blast load
blast load
(OP)
Anyone here knows how to "rough" calculate the pressure for a ducting/plate 1 meter away from a 5psi blast load.
I have an equipment that may have a blast force of 5 psi and i need to contain it with a duct/plate. Duct is 1 meter away from the blast.
I just need a rough, conservative approach.
I have an equipment that may have a blast force of 5 psi and i need to contain it with a duct/plate. Duct is 1 meter away from the blast.
I just need a rough, conservative approach.






RE: blast load
UFC 3-340-02
Handbook for Blast Resistand Design of Buildings
Ed. by Donald O. Dusenberry
John Wiley & Sons 2010
I have been reading a bit the last one but don't feel confident enough to give direct advice for now.
RE: blast load
RE: blast load
RE: blast load
i have a copy of ASCE Design of Blast Resistant Bldg.
And based on the formula of front load reflected overpressure is bigger than 5 psi. I was expecting it to be lower than 5psi. I am probably not interpreting this correctly for equivalent static pressure.
RE: blast load
What precisely I haven't understood from the text is that first goes for what in the uploaded page, then goes for a separate case for the front of a building (then sides, rear, roof as well) to find the bigger load you are finding. Now, in my mind that kind of thing seems mainly reasonable if the extent of the obstruction is as big as to produce confinement, other than that, it would make scarce sense to get some evaluation like that in the uploaded page, that would correspond to minor obstructions to the blast unable to show the confinement effects bigger surfaces are able to develop. But whilst I clear the matter better wait for expert advice.
RE: blast load
EXPLOSIVE LOADING OF ENGINEERING STRUCTURES
Philip Bulson
Taylor & Francis e-Library, 2003
makes clear reflected pressure pr goes weel above free field incident overpressure p0. However determining loading, as in the other text is a bit more complicated, depending on the setup, so, again, better go for the reference itself. I muse on what read that a sketch would be useful to those trying to help, making note of if indoors explosion and vents etc