No labour costs were incurred.

Design and Structure Reception Building | Apart from the actual reception area itself (about 30 m2) there was to be a small kitchen, a toilet and a small common room on the upper floor. Ekler decided on the shape of a symmetrical "fowl" which appears to crouch in the landscape with open eyes. The whole building


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5 I Longitudinal section, scale 1:150.


6 | Section, scale 1:150. Here, in the widest, central part of the building, the external walls provide intermediate supports for the ties carrying the upper floor.

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7 I Common room at upper floor level showing exposed roof construction.

8 I The lookout tower seen from the reception building.

appears to be just a roof made from irregular bands of long planks which rise along the centre axis to form the various clerestory windows.

Structurally, the building consists of a loadbearing 120 x 150 mm ridge purlin which is supported by one central post 400 mm in diameter and two 300-cm-diameter posts spaced at 4.50 m from the central post. The ridge purlin is cranked over the central post and at the upper floor level with notched joints and so forms the organic, rounded shape of the building. The ridge purlin supports 75 x 150 mm rafters at 1 m centres which themselves are also cranked. Each is held in place by two 50 x 150 mm ties or by trimmers at the entrance opening or on the fireplace side. The ties support the upper floor made from 45 mm planking. In the centre of the building the ties are carried on two 120 x 200 mm beams which are fastened on both sides of the three posts, and at one end are also attached to the ridge purlin. At the other end, these centre beams are cut back to accommodate the stairs which wind around the 300 cm post at this end. As the ridge purlin is not supported by the centre beams at this end, a vertical 120 x 120 mm post is provided to carry the purlin. The roof rises locally to accommodate dormer windows; this is achieved by means of 50 x 150 mm auxiliary purlins arranged like firring pieces on the ridge purlin, and additional angled rafters. This forms the basic skeleton for the organic overall shape.

The roof surface over the rafters is constructed as follows: 25 mm timber boarding forming a flat base on which a polyethylene vapour barrier is laid, 50 x 120 mm members with 100 mm thermal insulation laid in between, then 25 x 50 mm battens and the lapped weatherboarding consisting of 25 mm planks impregnated to protect them against rot and fire.

All loadbearing posts are made from robinia, which possesses greater strength. The other members - purlins, ties, boarding, battens, etc. - are made from pine.

Design and Structure Lookout Tower | The tower is actually only a double spiral of two stairs which are carried by rings of timber posts (again robinia) leaning outwards. The observation platform is at a height of about 9 m.This design, opening up towards the sky, exhibits an unconventional floral dynamic. And the high central post with its branches at the top is reminiscent of an old totem pole. Not a "hands-on" but rather a "walk-on" work of art with mythical associations!

The central "pole" has a diameter of 300-400 mm and is approx. 18 m high. It consists of two parts spliced together at a height of +7.20 to +8.80 m above the foundation to form one single member. The stairs rise in a spiral between the auxiliary posts (dia. approx. 250 mm) leaning outwards, approaching closer to the central pole as they rise, reaching the approx. 2.60-m-diameter platform at a height of about 9 m. At the bottom all posts are cast into a 1000-mm-deep concrete foundation. To prevent rotting of the posts at this problematic interface, the top surfaces of the foundation slope outwards. In addition, where they are in contact with the ground the posts are given several coats of bitumen and, where in contact with concrete (at the fixed base), they are charred and then briefly sprayed with water prior to being cast in. The ground above the foundation around the posts is also provided with an outward fall.

The two stairs rise offset by 180°, i.e. exactly opposite, and at the same pitch. This enables an extremely simple construction. Each opposing pair of posts is joined by two 140 x 200 mm ties connected together and to the central pole. These pairs of ties rise in a spiral matching the stairs, thus forming the supports for the stringers. These stringers are not conventional inclined members but instead, short 80 x 200 mm pieces placed horizontally and bolted together. The front offsets determine the pitch of the stair and the oak treads are fixed here.

9 | The timber framework during construction: View looking along the centre axis.

10 | The double ties carrying the upper floor with main beams and loadbearing posts.

11 | The raised roof sections for the windows above the central purlin.

12 | Fixing the roof covering.

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