Michael, The animated graphics associated with the layout of various typical arch forms is most useful and a great reference source. Often, particularly in stonemasonry, one is required to produce an arch with a set number of voussoirs plus a keystone. Use of dividers set at at an initial approximation to the voussoir width and then stepped off around the intrados of the arch and then adjusting the setting accordingly dependent on whether one under or overshoots the perimeter of the arch has been a method taught to us. This trial and error stepping. off approach has numerous other applications in elementary setting out and more than often superior to making actual measurements which can often lead to inaccuracies. Thank you once again for original content and clear 3D graphic production!
Hi Michael fello Irish man here living in Australia, we do old school restoration, I have a possible church restoration coming up with lots of gothic arches, your videos are extremely helpful, thanks a lot !
Hi Bill, the springing line in the case of a doorway would be where the vertical reveal line from the floor level ends..and the arch curve then starts,,,,this is in line with the Gothic span line. This distance from the the floor line would usually be a given on the architects plans. Some times the overall height from the floor level to the top of the the gothic arch is given....in that case you would have to subract the Gothic rise distance from your overall distance to get the distance to the springing line from the floor level.
I cannot believe what I am seeing before me! Michael, thank-you! There is so much in the world that is unknown to many people! Why has building beautiful archways seemed to disappear? Do you have a school?
Glad you liked it..hopefully there will be more of these archs going foreward as the instruction to setting them out, in an animated format, is accessable on line ...i instruct apprentice Carpenters and Joiners in a training center in the west of ireland.
Hi Michael, can you please make a video on how to do the indian multifoil arch geometrically. I can do it freehand and with guesswork... but how can we establish it geometrically so that if someone gives me a certain passage or entrance to put an indian multifoil arch in, I can go in with geometrical rules and do it just as you have presented here with these videos.
I would love to do a video on a multifoil when i get a chance.....in the mean time, if you pause at 10.27min into video and visualise and arc whose center is where the larger pink arcs intersect, and radius is where blck broken line intersect pink arc.Then the next radius center is where the yellow broken line intersects the pink arc, and its radius streched to where black broken line intersects pink arc. Continue same process down to base line. You may want to reduce each small radius to aviod a feather edge between arcs. I know there are alot of variations of this type of archway....if you send me a link to an image of the type you are referring to i could see what i can do. hope this is some use...
