How to Build a Clay Igloo (/How to Present Igloo Mathematically
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- Labeling of the Layers:
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Blocks are labeled as follows. The Number of Blocks decreases as the igloo reaches the rooftop
- What To Do:
- How To Find Angles of the Trapezoidal Block:
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b = Distance Between the center to the layer, H = Triangle's Height, Theta = Angle of that block
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Green = Hypotenuse of the Triangle, Pink = Height of the Triangle
- 1) Measure the distance formed between the center of the igloo to the edge of the layer (b)
- 2) Measure the Height that forms perpendicular with Base (h)
- 3) Solve the angle of the that specific angle of the ramp (theta)
- Arctangent( Height / Base) = angle of the trapezoidal block (in degrees)
- Determining the Dimensions of the Block (Circular Layer):
- 1) Measure the Radius of specific layer
- 2) Calculate its Circumference ( C = 2 x pi x radius)
- 3) Divide it by measured external length of a block
- 4) If the number of the blocks match with the calculation, then igloo's layer can be formed accurately without any shortage of materials
- Determining the Dimensions of the Block (Vertical/Height):
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H (with subscript I) = Height of the igloo, H (with subscript #) = Height of the Individual Block, x = Calculation of proportional relationship with the igloo's height and one particular block
- 1) Measure the height of the igloo as a whole
- 2) Using the proportions, calculate the 'X' for each layer's specific block
- Make sure the blocks are positioned on top of each other
- 3) Set Base Layer's block to be 13/5 of the igloo's height
- 4) Set Second and Third Layers' blocks to be 52/15 of the igloo's height
- 5) Set Fourth and Fifth Layers' blocks to be 1/7 of the igloo's height
- 6) Set Sixth Layer's blocks to be 1/8 of the igloo's height
- 7) The Roof should be height of the igloo as a whole
- Calculating the Ramp:
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Ramp formed when one layer is stretched out into one trapezoidal block
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x = Circumference of the Layer/Base Length of the Trapezoidal Ramp, y = Height of the Ramp from Dashed Lines to its peak, theta = Angle of the Ramp
- 1) The length should be the circumference of the layer's circle(X)
- 2) Measure the Height that forms perpendicular with the dashed lines (Y)
- 3) Solve the angle of the that specific angle of the ramp (theta)
- Arctangent( Height / Base) = angle of the trapezoidal block (in degrees)
- If the Igloo is built correctly:
- The angle of the blocks in that particular layer should have an increasing trend from lowest to highest degrees
- The Base is the radius of that specific radius; in other words, it should be the constant
- Height should increase from lowest block to tallest block
What Not To Do
- Presenting the Igloo into single equation:
- y = -ax^2 + b; x = from a vertical point of view, the block number; b = height of the igloo
- Problems Regarding Single Equation:
- Inaccurate display = it doesn't necessarily show every single block in the 3-Dimensional plain
- Symmetrically, the length of the block doesn't equal to each other side's block
- Symmetrically, the height should be similar, if not the same, because of quadratic's concept. However, that's not true for the spiral igloo
- Calculating the Volume:
- Integrate 2pix(-ax^2 + b)dx [0, radius of one layer]
- This doesn't answer the question...
- Don't act smart by calculating unnecessary quantity or value if it doesn't calculate the shape of the block or the ramp of an igloo
- Integrate 2pix(-ax^2 + b)dx [0, radius of one layer]