Why is sciography done in the drawing

Along with light there comes the shadow. Shadows in architecture are elements that actually give a form to the light that is either entering or escaping a window.

Here, the play of shadows can be achieved by various canopy designs. Canopies with a variety of large as well as smaller voids which create a pattern of light and shadow on the entrance floor creating a welcoming feel. The corridors or the lobbies can be treated with skylights if possible or the walls of these spaces can be treated with desired number of voids with different shapes and volumes according to the light and shadow requirement.

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C Beam. Sawdust as Insulating material. This 45 degree direction of light results in shadows of widths equal to the projections from wall surfaces of vertical and horizontal shade lines.

The shadow of any plane figure on a parallel plane is identical in shape, size and orientation with the figure. Shadows of parallel lines are parallel when they fall on the same plane or parallel planes. To determine the shadow cast by a complex form:.

The overall shadow pattern will be a composite of these shadows. A shadows profile is continuous, except where interrupted by a surface in light. A shadows profile changes direction with every change in form that receives the shadow.

When the observer looks at the end of a straight line so that it is seen as a point, then the shadow cast by that line appears as a straight line, regardless of the form of the surface receiving the shadow. The shadow of any straight line on a plane surface can be located by finding the shadows of the ends of that line. Shadows of curved lines can be determined by 45 degree projections of critical points. The purpose of shades and shadows in the rendition of site plans is threefold:.

Shadows are used in plan drawings to aid our perception of the depth of the space being portrayed. The intent is not to render the actual condition of sunlight at a specific point in time.