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Sunday, January 26, 2020

AutoCAD Tips and Tricks: Fixing Image Scaling Issues In 3 Easy Steps!

Exclusively! Survey maps of Koura District and much more, are inside!

A big Hello to my readers from anywhere on the globe!

The fact that you are reading those lines right now makes me assume that you are interested in the topic of this blog or at least in some other related to it, such as Designs and Architecture, being as a professional or just a student or amateur.

Anyway, and whatever is your consideration, I would like to thank you for your interest in my writings and hope you'll enjoy this another one today!

What I want to discuss is some kind of educational material more than other things; kind of AutoCAD tips and tricks for achieving a specific purpose. So, let’s start from the end, from the purpose as I told previously:

THE PURPOSE: Have a pre-surveyed lot for your sketches.

What if you need to design a new building within a particular piece of land or plot (by using the technical word here), what are the steps to follow in the preparation of a proposal? Without costs and free of charges of course because you, as the designer, didn’t yet get paid for your sketches...

So first thing first, you need to have in hand a layout of the plot, not necessarily to be accurate, just to implant your pre-project inside. You might say that is the surveyor's job to provide you a copy of the particular plot limits’ layout; You are right, this is absolutely true, but in some cases, you might fall on such a client who will not pay a surveyor before having at least a glimpse at what he is going thru.

In other terms, he wants to visualize what kind of projects he will spend his money on. Which is also his total right. So what is the solution?

Of course, the solution isn't by excluding the surveyor, because you will need him for your final formal documents. All you need is to have a copy of the plot boundaries on your own and free of charges, just sitting in your office.

But, how to do it? Okay, I will tell you how in the next section.

AutoCAD TIPS and TRICKSFixing the survey maps scaling when inserted as an image into the AutoCAD drawing.

You surely have some old copies of the surveying maps for some projects you previously worked on, particularly in your area of work. I meant by area-of-work the area within you have the most projects and reputation of works you executed during your career.
Good to know that the original copy of those maps from the formal department cost each one about LBP 50,000 (equivalent to US$ 33.33) and if available. So, it's worth it!
Anyway, presuming that you have a copy of those maps and you know the particular lot number, I will explain the tips or steps on how to get a soft copy from it.

Step 1- Do a scan of it.

Depending on the paper size of the map (usually from A0 to A4 format), use the appropriate scanner size to fit all the drawings or just the area that contains the Lot.
I suggest scanning the whole paper for future use of the surrounding plots included. If you don’t own a large format scanner, you can scan it from any digital services stores; they are anywhere in the country and it only cost US$ 5.00 for the monochrome output + the CD for the image file, .jpg or .pdf format type. I am not sure if an editable copy can be done from it since the majority of the scanners available in the market produce an image output only.
The output scan settings should be set to 300 dpi for resolution if you are using the metric unit scale for drafting in the AutoCAD™ program; The distance between grid lines will be automatically set.

This parameter can be changed with any photo editing software later, keeping in mind your image pixelation density and the resulting file size for the setting exceeding >300 dpi.

Note: The AutoCAD™ is a registered trademark of the AutoDesk Company

It is preferable that the reference scale should always be the grid lines because they are here for the good homogeneity of the scaling, in both directions vertical and horizontal, i.e. the X and Y-axis.

Usually, a map sheet came with a scale of 1:1000, unless some exceptions, which means a distance of 100 meters between the gridlines in both directions.

Step 2- Insert it onto your drawing.

Use the drag-and-drop tool to do so, instead of using the classic insert image command and it provides the same options for rotating and scaling the image.

In my opinion, it is much easier and more practical to manipulate also.

Don't forget to leave the same values as 1, when prompting for the rotate and scale parameters: Enter⤶ (1) for the prompted scale value, in a way to keep the scaling unchanged.

After the inserting process, always check if the result is satisfying; which means performing a check for the distance will be helpful to prevent future errors. It should display 100 units (here, the metric) or approximate value.

An error range of <0.2 meters is acceptable due to the map scale factor, as shown here:

Autocad tips and tricks, survey maps
A screenshot showing the verified distance between the guidelines

Step 3- What if the scale didn't match?

Don't worry, because the software is full of AutoCAD tips and tricks, and they are here to help! In the case of non-matching results for any reason, don’t give up! It can be the scanner calibration adjustment settings that were inappropriate or else, but it is not a problem at all because you can fix it by yourself, and here’s how:
  • This procedure is applicable to all AutoCAD™ versions;
Use the Scale (SC) command⤶, then press (R) for the Reference option⤶.

You will be first prompted to specify a base point. Select any point you like but don’t forget where you did pick it because you will be prompted secondly to choose it again when picking the next prompted point for the first point in the originally specified distance. The second point in the same previous specified distance will be next to choose.

Followed by the newly second point to be the next final selected point which ends the command.
As a result, you will have your inserted image map scaled according to the new distance specified in the previously completed command.

And that’s all! You are done in less time and cost.

In conclusion, you can now present your proposal to the client to claim his primary approval.

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Finally, it is good for an Architect Designer or related professionals like surveyors, real estate brokers, engineers, and others to have their particular and own library and thus, their favorite maps.
It will be their personal and unique reference with its original multiple items. In addition, they will look more professional in their career and will get respect from the clients.

  • As for me, I did collect some materials related to my almost areas of work during my professional career, which is mainly the Koura region in the North of Lebanon and especially in my hometown Amioun.
  • The good news is that I am sharing my files over an online network (https://payhip.com), for the public utility and for anyone who's interested in that kind of material.
  • The downloadable documents within those links contain surveying maps for the regions of Koura, Zgharta, and Bsharri from different resources. By meaning, we have tens of sheet maps for each casa, divided into several towns and villages here. All the documents are in .dwg file format, with the plot number labeled inside each of the featured plots, which means an easy way to search and find any number for any plot within the selected area by using the AutoCAD tips and tricks FIND command.
  • Not to mention the editing tools and commands of the software, by means of editable files to the fullest.
  • In addition to the above, my collection also includes a scanned version of Amioun’s surveys maps (31 sheet maps) with the formally designed zoning (النظام التفصيلي للبناء - الفرز والضم - الاستثمار وتقسيم المناظق) and planning decrees (المراسيم التظبيقية للمخططات الحديثة), which is indispensable for any architects for the well-designed project with the setback-outlines and all the related issue-free. All the documents in this section are in the .jpg format file.

You can now buy your selected items as per the Town_name by selecting them from the lists below:

  • Moreover, and for the surveyors' needs, I shared this useful complete map of Koura's District. As a bonus, you can find the most used ACAD's Arabic fonts ready to download here.
Please read the readme.txt file provided within the downloaded folder, for an easy-to-follow-step-by-step guide for properly installing the fonts.
For further information or questions, please don't hesitate to contact me at (+961) 3 577506/ Lebanon, or email me at info@101architechprojectsandblogs.com, I'll be glad to assist you!


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