How far do you have to be from a C4 to survive the blast?

As a traitor in TTT, you can see a timer and a distance number (probably hammer units, but I'm not actually sure what the number represents) for any armed C4 explosives. How far away do you need to be from the bomb to survive?
Best Answer
according to this Steam discussion the radius increases when the timer gets increased
Traitor Tip: The C4's blast radius depends on its fuse length! If you're in a map with two other innocents, lure them to your one-two minute bomb.
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How far away from an explosion is safe?
DETERMINED BY US FIREFIGHTING PRACTICES WHEREIN SAFE DISTANCES ARE APPROXIMATELY FOUR TIMES THE FLAME HEIGHT.Can you survive a blast wave?
The human body can survive blasts of sudden pressure of 20-40 psi, but it's not the only thing receiving that pressure. The pressure radiates outward from the blast in all directions. When it leaves a vacuum behind it, air from the surrounding atmosphere moves in to fill that vacuum.What Is the blast yield of C4?
C-4 (explosive)C-4FillingRDXFilling weight91%Detonation mechanismPETN-based detonating cordBlast yieldHigh16 more rowsHow strong is a blast of 1 kg of TNT?
A single kilogram of dynamite can yield overpressure effects measured at more than 1,200 kPa (174 psi) at 1 meter and 280 kPa (40.6 psi) at 2 meters. The blast wave expands in all directions unless reflected or channeled by a structure.More answers regarding how far do you have to be from a C4 to survive the blast?
Answer 2
It can differ from server to server, but through testing I have found the the "kill" distance is about 20 "bodys" shoulder to shoulder in a circle around the C4. Everything else will just hurt you.
Answer 3
I've found on a 45second c4 the minimum safe distance with out taking damage is about 850 units (assuming the server you are on displays those, this information is based on the c4 of DinkleBerg's TTT).
Not to Necro this thread but I feel since it's on a top google result regarding TTT c4's it's nice to have a more definitive answer for anyone else curiously searching!
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