Drawings Used in the Construction Process

Site Plans † used to locate site, buildings, define site levels, indicate services to buildings, identify parts of site such as roads, footpaths and boundaries and to give setting out dimensions for the site and buildings as a whole. Suitable scale not less than 1 : 2500 Floor Plans † used to identify and set out parts of the building such as rooms, corridors, doors, windows, etc.,

Suitable scale not less than 1 : 100 Elevations † used to show external appearance of all faces and to identify doors and windows. Suitable scale not less than 1 : 100 Sections † used to provide vertical views through the building to show method of construction. Suitable scale not less than 1 : 50 Component Drawings ~ used to identify and supply data for components to be supplied by a manufacturer or for components not completely covered by assembly drawings

Suitable scale range 1 : 100 to 1 : 1 Assembly Drawings ~ used to show how items fit together or are assembled to form elements. Suitable scale range 1 : 20 to 1 : 5 All drawings should be fully annotated, fully dimensioned and cross referenced. Ref. BS EN ISO 7519: Technical drawings. Construction drawings. General principles of presentation for general arrangement and assembly drawings.

Sketch ~ this can be defined as a draft or rough outline of an idea, it can be a means of depicting a three-dimensional form in a two-dimensional guise. Sketches can be produced free-hand or using rules and set squares to give basic guide lines.

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All sketches should be clear, show all the necessary detail and above all be in the correct proportions. Sketches can be drawn by observing a solid object or they can be produced from conventional orthographic views but in all cases can usually be successfully drawn by starting with an outline `box’ format giving length, width and height proportions and then building up the sketch within the outline box.

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