Walls were either 1 or 1.5 bricks thick (i.e. Then the walls were built in brick (Amsterdam bricks were 18/19 x 9 x 4.3 cm), using lime mortar. 5 to 6 layers of bricks were laid on top with a tough mortar of sand, and lime, with the purpose of blocking rising damp. On top of these beams, several layers of stone were built with loam (in Dutch ‘leem’). Heavy foundation beams were nailed on top of the poles, which were first cut at the same level. The water levels in the city have therefore always been carefully maintained. The poles have to be kept under water to maintain an anaerobic environment and avoid rotting. The poles were placed in pairs, next to each other, with a distance of 80 cm between the pairs. Long wooden beams, basically entire trees of 13 to 20 meters long, were drilled into the soil to reach the firmer sediment layer of sand. Since Amsterdam is located on a bog, houses are built on a typical foundation of wooden poles. View into the small inner court at the back of the building.
0 kommentar(er)
