You should see a small cylindrical button protruding from the center of the knob.
Block door from inside.
As with steps 1 and 2 this technique works if the door opens inward towards you.
Most people try to block the whole door but right below the doorknob is the area that really counts.
435 doors cad blocks.
Place the piece of furniture as close to the opening of the door as you can.
Works well but i had to add a 3 4 wood blocks behind the bar to prevent the door from being able to opened the 1 2 and then allowing the bar to be wedged up with a narrow tool.
Even a shoe or a slipper can work if the gap is large enough.
Once that is complete the heavy metal mountings in to the door frame make solid and secure.
This should lock the door.
Lock the door from the inside.
Block the door from the inside by stuffing a sock or a similar piece of fabric under the door.
And if someone attempts to open the door the wedge will act as a barricade.
You don t need a key to lock most doors from the inside.
120 high quality doors cad blocks in plan view.
A solid core door helps block the transference of sound by eliminating the drum like construction of a hollow core door.
138 high quality doors cad blocks in elevation view.
If your knob has a push lock.
Similar to a sock but more effective.
The thicker the door the better it reduces noise transfer.
Doors elevation cad blocks.
Place a door wedge with an alarm under the door to block it.
Find the push lock or twist lock button on the inner doorknob.
Doors plan cad blocks.
Doors elevation 2 cad blocks.