Physical parameters of straw insulated wooden house construction is a part of straw house design. http://www.kovacarchitekt.sk/

1. Heavy wooden vertical
constructions insulated
by straw bales
Young Scientist 2015
Influence of using straw bales insulation
material on architectural form of the object
Ing. arch. Miloslav Kováč
Prof. Ing. arch. Peter Pásztor, PhD.

2. Content
- Types of straw bale insulated
constructions
- Specification of Physical and constructional schedule
- Heavy vertical constructions
- Architectural review

3. Light vertical constructions
Ladder/ truss system I-beam system LPVC2
One component system L VTwo by four
ystem
Standard system Individual system
Light system PVC1 Heavy system PVC2
Heavy vertical constructions
Prefabricated vertical constructions

5. -SoftwareTherm 6.2
- Exterior temperature θe Košice -13°C
- Interior temperature θi +20°C
- Software Teplo 2010
- Boundary conditions STN 73 0540-3
except straw
- Influence of closed cavity
- Influence of thermal bridge

6. -SoftwareTherm 6.2
- Exterior temperature θe Košice -13°C
- Interior temperature θi +20°C
- Software Teplo 2010
- Boundary conditions STN 73 0540-3
except straw
- Influence of closed cavity
- Influence of thermal bridge

7. -SoftwareTherm 6.2
- Exterior temperature θe Košice -13°C
- Interior temperature θi +20°C
- Software Teplo 2010
- Boundary conditions STN 73 0540-3
except straw
- Influence of closed cavity
- Influence of thermal bridge

8. -SoftwareTherm 6.2
- Exterior temperature θe Košice -13°C
- Interior temperature θi +20°C
- Software Teplo 2010
- Boundary conditions STN 73 0540-3
except straw
- Influence of closed cavity
- Influence of thermal bridge
- Moisture content effect included
- Convection and radiation effect
decrease insulation properties 20-50%
- Heavy constructions about 20%
J.E.Christian (1998), Andersen (2004),
Grmela (2012), Atkinson (2008)

13. Thermaltransmittance
Constructionalconclusions

14. Foundation / plan engineering
1. Light I-beam con. 2. Light con. 3. Heavy con. 4. Prefabricated con.

15. Roof shape/ overhang engineering
1. Straw/ thatch 2. Earth/ earth 3. Wood/ wood 4. Prefabricated
combination

16. Window opening details
1. Interior opening design 2.Solar house windows shaping

17. Interior/ exterior façade design
1. Revealed construction 2.Openings and niches in insulation layer

18. - Shape free disposition plan
- Revealed construction
Overall
Architecturalconclusions
- Large/ free shape openings
- Revealed construction architectural value (natural trunks)
- Better U value compared to similar compositions of others systems. Higher
about 0,02 W/m2
.K
- Possibility of creating niches/built-in furniture
- Demand for anchoring straw bales
- Point load pressure adjusted in foundations
- Demand for additional construction – cladding/ ventilated facade

19. Thank you
for your
attention