[ENG] Construction 104: Stone walls (part 4) and relieving arches

15/10/18 | ۩ |

All the walls have reached the level of the mezzanine floor, so now I can fill them with cement and gravel, covering the vault of the service room.



The perimeter of the main entrance has also grown since the last filling, and the result is a high empty gap.
I use a small palette knife (the one I always use to apply glue) to reach every corner inside the hole . Some recesses are almost unreachable and if I had delayed a little more to fill the wall, pouring concrete all over the surface would had been impossible.


Regarding the vault, I only fill the corners without reaching the floor level. The base over which I'll lay the tiles will be made with cement only in order to get a smoother surface.



The filling of the perimetral wall over the stone corbels is essential to go on with the construction of the mezzanine floor. Where the room widens due to the space added by the arch structure, the floor lay partially over the wall of the ground floor, gaining some centimeters (millimeters, in scale), very useful for the movement of the hoist.


But we'll see that another time. Now move with me towards the front wall of the warehouse, where I'm going to lay two segmental arches (acting as relieving arches) over the doors.

To build the doors I took inspiration from the front wall of a shop in the Sottoripa alley in Genoa.
You can see the lintels and the stone arches in the picture I took there. I just erased some ugly details with Photoshop (the loud orange sign of a financial institution) that say a great deal about the care and the taste with which those historical buildings are preserved...

To build the arches I can use a print at a real size of my original project. I work separately on each voussoir, cutting and polishing the stones and laying them over the sheet until the arch is complete, then I join all the pieces and let dry.



The day after, when the glue has dried, I keep working on both arches, polishing the whole surface with sandpaper.
I can verify the size directly on the finished doors, then I cut and lay the stones to fill the intrados, giving them the same shape of the arches and the same thickness of the lintel.



That's important, because the doorways are covered with segmental arches that exceed in height the lintels, leaving  on sight part of the outer wall.
Tricky? Perhaps. But trying again and again (and throwing away some failed piece) I succeed and the wall can finally resume its way to the top...




MATERIALS:
slate, vinyl glue, cement and gravel
TOOLS:
palette knife, sandpaper, tweezers, pincers, hacksaw, clamp
SIZE (in cm):
width: 4,6
height: (extrados: 1,4; intrados: 0,8)
thickness: 0,5


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