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7 votes
Accepted

Is this frame design sturdy enough for a window seat?

In terms of compression strength, I wouldn't want to park a big car on top of it - but even a couple of drunken teenagers jumping up and down should be fine. As others have commented, racking side-to-...
Martin Bonner supports Monica's user avatar
4 votes

Shelf made of 1x2 pine boards. Stable?

Each shelf is capable of holding the load that you are intending with shearing or sagging. Where this design fails is in racking, both front to back and side to side. Traditional shelves are built ...
Jacob Edmond's user avatar
  • 1,853
4 votes

Shelf made of 1x2 pine boards. Stable?

The weakest part of the design is how your substantial load is being carried to the uprights. There's not that much you can do for those joints as drawn... I'd suggest you add actual 1x2 members ...
Aloysius Defenestrate's user avatar
3 votes

Reinforce bunk bed

Let me suggest a simpler, but more radical approach. Drive several long screws through the bed rail which is against the wall, and into 2x4s in the wall. You'll need to locate the studs, of course, ...
WhatRoughBeast's user avatar
3 votes

Reinforce bunk bed

The pine 2X2 corner uprights are skimpy ( have low modulus). I think it will require significant diagonal bracing in most corners to stiffen it. I used 1X4 oak boards connected in a "L" for ...
blacksmith37's user avatar
3 votes

Reinforce bunk bed

I would re-check that you have really tightened all the barrel bolts The ones that lock the post and prevent the racking are the bottom headboards and the 4 top safety rails. Tightening the bottom ...
Programmer66's user avatar
3 votes
Accepted

What supports do legs need on a very short workbench

This is intended to be my main workbench, and will be used for all of my hand tool work A rock solid desk that doesn't shake or wobble would seem to be a requirement for hand tool work of any kind. ...
Reactgular's user avatar
  • 1,003
3 votes
Accepted

How can I strengthen my 3/4" Plywood Bunk Bed Plan?

I plan on using 3/4 plywood (.706 or so) with 3/8" dowels and some pocket screws (as well as titebond). I don't want to over or under engineer it. Actually you should seek to over-engineer this, or ...
Graphus's user avatar
  • 66.6k
3 votes

How can I strengthen my 3/4" Plywood Bunk Bed Plan?

The easiest way to prevent racking would be to replace the slats at the head and foot of the mattress supports with a solid piece of plywood approx 1' wide that is solidly connected to the three sides ...
Ashlar's user avatar
  • 8,464
2 votes

Shelf made of 1x2 pine boards. Stable?

The sagulator calculates a sag of 0.03 in over 24" for a 50 lb uniform load on a single 1x2 of (Ponderosa) pine laying on its face. So your 4-board shelf should be stable given that weight load. A 12" ...
mmathis's user avatar
  • 2,622
2 votes

How can I determine the load capacity of a simple bench?

You can always take the Calvin & Hobbes approach!
CoAstroGeek's user avatar
2 votes

How likely is it that my kids will break this bench?

The weakest point ended up being the half-laps (as predicted by @SaSSafraS1232):
Morgen's user avatar
  • 197
2 votes

Can I use paracord to prevent a Large desk from racking?

Im afraid of the table swaying or racking...and was wondering if I could use paracord to diagnolly brace the legs to prevent this No. Real, military-spec paracord is required to stretch a minimum of ...
Caleb's user avatar
  • 9,588
1 vote

Is 1/8" plywood enough to prevent racking or do I need 1/4"?

The great thing about preventing racking is that it can be done completely through tension. Almost any normal construction material is quite strong in tension. 1/8" plywood should be fine, as ...
SaSSafraS1232's user avatar
1 vote
Accepted

How likely is it that my kids will break this bench?

If the occupants of the bench rock to the left and right, the wedge will apply a large force on the end of the pegged tenon. The expected failure point is marked in the image. A combined weight of ...
Stephen Meschke's user avatar
1 vote

How can I strengthen my 3/4" Plywood Bunk Bed Plan?

While this is a great design overall, I'd be a tiny bit concerned about the pocket screws resisting side to side racking. If you could make one (long) side out of a single sheet of ply, the other side ...
Aloysius Defenestrate's user avatar

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