One of the main functions of graphic symbols on construction drawings is to reference other drawings within the set. Thin, dotted lines indicate overhead features, such as wall cabinets in a kitchen or a special ceiling treatment or an archway in the living room.Blueprint drawings-as applied to the building- construction industry-are generally used to show how a building, object, or system is to be constructed, implemented, modified, or repaired. Thick, solid lines are used to indicate full-height walls, while thin, solid lines indicate other built-in structures, such as cabinets, bookshelves, or plumbing fixtures. Sometimes, the circle will also include an arrow on one side that points in the direction of the view depicted in the cross-section.Īnd finally, while the symbols used in blueprints are too numerous to mention, you should be familiar with the most standard. The number in the circle indicates which page the cross-section is located on, while the letter notes which cross-section on that page is being indicated. Often, a single page of the blueprints will include two or three cross-section drawings. These symbols are used to indicate a cross-section of that particular room or space that can be found elsewhere in the blueprints. When reading the floor plans, you will probably notice a few circles with numbers and letters inside of them. These schedules indicate the size and types of the doors and windows to be used, and sometimes even the manufacturer and model numbers, as well. Placed next to windows and doors - and sometimes next to other elements, such as lighting or plumbing fixtures - these notations correspond to those on the window, door, plumbing, and electrical schedules found at the back of the blueprints. You will probably also notice a number of circles, triangles, or hexagons with numbers inside of them. A cross-section, for instance, will usually include a dimension line that notes the height of the ceiling in a room.) (Some vertical measurements may also be indicated with dimension lines. The space between the two marks equals the distance noted next to the line. These measurements are indicated with dimension lines, which consist of a solid line with a mark at either end. Some measurements, such as room dimensions, will be labeled directly on the blueprints with their actual size. Each page of the drawings should be labeled to indicate what size scale the home designer used when drafting the plans. (Scale rulers are available at any crafts store and at many drugstores). The simplest method for translating scale measurements into their actual size is to measure them with a scale ruler, which will indicate the conversion directly on the ruler. Prints are drawn to scale, usually one-quarter (¼) of an inch, meaning every one-quarter of an inch on the prints equals one foot of actual size. First, floor plans - and all of the other drawings in a set of blueprints. But to understand them, you will need to decipher the numbers and symbols that provide the keys to what they say. No doubt, some of the most interesting pages for you in your blueprints will be the floor plans.
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