Ancient Knowledge Tour

Ancient Knowledge Tour of Roof Framing Geometry

Sim Ayers & Billy Dillon

Saturday Oct. 17
San Francisco, California

The class has been moved to BuildZoom's office in  San Francisco

501 Folsom St, San Francisco, CA 94105,

8:00am to 5:00pm

Registration cost is $100.00

Sponsored by BuildZoom BuildZoom

Co-Sponsors

Simpson Strong Tie

JLC Magazine -- The Journal of Light Construction -- Hanley Wood Company

WindsorOne -- Protected Trim

This will be a hands on workshop/class on advanced roof framing. 

Cut complex roofs like the master carpenters of Europe.

Tools required for the class:

12”compass 

2-45º drafting triangles

1-30º - 60° drafting triangle

straight edge

scissors

framing square (no rafter tables needed)

drafting protractor

drafting pencils

colored drawing pencils

eraser

Japanese Pull Saw (handsaw)

Optional Tools for the class, if time allows for Hip Rafter Edge Bevel:

Draw Knife

Hand Plane

Topics covered in the workshop:

Roof Framing Kernel , with fold out and fold down roof surface planes

Rule of Thales, converting degrees to radians i.e. 57.3

Eyebrow Dormers, Groin Vaults, Curved Hip Rafters  using ordinates

Scribing timbers using a French plumb bob

Transfer angles and lines to the stick (timber), grasshopper method.
DoppleShifter

Ad Quadratum -- Octagonal Roof Framing

Plumb To the Earth

Trait Car -- Perpendicular

Ad Triangulum

Hexagonal Roof Framing

Layover Valley Rafter

Curved Rafters

Schiftungen

Dachausmittlung

'L'Art du Trait'

Roof Framing 

Geometry

Schräge Sparren 

Canted Rafters

French Devers de pas drawing technique

German Shadow Line drawing technique

Treteaux Angles

Rotated Hip Rafters

Roof Axis Plane

Pentagonal Roof Framing

Backenschmiege

Abgratungswinkel

Hip Rafter

Backing Angle

Edge Bevel

Basic Shift

Klauenschifter

Rafter Claw -- Barbe Angles

Eyebrow Dormers

Hexenschnitt

The Witches Cut

Square Tail Fascia Angles

Besides the roof framing geometry, if time allows, for Simpson Strong Tie --- We'll show you how to install HDU hold downs correctly and how to nail plywood shear wall plywood correctly, when the On Center spacing is 2" O.C.