I’ll be taking us on calculating the quantity and approximate cost of Asbestos ceiling board 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) and meters (m) 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.

**What To Do:**

- If you’re measuring from your Architectural drawings, then ensure the basic dimensions are clear i.e the length and breath of each space.

- 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)

- Well, the next thing to note is identify the particular ceiling sheet you plan to use and its standard size (length and breath) e.g Asbestos ceiling 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)

**Using 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; Multiply L= 3.9m by B=4.5m

Size of Ceiling Material; Multiply 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 multiply both)

= 3.25 x 3.75 = 12.19 = 13 boards.

*THE MOST IMPORTANT THING IS TO ENSURE YOU GET THE RIGHT SIZE OF YOUR CEILING MATERIAL FROM YOUR LOCAL MARKET OR TRUSTED SOURCE because 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 before 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 IN NIGERIA**

Presently Nigerite Asbestos goes for:

**N1,900 For Plain Design;**

**N2,300 For POP Design;**

Hence:

51 pcs x N1,900 = N96,900k (always add for transportation to site)

51 pcs x N23,000 = N117,300

Thanks for following, practice using other plan.

Credit: SAYDFACT