Drilling into doorway locked? I purchased a chin up bar for the home and it requires...

I purchased a chin up bar for the home and it requires to drill surrounded by some screws into the doorway to install the brackets. Is this safe and sound? Will it have any effect on the house? I hope 1 year the beams won't crumble and my second floor will come crashing down! I with the sole purpose way 140lbs for the register.
Is it unpromising to epoxy resin a broken...
Answers:    if your door jamb was installed okay, you got no worries.
Can you put a trial stroke on an...
On the out of danger side......use 3" screws. You'll bring back a good bite into the studs.