- Functional design
- A quality structure
- Custom made kit
- A montage without particular difficulty
- Traditional blanket
- The pontoon and its railing
- Foundations: Solid!
- Mount foundation studs
- The puzzle assembly
- Assemble the frame
- Anchor the building
- A heavy structure
- Brace the wood
- Insert links and links
- Stand firm!
- Straighten the farms
- Railing and smooth, neat details
- Traditional pegged assembly
- Decorate the ridge
- Nail the rafters
- Install the pontoon
- Dress up façade and gable of the building
- Cement finishes
Sologne... eleven thousand five hundred hectares of water and three thousand two hundred ponds. In other words, boats are not rare, and they justify specific constructions and quality!
The shelter is a kind of wooden frame mini-shed installed above water at the edge of a pond. Its footprint is 4.90 x 5.00 m, an area of almost 25 m2 (obtaining a building permit was therefore necessary). Its interior width is 4.00 m, of which 2.90 m for the two boats. The remaining width is occupied by a pontoon, 10 m long, which starts from the bank to cross right through the building, and extends 1 m beyond. Access to the boats is thus done on dry feet! The pontoon is bordered by a guardrail turning at right angles in line with the pond.
The foundations are concrete blocks poured into the bank. Three rectangular studs, arranged transversely, also carry the pontoon. Opposite the pontoon, there are only two studs, simple columns of square section placed in the corners.
A quality structure
Made of pre-treated oak, in an "aged" finish, the building's frame fits perfectly into its environment. It has two wooden sections constituting the lower structure, two perpendicular farms connecting the ends of the panels, themselves connected by the purlins supporting the cover. The assemblies are made by pins and mortises pegged.
The pan located on the pontoon side consists of three posts each resting on a concrete pad, and connected at their top by a sand pit. On the opposite side, the structure is similar, but the central post rests on a low crossbar connecting the two concrete pads arranged under the end posts. On both sides, the connections of the poles and the sand pit are reinforced by 45° links. The pontoon railing, consisting of three horizontal rails, is integrated between the posts.
Joining the extremities of the sides, the two farms are also of traditional invoice: one entered (horizontal), a punch (vertical), two crossbowers at 45° and two struts connecting the middle of the rafters to the base of the punch. The ridge tip connects the top of the two punches. Sandpit failures are those at the top of the timber sections. Intermediate breakdowns, at mid-height of the rafters are supported by chantignoles (wooden wedges pegged on the rafters).
Custom made kit
To build the foundations, the pond level has been temporarily lowered. The pouring of the concrete was done by the owners, after digging a search and setting up a formwork. The minitractor, usually reserved for mowing the meadow, has here found a role of composition much appreciated to convey the concrete from the concrete mixer.
Manufactured in the factory, the frame is delivered ready to assemble. An operation for which at least three people are needed, see more if possible; family and friends were put to work. The plan is provided and the parts numbered. The panels are assembled on the ground and their assemblies immediately pegged (without screeching the ankles!). In the absence of lifting means, the trusses can not be assembled in advance: they would be too heavy to be hoisted in one piece.
During the installation, a network of bastaings and scaffold planks was established on the concrete pads. It was thus possible to work and circulate at a good height and dry, without having to put on the thigh boots! For a few months have passed between the pouring of the studs and the assembly of the frame; the water had time to rise, immersing the base of the foundations. Since the working height is low, no special protection has been installed. The risk of drowning remained low given the depth of water and the number of people on the site.
A montage without particular difficulty
On the assembly side itself, the approach is traditional... The two already assembled sections are presented in place and hoisted vertically. They are immediately temporarily supported with long metal poles stretched towards the bank, and clamped to the sandpits with clamps. The base of the panels is sealed in the concrete pads by steel rods. The two links are then hoisted, equipped with their links, to connect the pieces, and immediately pegged to the sandpits. Temporary struts can then be deposited.
Bastaings are arranged from one sand pit to another to allow the assembly and setting up of farms. Punch, crossbows and struts are thus assembled flat and pegged, then the whole is straightened to insert the tenons of the crossbowmen and the punch in the mortises of the entered. The operation is then repeated for the opposite farm. It remains to hoist the ridge tip at the top of the punches and put the tags to install the intermediate breakdowns. The team can blow, the hard part is done.
If the frame is oak, the rafters are single fir treated. Regularly spaced 40 cm and nailed on the purlins, they complement each other with an oak staircase.
