Interpreting Scale Drawings of House Plans
You tin download a handy pdf of this mail Agreement Scale Drawings by clicking the download push button below!
Understanding the concept of architectural scales and scale drawings
Scale drawings let us to accurately represent sites, spaces, buildings and details to a smaller or more applied size than the original.
When a drawing is described equally 'to scale', it ways that each chemical element in that drawing is in the same proportion, related to the existent or proposed matter – it is smaller or indeed larger by a detail percent.
If something is 'fatigued to calibration' nosotros expect that it has been drawn, or printed, to a mutual scale that is used as standard in the construction industry. As we gain a better understanding of scale, we tin can view a cartoon in a detail calibration and instantly recognise and sympathise the spaces, zones and proceeds a quick understanding of the existing or proposed spatial relationships.
In the real world, one meter is equal to i meter. A drawing at a scale of 1:ten means that the object is 10 times smaller than in real life scale one:1. You could also say, 1 unit in the drawing is equal to ten units in real life.
As the numbers in the scale become bigger, i.e. 1:fifty – i:200, the elements in the drawing really get smaller. This is considering in a cartoon at ane:l there is 1 unit of measurement for every 50 unit in existent life. A cartoon of one:200 is representing 200 units for every one unit – and therefore is showing the elements smaller than the i:fifty cartoon.
Information technology is worth noting that scale drawings represent the same units. So, if a drawing is at one:50 in cm, 1cm in the drawing will be equal to 50cm in real life. Similarly, if a drawing is in mm, at 1:200 – one mm unit in the cartoon will represent 200mm in real life.
The paradigm above shows an example of a cartoon set with different scales to demonstrate different aspects of the design. (cad drawing courtesy of bibliocad.com). You may want to represent a site plan at a calibration of 1:500, just perhaps evidence floor plans at 1:100 for example.
Working with scales for architectural representation
In architecture, we employ a collection of standard scales to represent our designs. For example, it is common practice to produce floor plans at a scale of 1:100 (dependent on size of project and paper). Once you lot gain an agreement of scales, it is piece of cake to understand which scale is most suited to which type of cartoon.
Scale bar blocks courtesy of cad-blocks.co.uk.
These scale confined evidence what ane unit represents at unlike scales.
The general requirement of a scaled drawing is to convey the relevant information clearly with the required level of detail. If you are working in do there will often exist office standards. For example, they may just use layout sheets of either A3 or A1 – depending on the scale of the project and information that is existence represented. Equally a pupil, yous need to brand these decisions based on industry standard. It is e'er best to employ a 'round' scale, i.e., one of the scales mentioned beneath, and not make up your ain.
What scale should I utilize?
The following looks at the recommended scales for architectural use in the metric organization. The chosen scale and paper size will often depend on the size of site/design of each private project.
Location Plan and Key Plans
ane:1250 (ofttimes requested by planners)
1:thou
i:500
Site Plans, Sketch schemes etc
1:200
ane:100
Programme drawings – floor plans, elevations, sections
1:100
1:50
Room plans, interior elevations
1:20
Component / detail drawings
1:10
1:5
Working out the scale
A calibration is shown as a ratio, for instance ane:100. A drawing at a calibration of 1:100 ways that the object is 100 times smaller than in real life scale 1:1. Yous could also say, one unit of measurement in the drawing is equal to 100 units in existent life.
So, if we were cartoon a table that measured 100cm wide by 200cm long at a calibration of ane:50, you would describe the tabular array 2cm wide by 4cm long on your piece of paper. This is worked out by dividing the real life size (100cm) by 50 (ane:l scale). This gives you a result of 2cm. For the length of the table we divide 200cm by fifty to go a upshot of 4cm.
Of course, it is not necessary to summate the required measurements when y'all draw. You can either use a scale ruler to paw depict your plans, or software such as Revit, AutoCAD, ArchiCAD that will allow you to present your drawings at any scale and easily switch between scales equally required.
How to utilise a calibration ruler
A calibration ruler is a tool that architects, engineers and designers use to draw their designs at an appropriate scale that it fits on a piece of paper and is in proportion to accurately convey the scheme. The scale ruler comes in different shapes, flat or triangular but they all provide sets of graduated numbered spaces, that establishes a proportion of one unit to the specified unit of measurement, i.e. different scales. As an case, the ruler I have in front end of me now has the following scales; 1:1, 1:100, 1:20, 1:200, 1:5, 1:500, 1:1250, 1:2500.
