My Math Forum Buoyancy / Load capacity of a barrel... plz help!

 Algebra Pre-Algebra and Basic Algebra Math Forum

 May 21st, 2012, 03:09 PM #1 Newbie   Joined: May 2012 Posts: 2 Thanks: 0 Buoyancy / Load capacity of a barrel... plz help! Hi, First, this is a short explanation as to why I need some help. I'm building a 20 ft x 12ft pontoon boat to be used on a lake. It will float by use of closed polyethylene barrels with with normal air (NOT compressed). The barrels will be held in place by a wooden deck. On top of this deck, I'm building a 12 ft x 8 ft wooden cabin, with door, windows, and a roof that doubles as a deck. Additional major weight factors include the motor, anchor, batteries, small canoe, fresh water storage, people, supplies, etc. But before I get to drawing and building I need an answer to the most important question: how much weight can my barrels support? Right now, I'm considering 2 sizes: 55 Gallon Polyethylene Barrel 34 3/4 (in) height 23 1/4 (in) diameter 23 (lbs) weight This is a straight barrel (NO tapering) Or 30 Gallon Polyethylene Barrel 34 3/4 (in) height 23 1/4 (in) diameter 23 (lbs) weight This is a straight barrel (NO tapering) I would much prefer using only the 30 Gallon size, however, that might not be feasible. Anyway, hope someone can help me out determining the load bearing capacity of the above barrels on water. Thanks
 May 21st, 2012, 03:14 PM #2 Newbie   Joined: May 2012 Posts: 2 Thanks: 0 Re: Buoyancy / Load capacity of a barrel... plz help! DIMENSIONS OF 30 GALLON BARREL WRONG. The specs of the 30 gallon barrel are: 31 (in) height 19 (in) length 19 (in) diameter 13 (lbs) weight
May 22nd, 2012, 01:33 AM   #3
Global Moderator

Joined: Dec 2006

Posts: 20,747
Thanks: 2133

Quote:
 Originally Posted by newercase how much weight can my barrels support?
Let's assume that under maximum load the barrels (and nothing else) are just submerged. The total load supported, including the weight of the barrels, would then equal the weight of the water displaced, which can be calculated as the product of the total volume of the barrels and the density of the water.

Is the revised specification for the 30 gallon barrels correct? I don't understand what is meant by the length of a barrel, as distinct from its height.

 Tags barrel, buoyancy, capacity, load, plz

,

,

,

,

,

### 30 gallon water barrel for floatation

Click on a term to search for related topics.
 Thread Tools Display Modes Linear Mode

 Similar Threads Thread Thread Starter Forum Replies Last Post r-soy Physics 2 June 4th, 2011 06:53 PM jsmith613 Algebra 8 November 22nd, 2010 10:03 AM kasiaogor Calculus 1 November 7th, 2010 02:33 PM MB1 Algebra 3 February 23rd, 2009 04:45 AM

 Contact - Home - Forums - Cryptocurrency Forum - Top