Suka2

Still haven't developed the jack rafter perpendicular to the roof surface, but these drawings are a start in the right direction. They develop the sloping dormer profile slope angle. Keywords to search with in German Schifter und Wechsel, im rechten Winkel zur Dachfläche. gauben profil kehlbohenschifter Ground Plan for the Kehlbohenschifter (Valley Jack Rafter) Ground Plan, Elevation and GaubenProfil (Dormer Profile) for the Kehlbohenschifter  Another way of developing the sloping ridge dormer profile slope angle. The sloping ridge is technically a hip rafter, so we can develop the dihedral angle triangle, the angle between the two planes. This gives us the sloping ridge backing angle.

Tony McGartland sent me the 2011 London Dormer file several months ago asking me if I give the geometric construction lines of the sloping ridge dormer a go.  All of the WorldSkills Carpentry competitions have two things in common. A polygonal ground plan and a sloping ridge dormer. The polygonal ground plan isn't all that hard to construct, but the sloping ridge dormer is a tough one to get a handle on. Mainly the jack rafter perpendicular to the roof surface and skewed from the plate line. Here I developed the ground plan, profile and elevation to develop the valley sleeper. This drawing shows the relationship of the valley sleeper bevel to the ridge line. This drawing is just a reference drawing. It has nothing to do with the dormer. I needed to make sure the valley sleeper bevel was the same geometric construction with any type of ground plan. I placed the valley sleeper material over the develop drawing and scribed the lines to construct the 3D model of the valley sleeper. Nex

This example of Dachausmittlung, Geometric Roof Design, was too see if I could could up with any theories on the geometric roof design construction lines for the sloping/raking eave lines. The roof ground plan is square, 10.00, with equal pitched roof slopes, 40°, and with the sloping/raking eave rising 1.5. Ground Plan. First develop the sloping/raking construction lines that define the direction of the averaging/hip rafter intersecting lines. In Manfred Euchner's book he uses lines that are tangent to a circle using the rise of the sloping/raking eave line, but I think it's easier to use a framing square, with the 1.5cm on the one corner and swing the framing square until it intersects with the other corner. Framing Square intersecting at corner of ground plan with the sloping/raking eave rise to establish the averaging/hip rafter intersecting lines. Draw the averaging/hip rafter intersecting lines and draw the hip rafter run lines through the intersecting lines. Draw the con

Roof  shapes differ greatly from region to region. The main factors which influence the shape of roofs are the climate and the materials available for roof structure and the outer covering. Roof terminology is also not rigidly defined. Usages vary slightly from region to region, or from one builder or architect to another. Roof shapes vary from almost flat to steeply pitched. They can be arched or domed; a single flat sheet or a complex arrangement of slopes, gables and hips; or truncated (terraced, cut)[1] to minimize the overall height. Contents 1 Roof shapes 2 Illustrations of common and simple roof shapes 3 Selection criteria 4 See also 5 References Roof shapes Flat: These are found in traditional buildings in regions with a low precipitation. Modern materials which are highly impermeable to water make possible the very large low-pitch roofs found on large commercial buildings. Although called flat they are generally gently pitched. Roof terrace (including roof garden): the s

This example of Dachausmittlung, Geometric Roof Design, is rather complex geometrically and is extremely complex if we were using trigonometry. After I drew out the geometric roof design I checked the plan angles with my RafterTools apps and to my dismay my RafterTools apps were not able to calculate the plan angles for the eave angles when the eave lines are sloping. 3D View of the Roof Design Wire Frame sketch of the Roof Design with raking/sloping eave lines. Ground Plan of Roof Design. Two different roof pitches with two eave lines raking/sloping. In this drawing I've labeled the eave angles that my RafterTools apps could not calculate the plan angles for. Drawing showing the geometric construction of the roof design with some of the construction lines removed for clarity.  Steps for drawing the geometric roof design. This is one of those roofs where the hip rafters can only be calculated from the geometric design of the roof. I'm not sure if there are any American CAD prog