I'll be taking us on calculating the quantity and approximate cost of Asbestos ceiling sheet and PVC ceiling for a mini-flat (I have attached a plan for this purpose) and as usual our measurement would be done using the standard millimeter (mm) mode of measuring.
Note: If you're not familiar with the millimeters / meters tape, then find time to learn it or request for a tutorial in the comment box.
It would have been ideal to start with measuring roofing sheet but I decided to take a more simple task of measuring ceiling sheets so as to prepare us for the next and more complex task of measuring the roofing sheet... (lets get to business).
Things to do:
A. If you're measuring from your Architectural drawings, then ensure the basic dimensions are clear i.e the length and breath of each space.
B. If you're measuring from an existing project (i.e on site) write out all the spaces on a paper and write the dimension of each space before it e.g BEDROOM = 3600mm by 3600mm OR 3.6m by 3.6m (millimeter or meters).
C. Well, the next thing to note is identify the particular roofing sheet you plan to use and its standard size (length and breath) e.g Asbestos roofing sheet = 1200mm by 1200mm; PVC ceiling = 5,950mm by 250m and POP board = 600mm by 600mm. If you're using any other ceiling board, just get the size.
Once the information above is gotten, you can proceed to calculating how much board you'll need per space.
There are 2 methods of calculating the quantities - use whichever you find easier (we would calculate the living room using both methods and calculate others using only one of the methods). Now to business.
- MATERIALS NEEDED FOR LIVING ROOM (using ASBESTOS 1200mm by 1200mm)
Living Room: Method One (Area)
This method simply implies finding the area of the space in question and diving it by the area of ceiling material to find out how many is needed.
Living Room = 3.9 x 4.5 = 17.55m2
Area of materials = 1.2 x 1.2 = 1.44m2
Hence: if 1 board = 1.44m2 how many board is in 17.55m2
= 17.55 / 1.44
= 12.19 boards = 13 boards (because you cannot buy 0.1 board, you have to buy 1 full board)
Lets use method Two:
Living Room: Method Two (L by B)
This method is a bit complex where the ceiling material isn't a square, it just needs a bit more care.
Size of Living Room; L= 3.9m by B=4.5m
Size of Ceiling Material; l= 1.2 by b= 1.2
Now Divide L by l and B by b = 3.9 / 1.2 and 4.5 /1.2 (just divide the upper nos by the nos below it)
= 3.25 and 3.75 (now multiple both)
= 3.25 x 3.75 = 12.19 = 13 boards.
Simple right? but lets solve using method two only for PVC ceiling of size 5.95m by 0.25m below. (note: PVC sizes vary, confirm the size you're buying first).
- MATERIALS NEEDED FOR LIVING ROOM (using PVC 5,950mm by 250mm)
Size of Living Room; L= 3.9m by B=4.5m
Size of Ceiling Material; l= 5.95 by b= 0.25
Now Divide L by l and B by b = 3.9 / 5.95 and 4.5 /0.25 (just divide the upper nos by the nos below it)
= 0.66 and 18 (now multiple both)
= 0.66 x 18 = 11.88 = 12 pieces.
Simple right ? You should try same using the Area method also.
THE MOST IMPORTANT THING IS TO ENSURE YOU GET THE RIGHT SIZE OF YOUR CEILING MATERIAL FROM YOUR LOCAL MARKET OR TRUSTED SOURCE (NOT GOOGLE) BCOS THE GOOGLED SIZE MIGHT NOT BE AVAILABLE IN YOUR REGION.
Now that we know the principles - Let's quickly find out how many of the 1.2m by 1.2 asbestos board we would need.
Terrace = (5.06 / 1.44) = 4 pcs
Living Room = (17.55 / 1.44) = 13 pcs
Kitchen = (10.8 / 1.44) = 8 pcs
Store = (4.02 / 1.44) = 3 pcs
Bedroom 1 = (12.96 / 1.44) = 9 pcs
Bedroom 2 = (12.96 / 1.44) = 9 pcs
Toi / Bath = (2.97 / 1.44) = 3 pcs
Space b4 Bedroom = (1.35 / 1.44) = 1 pc
HENCE TOTAL = 50 pcs only - Normally there is no waste for this material (or ideally we have added it into the calculation when we approximated to the nearest whole number; Hence buy only 50 pcs + 1 more = 51 pcs only.
COST OF ASBESTOS BOARD....
Presently Nigerite Asbestos goes for between N1,400 - N1,500 per one; hence:
51 pcs x N1,500 = N76.5k (always add for transportation to site)
OKAY!!! - Thanks for following, practice using other ceiling material and ask questions. (Our next class would be calculating roofing)
Thanks - You can request a tutorial by sending us a mail using the contact form top right.
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