PDC Natural Building & Shelter Design

Question 1

What is the primary principle behind passive solar design in natural building?

Accepted Answer

Using the sun's energy for heating and cooling without mechanical systems

Answer

Passive solar design harnesses the sun's energy for heating, cooling, and lighting without relying on active mechanical systems.

Question 2

Which natural building material is made by mixing subsoil clay, sand, straw, and water, then shaped into walls by hand?

Accepted Answer

Cob

Answer

Cob is a monolithic natural building material made by mixing subsoil, sand, straw, and water, then sculpted by hand into continuous solid wall structures.

Question 3

What does 'thermal mass' refer to in the context of natural building?

Accepted Answer

A material's ability to absorb, store, and slowly release heat

Answer

Thermal mass refers to the ability of a dense material (such as stone, earth, or concrete) to absorb heat during the day and slowly release it at night, moderating indoor temperature swings.

Question 4

Which climate type is cob construction BEST suited for?

Accepted Answer

Temperate climates with low to moderate rainfall

Answer

Cob performs best in temperate, relatively dry climates because it is susceptible to erosion from heavy rain and can absorb damaging moisture in very humid conditions.

Question 5

What does the R-value measure in building construction?

Accepted Answer

The thermal resistance or insulating ability of a material

Answer

R-value measures the thermal resistance of a material — the higher the R-value, the better the material resists heat flow and performs as insulation.

(PDC) Permaculture Design Certification Practice Test

(PDC) Permaculture Design Certification Practice Test

PDC Natural Building & Shelter Design