Terry

08-23-2005, 02:12 PM

I need to determine how many 1" holes are 16% of the total surface of a 28" x 19" box.

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Terry

08-23-2005, 02:12 PM

I need to determine how many 1" holes are 16% of the total surface of a 28" x 19" box.

stapel

08-23-2005, 02:23 PM

What is the surface area of the box? (Note: If you mean "box", there needs to be a third dimension. With only two dimensions, you get the "area" of a rectangle.) What is sixteen percent of that amount?

Eliz.

Eliz.

Terry

08-23-2005, 02:39 PM

It's an animal (pet) kennel that measures 28" x 18" x 19".

The USDA requires there be ventilation openings located on all four walls of the primary enclusure and the ventilation openings on each of the four walls must be at least 8 % of the total surface areas of each such wall, and the total combined surface areas of the openings must be at least 14% (so I am asking for 16%) of the total combined surface area of all the walls of the primary enclosure. The holes are to be 1" in size.

Thank you for your help. I'm hoping for a simple formula that will help us in the future with all size kennels.

Regards,

Terry

The USDA requires there be ventilation openings located on all four walls of the primary enclusure and the ventilation openings on each of the four walls must be at least 8 % of the total surface areas of each such wall, and the total combined surface areas of the openings must be at least 14% (so I am asking for 16%) of the total combined surface area of all the walls of the primary enclosure. The holes are to be 1" in size.

Thank you for your help. I'm hoping for a simple formula that will help us in the future with all size kennels.

Regards,

Terry

tkhunny

08-23-2005, 03:00 PM

1) What are the dimensions? Which one is HEIGHT?

2) How did you get from 8% to 14%? Whether it is 8% of a pin head or 8% of the Pacific Ocean, it is still only 8%. The percentage doesn't grow with the total surface area. Wait, maybe it just means you can't put all the holes on one side. 14% is really the goal, but you have to spread it around.

3) No hols in top or bottom?

1" diameter circle ==> pi*r<sup>2</sup> = 3.14159*(0.5 in)<sup>2</sup> = 0.785 in<sup>2</sup>

2) How did you get from 8% to 14%? Whether it is 8% of a pin head or 8% of the Pacific Ocean, it is still only 8%. The percentage doesn't grow with the total surface area. Wait, maybe it just means you can't put all the holes on one side. 14% is really the goal, but you have to spread it around.

3) No hols in top or bottom?

1" diameter circle ==> pi*r<sup>2</sup> = 3.14159*(0.5 in)<sup>2</sup> = 0.785 in<sup>2</sup>

pka

08-23-2005, 03:19 PM

You will have two different size sides: 28x19 and 18X19

If the diameter of 1in then the area is (pi/4) sq. in.

16% of 28x19 is 85.12 or 108.3 holes.

16% of 18x19 is 54.72 or 69.67 holes.

If the diameter of 1in then the area is (pi/4) sq. in.

16% of 28x19 is 85.12 or 108.3 holes.

16% of 18x19 is 54.72 or 69.67 holes.

Terry

08-23-2005, 03:45 PM

In answer to your questions:

1) The dimensions are 28" Long x 18" wide x 19" high.

2) The holes are on 3 sides actually, as the front of the kennel is a wire gate closure.

3) There are no holes in the top of bottom.

Thanks again for your assistance.

1) The dimensions are 28" Long x 18" wide x 19" high.

2) The holes are on 3 sides actually, as the front of the kennel is a wire gate closure.

3) There are no holes in the top of bottom.

Thanks again for your assistance.

tkhunny

08-23-2005, 04:48 PM

Well, then PKA was right on. I still don't know how he knew which was the height.

That seems like an awful lot of holes. One may need to worry about structural integrity, but that's a chat for another foum.

That seems like an awful lot of holes. One may need to worry about structural integrity, but that's a chat for another foum.

wjm11

08-24-2005, 12:29 AM

TK may be right about the structural integrity with all those holes. I'm not sure of proper interpretation, but please consider this: the open front may count as most of the ventialtion rqd to meet the 14% goal. If so, then the remaining three sides need only meet the 8% goal -- half the number of holes PKA stated.

Just a thought...

Just a thought...

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