LAYING COBBLES, TRADITIONAL ARC PATTERN, NATURAL CUBE STONES, CARPET TECHNIQUE, GRITSTONE SETTS PRO
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Hi this is Carl the landscape guy. The oldest way of paving is with natural stone pavers. On my construction site, we are currently laying traditional segmental arches made of porphyry. I hope you enjoy this video as I show and explain the exact method on how to lay them. Before starting to lay any stones, we have to make sure the base layer is all set, just like under any paved area. We have prepared a 30cm thick base layer of 0/32 mm mineral gravel. The edging is made of porphyry cobblestones which are set into concrete with a concrete back support. On the base layer, the natural stone can be laid directly in a bedding of crushed sand. We use crushed sand 0 to 5 mm. The reddish brown porphyry is a volcanic rock and is mined from quarries mainly in Italy. The segmental arch used here is a traditional natural stone laying pattern and it can be used on small paths, public squares or even on roads. Here, we’re redesigning the city park in Herborn, Germany and we are using small pavers sized 9-11 cm. The main challenge for the worker is setting the segmental arches, which requires an experienced eye to choose the right stone. The main principle of the segmental arch is the merging of several arced sections. In contrast to the scale arch, the rows of stones are not laid separately, but with the two segmental arches sharing an endstone. First, the field width is determined. Following the rule of thumb, that the stitch height results from ⅕ the field width + 1 cm. Depending on the stone size, recommended dimensions for field width and stitch height vary. The laying of the stones is carried out from the middle of the arch towards the outside edge. The stone width increases from the inside to the outside. Using trapezoidal stones helps to form even grouts. The bows should always hit the edging at a 90° angle. In the middle of the field width the direction should be checked regularly with the string parallel to the edging. The sand bed isn’t compacted too much prior to laying, because the pavers are set with a special paving hammer by hand. The joint spacing for small pavers like these should be 6 to 10 mm. Each stone is set about ⅓ into the sand. If one section is finished, the grouts should be filled up to least ⅔ with sand. Due to the coarse surface of the natural stones, we are setting the stones at a higher slope than for smooth concrete block surfaces, to have rainwater flow off the surface. Our transverse slope is at least 3%. When calculating the final pavement height, keep in mind that the surface will still be compacted. So we set the stones about 2 cm higher than the edging and existing areas. In the middle of the small city park, the architect has planned a traditional wind rose. It’s made from basalt stones with the same stone size as the porphyry. The small square was built from the outside edge with the porphyry in circles. Then the workers created the 6 m wide wind rose, without cutting any stones, only with the use of their hammers. The dark basalt color forms a nice contrast and looks very good, especially from a bird's eye view. So now I hope this video was informative and helpful. It is created with the kind support of Balzer Landscape Incorporation, as well as Rizzonelli Natural Stone Works. You will find more information in the video description. Please also visit our channel, there are many videos on landscaping projects. Please support us by liking, subscribing and sharing. Thanks for watching and for your support, see you next time, I’m Carl the Landscape Guy.
#cobbles #paving #construction
Видео LAYING COBBLES, TRADITIONAL ARC PATTERN, NATURAL CUBE STONES, CARPET TECHNIQUE, GRITSTONE SETTS PRO канала CarlTheLandscapeGuy
Hi this is Carl the landscape guy. The oldest way of paving is with natural stone pavers. On my construction site, we are currently laying traditional segmental arches made of porphyry. I hope you enjoy this video as I show and explain the exact method on how to lay them. Before starting to lay any stones, we have to make sure the base layer is all set, just like under any paved area. We have prepared a 30cm thick base layer of 0/32 mm mineral gravel. The edging is made of porphyry cobblestones which are set into concrete with a concrete back support. On the base layer, the natural stone can be laid directly in a bedding of crushed sand. We use crushed sand 0 to 5 mm. The reddish brown porphyry is a volcanic rock and is mined from quarries mainly in Italy. The segmental arch used here is a traditional natural stone laying pattern and it can be used on small paths, public squares or even on roads. Here, we’re redesigning the city park in Herborn, Germany and we are using small pavers sized 9-11 cm. The main challenge for the worker is setting the segmental arches, which requires an experienced eye to choose the right stone. The main principle of the segmental arch is the merging of several arced sections. In contrast to the scale arch, the rows of stones are not laid separately, but with the two segmental arches sharing an endstone. First, the field width is determined. Following the rule of thumb, that the stitch height results from ⅕ the field width + 1 cm. Depending on the stone size, recommended dimensions for field width and stitch height vary. The laying of the stones is carried out from the middle of the arch towards the outside edge. The stone width increases from the inside to the outside. Using trapezoidal stones helps to form even grouts. The bows should always hit the edging at a 90° angle. In the middle of the field width the direction should be checked regularly with the string parallel to the edging. The sand bed isn’t compacted too much prior to laying, because the pavers are set with a special paving hammer by hand. The joint spacing for small pavers like these should be 6 to 10 mm. Each stone is set about ⅓ into the sand. If one section is finished, the grouts should be filled up to least ⅔ with sand. Due to the coarse surface of the natural stones, we are setting the stones at a higher slope than for smooth concrete block surfaces, to have rainwater flow off the surface. Our transverse slope is at least 3%. When calculating the final pavement height, keep in mind that the surface will still be compacted. So we set the stones about 2 cm higher than the edging and existing areas. In the middle of the small city park, the architect has planned a traditional wind rose. It’s made from basalt stones with the same stone size as the porphyry. The small square was built from the outside edge with the porphyry in circles. Then the workers created the 6 m wide wind rose, without cutting any stones, only with the use of their hammers. The dark basalt color forms a nice contrast and looks very good, especially from a bird's eye view. So now I hope this video was informative and helpful. It is created with the kind support of Balzer Landscape Incorporation, as well as Rizzonelli Natural Stone Works. You will find more information in the video description. Please also visit our channel, there are many videos on landscaping projects. Please support us by liking, subscribing and sharing. Thanks for watching and for your support, see you next time, I’m Carl the Landscape Guy.
#cobbles #paving #construction
Видео LAYING COBBLES, TRADITIONAL ARC PATTERN, NATURAL CUBE STONES, CARPET TECHNIQUE, GRITSTONE SETTS PRO канала CarlTheLandscapeGuy
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