Scale rules accept varying number of scales on them, depending on their intended apply. Using a scale rule is pretty easy when y'all know how.
When you are drawing a program, yous select the scale you intend to utilize by turn the ruler to the appropriate side. You can then depict the line to the desired measurement using the scale ruler. For example, if you have select to draw a 5m wall at 1:100, you lot would select your 1:100 side of the ruler, and depict 5 units along the ruler, as each unit represents 1m.
When you are reading plans, you establish the scale of the drawing or plans, and select that scale on your ruler, you are then able to measure the lines using the correct scale.
How to scale a drawing up or down
Let's look at converting a scale drawing to a different calibration. Y'all tin can considering changing the scale of a drawing past a decimal factor or past a percentage. For example, lets imagine we take a cartoon at ane:l, but nosotros want amend the scale, to prove that cartoon at 1:200. A drawing at one:200 is iv times larger than a drawing at i:l, therefore we would need to increase the size of the drawing iv x. The table below demonstrates the different scale factors required to convert a scale upwards or downwardly.
Table: Converting scales upwards or downwardly
Being able to calibration drawings up and downwardly using percentages has get very useful too. Working in Adobe (Photoshop, InDesign etc), you will find you lot can adapt the size of an object using a per centum, which is bully if you are wanting to accurately scale a drawing upwards or down while working in photoshop while maintaining a precise scale.
Lets imagine you are working on a cartoon that you take imported into an A4 sized photoshop document. The drawing you have imported does not quite fit at its electric current scale of 1:fifty, so you will need to reduce the scale in order to squeeze the paradigm onto the page, while maintaining an accurate scale. By using the table below, nosotros can see that to convert from a calibration of 1:fifty, down to one:100 we would need to reduce the cartoon by 50%. To do this we would make sure the dimension ratios of the image are locked, and go on to type 50% into the size box.
Apparently this is a simple case but yous get the idea. The table below provides the basic conversion percentages to scale a drawing up or downwardly using the standard metric scales.
Tabular array: Converting scales up or downward
Newspaper size scales and magnification
We can now look at amending paper size scales and magnification. There are times when you may have a drawing on an A4 piece of newspaper, that you need to scale up to an A3 piece of newspaper for example. Let's imagine you lot were needing to trace this drawing so would utilize a photocopier to scale the drawing up to the necessary size.
How to catechumen newspaper sizes?
To catechumen the paper size you can use the percentages in the tabular array below. Note that these percentages exercise not correspond to the calibration factors. And so, if y'all scale or magnify a paper size accurately, it does not mean that you will retain an authentic (or standard) scale of the drawing. Then, if yous want to increase the scale of a drawing using a photocopier, merely want to increase it to a standard calibration (1:10 for instance) then you must apply the percentage factors for converting scale. If it is but the paper size you wish to change, so you can use the newspaper size converter. I hope that makes sense.
Table: Converting newspaper sizes and magnification factors
Working with newspaper sizes
When working with ISO paper layouts we know that the standard size of paper was developed on the basis of an area of 1m2, divided according to the ratio of the sides.
This basic format of 1m2 then forms the basis for all other smaller sizes. All A sized paper is either halving or doubling the bones format.
X x Y = i
Below is a list of all the A paper sizes.
Working with scales digitally
One of the great things well-nigh using digital drafting software is that you can produce drawings as multiple scales from one single drawing. Programs such as Revit, AutoCAD, ArchiCAD and many more, allow you lot to draw up your designs at 1:1 calibration, that is real life size, and produce drawings or plots of these designs at an appropriate scale for the newspaper size you have selected.
When working in CAD you tin can let the software do some of the hard piece of work for you by making apply of the paper space selection to create layouts. On your layout sheet you lot are so able to create viewports which feature your cartoon at the required scale. I have recorded a couple of tutorials that will help with setting up drawings for printing at appropriate scales.
I take also recorded a tutorial that explains how to scale a drawing in cad. This is useful if you accept imported a drawing at a dissimilar scale.
You lot tin can download my dynamic scale bar cad blocks hither:
You tin download a handy pdf of this post by clicking the download push below!
Promise you find this useful, if you have any questions, or there is something else you would like to know about, please drib me an emaill (emma@firstinarchitecture.co.great britain) or comment below
Source: https://www.firstinarchitecture.co.uk/understanding-scales-and-scale-drawings/
0 Response to "Interpreting Scale Drawings of House Plans"
Postar um comentário