I will start counting without a laptop or computer. I only use cm measuring rollers and notebooks, sorry because I did not find picture books or HP papers at home.
this is when I'm drawing and measuring
first I have to calculate the area of the building that I will design with mild steel with a scale of 1cm: 1m.
the red line comes from a mild steel horse, I split it a few points. and the black line in the middle is the highest angle of the building.
I grew up to 2cm: 1m.
So that the picture is not too small, this is the steepness of the roof to be installed. with 35 ° steepness. How I accept, I multiply the area of the building by the number of degrees we will design
Example: 7m × 35 ° = 245
245 = 2.45m.
after I found the amount of mild steel for each stallion, I was finished and was able to calculate how much material was used, and I was ready to submit it to the homeowner to buy what was needed.
apologize to the seniors because I'm also still learning.