top of page
RESOURCE LIBRARY
All BTTB resources are free to access.


LEES IMPERIAL: Three Centred Arch Voussoir Calculator (Span and Rise measurements required)
This calcultor allows is for arches constructed with imperial bricks. Enter the span measurement, the rise measurement. the brick size (gauge), joint size preferred and the face depth of arch (half brick 108mm or one brick 228mm) to calcualte rise, and voussoir number & sizes (additional information also generated)


BTTB Three Centred Arch Voussoir Calculator (Span & Rise Measurments Required)
Enter the span and rise measurements and the face depth of arch (half brick or one brick) to calcualte rise, and voussoir number & sizes (additional information also generated)


LEES IMPERIAL: Three Centred Arch Voussoir Calculator (Span only model)
This calcultor allows is for arches constructed with imperial bricks. Enter the span measurement, the brick size (gauge), joint size preferred and the face depth of arch (half brick 108mm or one brick 228mm) to calcualte rise, and voussoir number & sizes (additional information also generated)


BTTB Three Centred Arch Voussoir Calculator (Span only model)
Enter the span measurement and the face depth of arch (half brick or one brick) to calcualte rise, and voussoir number & sizes (additional information also generated)


37. BTTB Setting out arches - striking point
Animated PowerPoint presentation to underpin tutor delivery and learner revision. Access a free copy of the presentation by clicking on the download button
bottom of page
