How to calculate numbers of roofing sheets from a pitch roof
The most common roof style is the pitch roof and the building is usually
divided at the center which is the apex.
The pitch roof is the easiest to calculate though I won’t bore you with
details, but you can ask your contractor for the size of each roofing
sheet except you are using longspan aluminium roofing sheet which can be cut to exact lenght of the roof.
To make fast calculation, measure the length of the side of building let
say ‘x’, measure the breadth ‘y’. To get an approximate surface area we
will add an arbitrary value for the difference in length due to the pitch
or depth of roof.
So lets say for a house of total length of the front is 1.8m or 60ft
and side which is the longer part is 27m or 90ft.
Area =length of front of house x side of house=18 x 27=486m2
Add allowance for the pitch or depth 20% of Area=20% + 486m =583.2m2
Now find out the length and breadth of each roofing sheet and also
multiply length by breadth.
Assuming the ceilling sheet is 3.6m in length and 1.8m in breadth
Then area of roofing sheet =3.6 x 1.8 =6.48m2
Therefore total numbers of roofing sheets needed approximately is
(Area of building + Allowance)/area of one roofing sheet =583.2/6.48m
=90 sheets
Please note that this is not a standard way of approximating but this is
derived based on my experience for your enjoyment. In any case there is
never a standard way.
August 24th, 2010 at 3:41 pm
u are doing a great joy. im quite naive about building construction. i`ve learnt few things now.
please can you assist to calcul;ate an estimate for building a simple story building with three bed room , two tolits,chitchen
simple sitting/dinning room..
how much will decking of such cost?
what is the cost of drawing plan of this simple building.
any other advice will be highly appreciated
August 24th, 2010 at 11:07 pm
Thanks for the question but to calculate all these requires you have a plan and location if not you will not really get the right estimate. I will send you a mail now.
October 28th, 2010 at 11:37 am
pls can u assist me in caculating the total number alluminium roofing sheet to be used for 2 3bed room hse at meiran alimosho local govt area. and all the necessary things to be used in finishing the roofing sheet. and which best sheet to be bought e.g .55mm or .45mm i just guess as i dont know how they are measured. thanks dipo
December 5th, 2010 at 10:59 pm
Dipo,
The aluminium company will do that for you easily and the best presently is Tower. .55mm is the right guage to use.
March 20th, 2011 at 7:35 pm
I really commend ur wonderful effort in dis forum. Bt pls i need u 2 send 2 my mail d roofing material 2 go 4 (almn or zinc) wit considerations on prices difference. Pls. Thnx n God bless.
April 26th, 2011 at 7:06 pm
please can u assist me using drawing to caculate it
May 18th, 2011 at 6:59 am
ok
May 18th, 2011 at 7:06 am
please go for aluminium check
http://buildingcontractorsecrets.com/2007/12/advantages-of-aluminium-roof-to-others/
July 26th, 2011 at 5:34 am
Well done on this forumn, read through some of your post and they have been helpful and practical indeed.
I am doing my masters in Architecture and would like it if you send recommendations of people who would want a design-floor plans, elevation, etc; both 2D AND 3D.
Please reply to my email(myplanet247@gmail.com) for information on the possibility of this.
January 6th, 2012 at 1:40 pm
Thank u vrymuch sir, i would apreciate it more if u can asist me using a plan or drawing 2 calculate it, God bless u.
January 26th, 2012 at 12:28 pm
gr8 job n tnx 4 impactin dis knowledge
January 29th, 2012 at 3:16 pm
Hi, dis forum is vry practical in nature.
Pls, i wuld luv to knw 4rm u, how to compute d number of woods truss and der sizes from a building plan. Tanks alot, takia!
January 29th, 2012 at 3:19 pm
Is dis forum on facebook? bcos i wuld luv to join
January 29th, 2012 at 6:14 pm
Yes visit http://www.facebook.com/pages/BuildingContractorSecretscom/103203839741983?sk=wall
January 29th, 2012 at 6:15 pm
Thanks
February 21st, 2012 at 6:26 pm
hi there im a 21 year old mail who just started working at Cash Build 2months ago and im eager to obtain the position of sales co-ordinator (doing building plans for clients) but i’ve got the basics but am struggling to calculate roof trusses and tiles per square meter ect. Any suggestions?
February 23rd, 2012 at 1:45 pm
Emma, thank yu for the great work ure doing for people.Advise me on the type of roofing sheets within the minimum amount I have.My building is at the roofing stage now in Oyo State.I cant afford Alluminium.I want to go for local corrugated iron sheets. I learnt they are of diff. types.I saw one in Rivers state #14000 per bundle (20sheets).I still want the best within the above amount.I told my supplier that the brand is swarm and not hand.He said govt. has bond it.But he has diff. types and colours.How many sheets will I use for 4bedrm flat of 188.35m2 including the 20% extra. What type of local sheets do I go for within that above stated sum, what shld be the thickness, lenght etc.
Thanks
Sam
April 11th, 2012 at 12:57 pm
Thanks
May 6th, 2012 at 7:55 am
i quite appreciate what u are doing, i must say u have removed fear from my mind when i think of building a structure of my own.