THANKS DONALD... I'll bet you wasted as much time today as I did !!!!!
john
Everyone seems normal until you get to know them.
----- Original Message -----
From: "Donald H Locker" <dhlocker@comcast.net>
To: "john niolon" <jniolon@bham.rr.com>
Cc: "David Scheidt" <dmscheidt@gmail.com>; "shop-talk"
<shop-talk@autox.team.net>
Sent: Tuesday, August 26, 2008 7:14 PM
Subject: Re: [Shop-talk] 2 by's for truck ramp
> 20% almost exactly. Accurately, it'll be 11.625/9.625 or 21.1% (not
> counting variation in the lumber.) On the other hand, a 2x4 on edge under
> a 2x10 will _add_ (1.625/9.625)*(3.625^2)/(1.625^2)) or 1.5x the strength
> of the 2x10 alone. So put a 2x4 under your 2x10 and make it 2.5x as
> strong. Or two of 'em and go up to 4x the strength (1 + (1.5x * 2)).
>
> Donald.
>
> john niolon wrote:
>> I wonder where the specifications for tensile strength are ??? looked
>> around on the internet ...found lots of specs on 'manufactured wood" but
>> nothing on a common pine 2x10...
>>
>> I'm sure grade enters into the formula and percent of water and
>> greeness.. (hey !! I'm politically correct...I'm talking greenness)
>> but I wonder how much stronger (resistance to breaking across the wide
>> face when loaded) a 2x10 is compared to a 2x12... ???
>>
>> anyone hazard a guess
>>
>> john
>> ----- Original Message -----
>> From: "David Scheidt" <dmscheidt@gmail.com>
>> To: "Skip Albright" <salbrigh@nycap.rr.com>
>> Cc: <shop-talk@autox.team.net>
>> Sent: Tuesday, August 26, 2008 8:44 AM
>> Subject: Re: [Shop-talk] 2 by's for truck ramp
>>
>>
>>> On Mon, Aug 25, 2008 at 8:38 PM, Skip Albright <salbrigh@nycap.rr.com>
>>> wrote:
>>>> Seems like an easy choice, but maybe not.
>>>>
>>>> I need to have a couple 2 by's for a ramp to my pickup.
>>>>
>>>> No particular load, but could be pretty heavy .
>>>>
>>>> last week it was a model A frame and axles.
>>>>
>>>> 2 x 10? 2 x 12? are wider boards stronger?
>>> Wider boards are stronger, if you turned them sideways. It's the
>>> depth of the beam that determines its load capacity.
>>>
>>> --
>>> David Scheidt
>>> dmscheidt@gmail.com
>>> _______________________________
>
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