Instructions
Back to Building Block Units (BBU)

See other sections of this tutorial for instructions on folding other unit variants and connecting them.

BBU Q family groups elements which represent various roof types and are useful for designing architectural models.

All tiles in the family

Code Name Finished look Front Back Crease pattern Description
Q1 45° slant with pocket
BBU Q1 tile, complete
BBU Q1 tile, front
BBU Q1 tile, back
BBU Q1 tile, Crease Pattern (CP)
This roof has a big pocket which can be used to connect other units, e.g. Q3 or Q20
Q2 45° slant
BBU Q2 tile, complete
BBU Q2 tile, front
BBU Q2 tile, back
BBU Q2 tile, Crease Pattern (CP)
Q3 45° gable
BBU Q3 tile, complete
BBU Q3 tile, front
BBU Q3 tile, back
BBU Q3 tile, Crease Pattern (CP)
Q4 90° roof top
BBU Q4 tile, complete
BBU Q4 tile, front
BBU Q4 tile, back
BBU Q4 tile, Crease Pattern (CP)
Q5 90° gable
BBU Q5 tile, complete
BBU Q5 tile, front
BBU Q5 tile, back
BBU Q5 tile, Crease Pattern (CP)
Q6
BBU Q6 tile, complete
BBU Q6 tile, front
BBU Q6 tile, back
BBU Q6 tile, Crease Pattern (CP)
This unit can be inserted under adjacent Q5 tiles in order to cover the empty spaces between them.
Q7 60° roof top
BBU Q7 tile, complete
BBU Q7 tile, front
BBU Q7 tile, back
BBU Q7 tile, Crease Pattern (CP)
Q8
BBU Q8 tile, complete
BBU Q8 tile, front
BBU Q8 tile, back
BBU Q8 tile, Crease Pattern (CP)
Needs diagonal slits (C1 or Q21) for proper attachment.
Q9 roof with arbitrary slope
BBU Q9 tile, complete
BBU Q9 tile, front
BBU Q9 tile, back
BBU Q9 tile, Crease Pattern (CP)
Q10
BBU Q10 tile, complete
BBU Q10 tile, front
BBU Q10 tile, back
BBU Q10 tile, Crease Pattern (CP)
Q11
BBU Q11 tile, complete
BBU Q11 tile, front
BBU Q11 tile, back
BBU Q11 tile, Crease Pattern (CP)
Q12
BBU Q12 tile, complete
BBU Q12 tile, front
BBU Q12 tile, back
BBU Q12 tile, Crease Pattern (CP)
Q13
BBU Q13 tile, complete
BBU Q13 tile, front
BBU Q13 tile, back
BBU Q13 tile, Crease Pattern (CP)
Q14 steep tower roof
BBU Q14 tile, complete
BBU Q14 tile, front
BBU Q14 tile, back
BBU Q14 tile, Crease Pattern (CP)
In order to match other units, this unit needs to be made from a sheet of paper which is at least 1/(2√2 - 2) ≈ 121% the size of paper used for the other units.
Q15 tower roof
BBU Q15 tile, complete
BBU Q15 tile, front
BBU Q15 tile, back
BBU Q15 tile, Crease Pattern (CP)
This seems to be the steepest four-sided roof that can be made from paper the same size as other units.
Q16 90° roof top with gables
BBU Q16 tile, complete
BBU Q16 tile, front
BBU Q16 tile, back
BBU Q16 tile, Crease Pattern (CP)
Q17 truncated 90° roof top with gable
BBU Q17 tile, complete
BBU Q17 tile, front
BBU Q17 tile, back
BBU Q17 tile, Crease Pattern (CP)
Q18 base for crane roof
BBU Q18 tile, complete
BBU Q18 tile, front
BBU Q18 tile, back
BBU Q18 tile, Crease Pattern (CP)
Base for Q19.
Q19 crane roof
BBU Q19 tile, complete
BBU Q19 tile, front
BBU Q19 tile, back
BBU Q19 tile, Crease Pattern (CP)
Uses Q18 as a base.
Q20 45° slant corner
BBU Q20 tile, complete
BBU Q20 tile, front
BBU Q20 tile, back
BBU Q20 tile, Crease Pattern (CP)
This unit can be used for connecting two perpendicular runs of 45° slanted roofs made from units such as Q1 and Q2.
Q21 45° attachment base
BBU Q21 tile, complete
BBU Q21 tile, front
BBU Q21 tile, back
BBU Q21 tile, Crease Pattern (CP)
Can be used to connect several Q20 units to each other so that they form a pyramid.
Q22 45° slant with gable Looks like a combination of Q1 and Q3.

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