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Advice and Best Practice on how to build a tall, stable bird-catching tower as commissioned by
The Grand Council of Bird Island

This is a Knowledge Asset on how to build tall stable towers as required by the Bird Island Council.  It represents compiled knowledge, good practice, tips and hints from over a decade of experience with the Knoco Bird Island exercise.

About the Exercise

The exercise is to build a tower out of Jenga™ bricks, poster paper, rubber bands, skewers and a doll.  It must be built as high as possible and must also remain intact while undergoing two tests: 

    • a Hurricane (a blast from a hairdryer)

    • an Earthquake (dropping a Yellow Pages directory near it).

Tower heights to date (2nd build)

height of second tower build
Record height = 345 cm
Mode = 290
Mean = 272
You need to beat 232 to be in the game!

Some high-level learnings from previous exercises.
Build for height not strength “The tests didn’t really prove much of a constraint”
“Basically, if it stands up, it will pass the tests”
Ask to do pre-testing for yourselves, to see how stringent the tests are. “We could have got much higher the first time around if we’d realized how pathetic the tests were”
Best Practice tower design
best practice tower design
Invisible net right at the top Spare bits of paper on top of sticks Bendiman, on top of the paper, extends his reach with sticks Paper torn in 2 and rolled Special joining module Bricks on their side, 2 to a course Tower built on firm foundation
Risk Management
Project Management


Supplied under license. Strict copyright Knoco Ltd.