In this mini-series were going to cover Construction Blueprints from start to finish. It indicates direction and extent of a dimension.
Multiview Drawings 89 4.
What direction are blueprint dimensions read. Blueprint symbols are the universal language of builders and contractors. Showing you guys everything you need to know along the way. The sections of blueprints are where contractors will see the cross sections of the building.
Blueprint Reading Fundamentals Blueprint Reading Fundamentals Course Outline Topic Page 1. Reading a blueprint accurately is extremely important in the machining industry. For example a dimension of a rectangular room on a blueprint 14 11 X 13 10 equates to a room size of 14 feet 11-inches wide by 13 feet 10-inches long.
Send Text Message Print Comment. For example 18 1 one eighth inch equals one foot. In our doll house example imagine if the slice was very thick and included in it a few layers of walls as well as some doorways fixtures such as bathtubs and sinks and details for a built-in cabinet.
Dimension lines should be set apart from object lines by spacing and line weight so that the chance of their being mistaken becomes minimal. Dimensions are usually drawn between the walls to specify room sizes and wall lengths. Reading metal fabrication blueprints requires knowledge of standard detailing practices.
The arrows in show the direction of view. It has all of the material part number revision date and other information about the part. Threads and Fasteners 131 6.
Alphabet of Lines 53 3. Thursday December 27 2012 The floor plan is the heart of constructional drawings. Most half size drawings do not state they are half size or other.
From the type of house to the size of the house a floor plan reveals area structure stair location door and window locations room layout and so much more. Once youve learned the language you too will be in the know. The cross section could very well be the most difficult view in learning how to read blueprints since a large amount of detail and layers can sometimes be included.
Construction plans blueprints are scaled down representations of the final project at a ratio of the actual size. If you cant decipher a print or flip your views more on that later youll have a hard time meeting the part requirementsThe first thing to look at is the job description box. Youll see parallel lines that scale at whatever width the walls are required to be.
A half-section is a view of an object showing one-half of the view in section. The dimension line is a fine dark solid line with arrowheads on each end. They show the studs insulation sheathing and how the wall will connect to the floor or the foundation.
The bill of materials traditionally located above the title block on the right side of the paper provides a list of the exact sizes and lengths of steel required to assemble the pieces drawn on this blueprint. The codes shown here are in. Basically to consider anything a half size drawing it will normally be less then a 24×18 Arch C sized sheet.
It is an orthogonal perpendicular projection. Extension lines are taken perpendicularly from the building lines out to the dimension lines. Once again here is an graphic example of a cutting plane line and the section that develops from it.
How To Read a Floor Plan. The dimensions of the cabinets countertops and more can also be found within the sections and they are important to take note of. Dimensions in blueprints represent the size of an object in two- or three-dimensional space.
Keep in mind sometimes a half size sheet is called a half size even when its plotted from a 30×44 to a 11×17 size set rendering it no longer a true half size. In addition to the standard scale grid and lines blueprints are often comprised of other symbols and numbers. Having this knowledge allows you to better track the building process along the way and can help you convey any tweaks or questions you have for your builder.
August 26 2015 Advertisement. Read the notes and legend. Place the blueprint on the table with the title block on the lower right side.
For dimensions ending in a fraction of an inch such as 18 116 132 or 164 the required accuracy will be to the nearest 164 inch. When construction plans are scaled it helps to put the part into a print size drawing that is easily read by the crew. If tolerances are not actually specified on a drawing certain assumptions can be made regarding the anticipated accuracy by applying the following principles.
Blueprints are sets of pages that communicate the different layouts and measurements of your new home so its important to understand how to read them. Figure 18 – The top outside view of the bearing. Section Views 117 5.
A floor plan layout on blueprints is basically an overhead view of the completed house. In machine sketches and drawings in which fractions and decimals are used for dimensions the dimension line is usually broken near the middle to provide open space for the dimension numerals. If youre just an operator.
In order to fully comprehend the specific blueprint youre working with be sure to learn those symbols by reading through the legend. Dimensions should be read across the sheet and are usually placed at the bottom. How to Read a Blueprint How to Read a Blueprint.
Dimensions are expressed as width by length by height or depth in three-dimensional space. Notice the direction of the arrows for the A-A cutting plane. Basic Blueprint Reading by Linn-Benton Community College is licensed under a Creative Commons Attribution 40 International License except where otherwise noted.
Vertical dimensions must be readable from the right-hand edge. The dimensions should be placed on the face that describes the feature most clearly.