Re: Safe Room Door Lock

["Bob Worthy" <securinc@xxxxxxxxxxxxx>]

"Robert L Bass" wrote in message

> > I doubt though that a screwdriver could pry opened (towards you) a 600lb
mag
> > lock...I've tried blasting against one that opened away and couldn't do
it
> > with my massive super strength :-)
>
> I forced a 600-lb lock open with my shoulder once and I'm only of
> average strength -- not exactly a weight lifter.

I think everyone here has already made that assumption

> If there's a wall or
> other rigid, parallel structure nearby, a strong man could open
> the door using leg pressure.

Not when the door swings outward. Please read and understand the OP post
before you grace us with your vast knowledge.

 >It's surprising the amount of
> pressure even an average adult can deliver in a leg press.

This coming from not exactly a weight lifter by his own admission.

> Consider the leverage of a 12" long screwdriver with 1/2"

You sure like that fraction. Didn't we hear the same thing about a drill bit
just recently.

> inserted into the space between the door and the frame.  There's
> a 23/1  mechanical advantage.

The force would be downward, not outward, with only a 1/2" insertion on 1
3/4" door. The best the perp could expect is to take a chunk out of the door
and only if the shank of the screwdriver didn't bend upward first.

> The thief only has to apply about
> 30-35 lbs of force.  Note: If it were linear motion the figure
> would be just over 26 pounds, but the screwdriver is describing a
> circular arc so the required force in a tangential direction
> increases somewhat.

Have to break out the old slide rule for that line of BS there, Robert?
>
> If the door opens away from the lock it's even easier

Have you ever seen a door open into the lock? BAHAHAHAHAHA....Do you know
how to spell Door Stop?? Stop Robert...I can't take it any more...I am LOL
until my side hurts. Why don't you drop the 4 online stores and do Stand Up?
I don't think people would pay but you are hilarious.

 -- take a
> run and hit it with your shoulder.  I weigh just over 200 pounds.

BAHAHAHAHAHA....just?......just?

> At a 15 mph sprint that's more than enough force to pop a 600-lb
> lock.

Lets think about this for kicks and giggles. A safe room is probably... what
6'X8'? Maybe 8'X10'? and you want someone to get to a 15mph sprint in that
distance. Riiiightttt! And why should they do this? To get out? Remember the
door swings out. All they have to do is hit the rex button. Why take a
chance on injuring their shoulder? Next, a perp could take a 15mph run,
which is questionable inside any structure, at it and if the door is
installed properly, with or without a mag of any size most likely will
bounce off the door and land on his ass. Why, because, again Robert, the
door swings outward.
Your propensity to quickly jump in and cast your opinions vastly outweights
your understanding of what you read. Your so easy, but keep it coming, if
for nothing more than kicks and giggles.

 With a 1200 pound lock it would be significantly harder to
> pop.

Astute observation

> If you use an 1800 pound lock the required force would
> destroy the door before the magnet would give way.

Brilliant

>Most folks
> will part with a few extra dollars if they can see a significant
> advantage in the hardware.

As presented by RLB.