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Four columns under a Joglo roof.

How do four saka guru support a Joglo’s tall central roof?

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Four columns under a Joglo roof.

How do four saka guru support a Joglo’s tall central roof?

Setting up the mechanism…

Least column reaction: -1.50kN
Greatest column reaction: 31.50kN

More

Total carried load: 60.00kN

Fit the components before testing.

How do four saka guru support a Joglo’s tall central roof?

Four principal timber columns carry the central roof through the beam-and-joinery frame. Moving the illustrative roof load away from the center redistributes its reactions; a balanced load keeps all four reactions compressive.

R_ij = W(1+i e_x/2)(1+j e_y/2)/4

What this model simplifies

Ideal Yogyakarta Joglo pavilion type, not a measured particular house. 4×4 m principal-column square and rigid bilinear load sharing. Illustrative capacity only; not structural design or code verification.

Read the source · budaya.jogjaprov.go.id ↗

Inspired by Nur Asyrof’s community build ↗

Put it to work.

Keep all four columns compressed and each reaction below 20 kN.

Make it work.

Keep the roof load balanced over four columns.

Run

Fine adjustments 3

Central roof loadkN

Load eccentricity eastm

Load eccentricity northm