Re: Really OT, Structural engineering question

2012-10-21 Thread David Parsons
Notching will hold more weight than simply screwing them together. 40 Gallons of water is 320 pounds. Notching and lag bolts should be fine. On Sun, Oct 21, 2012 at 11:42 AM, David J Brooks wrote: > Sorry about this folks, but i'm sure someone here will have an answer. > > Last year, after i ha

Re: Really OT, Structural engineering question

2012-10-21 Thread Rick Womer
Wouldn't lag bolts and some bracing, without notching, be at least as strong and a lot easier? Rick   http://photo.net/photos/RickW - Original Message - From: David Parsons To: Pentax-Discuss Mail List Cc: Sent: Sunday, October 21, 2012 11:46 AM Subject: Re: Really OT, Struc

Re: Really OT, Structural engineering question

2012-10-21 Thread David J Brooks
rs, the ones that the barrel actually sits on, are the ones that spread apart about an inch or so. Dave > > > http://photo.net/photos/RickW > > > - Original Message - > From: David Parsons > To: Pentax-Discuss Mail List > Cc: > Sent: Sunday, October 21, 201

Re: Really OT, Structural engineering question

2012-10-21 Thread John Sessoms
List Cc: Sent: Sunday, October 21, 2012 11:46 AM Subject: Re: Really OT, Structural engineering question Notching will hold more weight than simply screwing them together. 40 Gallons of water is 320 pounds. Notching and lag bolts should be fine. On Sun, Oct 21, 2012 at 11:42 AM, David J B

Re: Really OT, Structural engineering question

2012-10-21 Thread Anthony Farr
While I'm not sure what you mean by "buckled", looking at the picture suggests that it might have settled with some spreading, some twisting and some leaning. Is that the case? That structure seems to have all its strength focused at the cross point, and depends for its strength upon mechanical f

Re: Really OT, Structural engineering question

2012-10-21 Thread Anthony Farr
Having just seen your picture of the actual stand, I think you need to put a little more twist resistance into the lower half, because nothing is bracing the legs below the 'X'. No stringers there, so maybe just a diagonal brace from end to end attached directly to the legs. Your horizontal plate

Re: Really OT, Structural engineering question

2012-10-22 Thread David J Brooks
On Sun, Oct 21, 2012 at 9:59 PM, Anthony Farr wrote: > Having just seen your picture of the actual stand, I think you need to > put a little more twist resistance into the lower half, because > nothing is bracing the legs below the 'X'. Sorry i guess the word would be spreading apart more than bu

Re: Really OT, Structural engineering question

2012-10-22 Thread William Robb
On 22/10/2012 6:42 AM, David J Brooks wrote: Sorry i guess the word would be spreading apart more than buckling. I think the main problem with the small horizontal brace, the one that separated is the 1 1/2 difference in flatness with the X pieces not being notched. The one end is screwed flat a

Re: Really OT, Structural engineering question

2012-10-22 Thread David J Brooks
On Mon, Oct 22, 2012 at 9:30 AM, William Robb wrote: >> Thanks all, i now have a small winter project to stay busy.:-) >> >> Dave > > > Notch it 1/2 the thickness of the planks (they look like treated 2x6), and > then glue it with PL Premium (the bond will be stronger than the wood) and > then us

Re: Really OT, Structural engineering question

2012-10-22 Thread Bruce Walker
On Mon, Oct 22, 2012 at 9:32 AM, David J Brooks wrote: > On Mon, Oct 22, 2012 at 9:30 AM, William Robb > wrote: > >>> Thanks all, i now have a small winter project to stay busy.:-) >>> >>> Dave >> >> >> Notch it 1/2 the thickness of the planks (they look like treated 2x6), and >> then glue it wit

Re: Really OT, Structural engineering question

2012-10-22 Thread David J Brooks
On Mon, Oct 22, 2012 at 5:18 PM, Bruce Walker wrote: > On Mon, Oct 22, 2012 at 9:32 AM, David J Brooks wrote: >> On Mon, Oct 22, 2012 at 9:30 AM, William Robb >> wrote: >> Thanks all, i now have a small winter project to stay busy.:-) Dave >>> >>> >>> Notch it 1/2 the thickness of