0CAUQjRxqFQoTCPn47Pro38gCFUK9GgodDtAF-g&url=http://nieman.nl/wp-content/uploads/2015/06/2015-06_Strowijk-aan-de-Waal.pdf&psig=AFQjCNFXtjhXjASOvpvydRNeMTAh9q9Bvw&ust=1445937994497910

https://www.google.nl/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRxqFQoTCNvImKPr38gCFcQDGgodKZIJ2Q&url=https://twitter.com/interreg_nwe&bvm=bv.105841590,d.d2s&psig=AFQjCNFVbFsMjI68A8srZKn5leoD7gc5WQ&ust=1445938610124956

Coming Lecture

Graduate on natural building? Explore Lab offers 5 places, coming FebruaryEmail Robert Nottrot: [email protected] to the explore lab meeting on Nov. 5th, 12:45, Room P


building with straw lecture tu delft

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