ReciproBoo: the shelter concept and design

The reciprocal frame concept


When the 4 frame poles of the ReciproBoo roof are overlapped reciprocally they will support a considerable weight.

This roof frame is the unit used for all the shelter roofs.

- 4 reciprocally overlapping poles ABC and D
provide strength and a large span.

- A single ridge pole E and two side ropes
F and G  provide stability.

- The points where poles meet are simply cross lashed with sisal twine to form a flexible but strong joint.

The unit is now ready to be used for shelter construction or repairing an existing roof.








The length of the reciprocal frame poles ABCD determines the size of the shelter and the tarpaulin required.

If poles ABC and D = 3 metres,
and the ridge pole E = 4 metres
then the frame is suitable for a standard 6m x 4m relief tarpaulin.

This frame is designed so it can easily be cut down to accommodate smaller plastic sheets as required.


Taking this roof frame and elevating it with two poles completes the emergency shelter frame.

Support poles 2.5 metres in length are suitable for standard 6m x 4m relief tarpaulins.

Note how the support poles fit inside the frame so they can take the tension from two lateral guy ropes.

The proportions of the frame in the design produce an inclination of approximately 30 degrees to the ground. In practice this functions well to support the required loads

The base of the roof frame is anchored to the ground at points X and X using strong pegs made from bamboo.

The side ropes can also be attached to these pegs, but attaching to separate pegs allow easy adjustment.


The frame is designed to make tarpaulin attachment easy.

If a second tarpaulin is available it can be cut in half to make two end walls for the shelter

Key design features of the bamboo shelter

You are viewing the text version of this site.

To view the full version please install the Adobe Flash Player and ensure your web browser has JavaScript enabled.

Need help? check the requirements page.

Get Flash Player