First thing to do is find the area of the figure(s).
What do you get?
Find attached an image of a solid piece of concrete sidewalk, disregard the colour variation, think of this diagram as ONE solid piece of concrete. I'm trying to determine how many linear metres I can pour of concrete sidewalk with 11m3 of concrete. I need to understand how you arrived at the quantity. Please be very detailed, I require these types of calculations in my daily job.
Thank you for any help you can provide.
I'll begin with the cross section of sidewalk. The drawing is correct 'monolithic sidewalk' is sidewalk and curb poured as one. The 450-250-350mm section is the curb and the 1.5m x 150mm is the flat walk--this represents one solid piece of concrete when cured.
My boss walks up to me and said " Bob, I have 11m3 of concrete on its way and I need you to instruct the concrete formers to prepare enough monolithic sidewalk forming so all 11m3 is used, none wasted.
Now I know the dimensions in the drawing I provided, standard stuff, what I need to find out is how long do I instruct the conc formers to build the forms in linear meters. This is important because the cost of the concrete and time constraints in off loading the concrete I need to have an uninterrupted conc pour and secondly, if my crew consists of 11 men and equipment and I need to stop the pour because the forms are not long enough, I run the risk of the concrete going bad (yes concrete will go bad) and 11 men at $30.00 per hour standing around would not make my boss very happy.
So the question still remains; using the provided dimensions and with 11m3 of concrete on its way; how long are the forms required to be built to accept the 11m3.
I have the area as .34875m2
I then divided .34875 by 11 for a total of 31.54 L/m of form required to accept the volume (11m3) of concrete.
I'm I close or should I begin all over again?
Volume is "area times length" so 0.34875*length= 11. Actually you divide 11 by 0.34875 rather than 0.34875 by 11 but that is what you really did since you get what I got. My calculator says that length= 11/0.34875= 31.5 m (approximately).