how many cu. ft.

[liljojo4711 10+ year member]

can someone give me an estimate (or actual) sq ft of this drawing using 3/4" mdf:

Click to read more...

 

[liljojo4711 10+ year member]

can someone atleast give me a formula or something

 

[bhsdriller 10+ year member]

L x W x H divided by 1728 for a square/rectangle, not sure with the angle in there though

 

[liljojo4711 10+ year member]

lol.... thanks

 

[john denver 10+ year member]

just over 1 cube it looks like

Didnt count wood in that though

 

[4OZGLOVES 10+ year member]

84.6 cubes

sorry i'm 7 guiness in the hole.free bump

 

[john denver 10+ year member]

.83 before sub

 

[liljojo4711 10+ year member]

my brother is an engineer and we got .754 before sub displacement. how did u get .83 before sub? jw who is right lol.

 

[tinmanchris217 10+ year member]

Splitting the left pentagon into a trapezoid + rectangle (each with a height of 6.25" after wood thickness)... then multiplying it by the width (11.5").... I got 0.904 cf before displacement.

If it's a 10" sub, I'd guess 0.1-0.15 cf displacement. Meaning it's 0.8 cf sealed IV box after displacement.

Edit: If your brother is an engineer too, he probably suggested "Fill it with water, and carefully pour it into measuring cups/buckets!" (my initial thought)

 

[liljojo4711 10+ year member]

haha yeah. so u got .904 before displacement, i got .754 and the other guy got .83. something is wrong with two of our calculations....

 

[30hrtz 10+ year member]

close enuff guys! lol its small, im sure id come up with some thing in between there too. wait i will try right quick. brb!

 

[30hrtz 10+ year member]

ok. i got 1.080337 bfore sub displacement.

 

[30hrtz 10+ year member]

so ruffly .85 after displacement. were all close

 

[Johnny Law.Lulz 5,000+ posts]

go to fosgates site and use their thing.

 

[Johnny Law.Lulz 5,000+ posts]

Its .92 before displacement.