Grade calculations: calculate drop, given grade% and run (metric&ft-in)

Terms explained and calculation shown. To do this, you must be able to convert decimal inches and decimal feet to ft-in-fractions and back FAST and be able to do ratio and proportion calculations.
Error: at 6:05, 6:30 and 7:10 I say "mm" 3 times. My bad, correct is "cm". Numbers are good.

[@gennadygefter4011]

Please notice MISTAKE: in this situation it is 2.14 CM NOT 2.14 MM

[@TheStoneWhisperer]

Yeah, that threw me off for a min! I know it's been a while since I used metric, but I do know there is a cm in there before mm...hhehehe. Good catch Gennady :)-

[@stevee9328]

To late for that. I already laid the pipe!

[@hairybass480]

Thank you. At the same time I was able to learn something even with the mistake in measurement. To anyone who uses this or understands it. The world needs you. Take care internet strangers.

[@irecycleable]

Your are a gentleman and scholar! Thank you for making it easy. You should make more videos.

[@apprenticemath]

jose rosas Thanks for sharing, will do!

[@levitatanda5790]

Regards to this mode is it problem for one to get the slope through practical work on the site with the piping work .

[@eltorony68]

I have a 150' of pipe which needs to drop 1/16" per foot. What is the end slope?

[@mubeensakharkar4369]

Hi sir cover level 5.403 and invert level 4.303 and manhole depth 1.100 and length 28 meters how mach slope in %?????

[@nsikakobongeyakz4032]

Sorry sir , check your conversion, it's supposed to be 21.4mm or 2.14cm, millimetres is x1000, centimetres is x100. Please I stand corrected

[@apprenticemath]

Good point, math error`s been over labelled since 2013

[@mahmoudabass9715]

Yas

[@maarankris3218]

Or 2/100=0.02 0.02 x paip length(1.07) =0.0214 m

[@reneeleblanc4413]

What a great idea converting the number used to inchs....Deadly ;)

[@salmannasir7059]

What about taper per inch?

[@shaunbrownlee4267]

What if u needed a % for a pipe laser inside the pipe.would it be the drop divided by the run times 100.ive asked 2 drainlayers.one said the drop divided by run x100.the other said run divided by drop x100

[@apprenticemath]

+Shaun It is drop / run x 100 = ... %

[@Jake25755]

The percentage for pipe is usually always given on a plan

[@josegualcermenez6029]

Its not 2.14 mm. Its 21.4 mm or 2.14 cm. Please check again Mr. apprenticemath.

[@mohsenaghdam3136]

Very useful video thank you👍🏽

[@sherrajanefabre5388]

Thanks for your help sir, helped me a lot! :D

[@johnjtam]

It's actually 21.4 mm not 2.14 mm

[@apprenticemath]

Ooops, thanks, overlabelled 4 years ago. Also in description.

[@andersonreuben1936]

Exactly u made me think I was wrong wen I got 21.4mm...jeez thanks for these comments

[@andrewolexiuk4534]

the DROP is 2cm and 14mm or 21.4mm

[@apprenticemath]

good catch, thanks

[@Eofnit]

Way over complicated this simple process. Convert percentage by moving decimal two place to the left and multiply by run.

[@jettydoom]

2.14 mm is NOT 2% of 1.070 meters 21.4 is though

[@nopin3490]

mm????? come on.. why dont u redo the video...

[@javiercisneros6048]

it is 2.14 centimeters.

[@drchamp1902]

1.07m x0.02 = 2.14 cm

[@howardgilmour8464]

Good video. I thought it was cm :) Thanks a lot

[@dentray]

Too complicated for the metric! The run times the % 1.070mm run x 2% grade = 0.0214

[@entertainmentculture5629]

Here slope is 21.4 mm not 2.14

[@69adrummer]

Aren't you the same guy who does the motorcycle gearing video showing the teeth on a sprocket?! XD

[@apprenticemath]

+69adrummer Of course, just see the links under the "About" tab

[@MegaRiffraff]

👍🏻

[@daddarrian3227]

It should be 2.14 cm

[@somansubbaiah9380]

Not 2.14mm should 21.4 mm

[@adamtabaee7073]

actually it must be 2.14 Cm.

[@sparkuri]

Should just take this down and re-do it imo

[@TheAccidendalEngineer]

thanks bro...from india

[@maarankris3218]

Why do it so complicated just 100/ 2 %=50 its mean 1:50 1/50 x paip length(1.07) =0.0214 m

[@razzilfaraon]

thank you

[@manos3790]

What are decimal feet? I'm intrigued, as it's a contradiction in term🤔😂

[@apprenticemath]

Brilliant question. Explanation: kzbin.info/www/bejne/iJ2nlGN_ipaUrJY

[@MegaBISP]

The American portion starts at 7:20 ;)

[@litlyrics1414]

Bro your training mathematically adopted mind do the convertions faster stop the complication

[@luyandamkhize4477]

Yoooh you make things so confusing

[@apprenticemath]

I don`t make things, don`t own or didn`t invent math either. Just telling as is.

[@nsikakobongeyakz4032]

It's not confusing

[@mohammadyousuf3854]

21.4mm

[@apprenticemath]

As labelled

[@nopin3490]

that's 2.14cm

[@brandsthatcreatelitter1648]

I don’t believe 2% of 1.07M is 2.14mm, hahaa, Cm, not Mm🤣🤣🤣

[@ikramullah5443]

Method of teaching is very poor