Note that the vault is not essential: the battens would be enough to carry the tiles. But it offers a much more aesthetic underside. Hence the choice of a noble essence, treated with a white stain to reveal the grain of the wood while brightening it. The interior of the shelter thus benefits from a greater brightness.
Spaced according to the tile's purse, battens are then nailed to the roof. The flat tile roof is in keeping with the spirit of the region. The ridge (in round tiles) and the banks are sealed with mortar. If it has not been deemed useful to install gutters, a nice wind vane in cut sheet adorns the top of the building.
The pontoon and its railing
The decking of the pontoon is placed on joists in "tatajuba", exotic wood of class IV. It protrudes on either side of the building, overhanging 1 m above the pond, and in advance of 4.50 m side bank where it joins the surrounding meadow. That is a total length of 10 m. The three beams that support it are in two parts, connected at the edge of the shelter. The decking is made of deck boards (ipé), arranged transversely, pre-drilled and fixed with stainless steel screws.
The railing extends on either side of the building, requiring the addition of two additional posts at each end in addition to those of the shelter. These posts are bolted to the edge of the support beams. On the pond side, the guardrail forms a 90° return at the end of the pontoon; a pole is therefore arranged at each angle. Side bank, the two additional posts are aligned in the axis of those of the shelter. The three rows of slats, whose ends are tenoned, are inserted in mortises machined in the posts.
The pond side gable and, opposite the pontoon, the west wall section (the most exposed to the weather), are closed. The cladding, made of oak stained Douglas fir, is delivered assembled, ready to be nailed in grooves machined in the frame.
Winter concrete, iron concrete, it is said... Judging by the condition of the birch foliage, the quality of the foundations of the shelter is assured! The mini-tractor is a favorite auxiliary for casting.
Mount foundation studs
The five studs of the foundations: three long on one side and two short on the other side. A reservation made in the concrete of those of the four corners will allow the anchoring of the frame.
The puzzle assembly
Delivered in a small truck, the frame is presented as a construction game. What to find childhood pleasures... weight training exercises in addition!
Assemble the frame
The sections of the lower frame are assembled on the ground. Easy: just follow the instructions. Just to be imaginative by carefully observing the different pieces.
Anchor the building
To anchor the building, a metal rod is threaded into a 10 cm hole at the foot of each corner post; its other end is sealed with mortar in the reservation of the studs.
A heavy structure
Given the density of the oak, pre-assembled wooden sections represent a good mass to raise. The more pairs of arms available, the less body aches at the end of the day.
Brace the wood
The vertical wooden sections are supported. An imperative operation not only to secure the site, but also to stabilize the posts during the setting of the mortar.
Insert links and links
Despite the struts, it is still necessary to slightly remove the sides to insert the ties and their links, whose tenons must be nested in the mortises of the poles and sandpits.
There is no question of assembling the farms on the ground and then hoist them without crane or hoist: it would be too heavy. Bastaings placed on the sandpits serve as a construction site.
Straighten the farms
To straighten the farms and engage their tenons in the interstices, it is necessary to play biceps again. But this time we are two meters above the water, and no swimsuit!
Railing and smooth, neat details
Very simple, the railing is composed of three rows of smooth oak. Placed in the posts, the rails under the shelter must be put in place during assembly of the panels.
Traditional pegged assembly
An oak frame deserves a beautiful traditional pegged assembly. The cladding panels are inserted into a real rabbet machined in the mass, visible in the background on the punch.
Decorate the ridge
Delicate little touch of approval, the end of the ridge is adorned with a wind vane cut sheet metal. The boats may not have a sail, knowing the direction of the wind is always useful!
Nail the rafters
The rafters are nailed to breakdowns at the end of the frame work. They are one of the few elements of the shelter in coniferous and not in oak, with the battens and the panels of dressing.
Install the pontoon
The lack of availability of the roofers does not prevent the installation of the pontoon. Who takes service immediately, even before the end of the construction of the shelter. Why deprive yourself of comfort?
Dress up façade and gable of the building
The west facade and the south gable of the building are clad in Douglas fir, stained in dark oak. The underside of the volige, oak, is on the contrary thinned with a white stain.
If the construction is wood, it is the cement that loops the loop: essential to concrete foundations, it is again required in the sealing mortar of the roof tiles and banks.