Civilā aizsardzība. Laboratorijas darbs

1.Kāds ir sprādziena paaugstinātais spiediens ∆P kPa un kas var notikt ar ēku ?

∆P = (Pmax – Po) * ((m * z) / (Vb * Pgt)) * (100 / Cst) * (1 / Kn) =
= (900 – 101) * ((532 * 0,3) / (7200 * 3,448)) * (100 / 2,681) * (1 / 3) =
= 799 * 0,00514 * 37,2995 * 0,3333 = 51,056 kPa

m = Va * Pg * e = 1 * 760 * 0,7 = 532

Vb = 0,8 * Vg = 0,8 * 9000 = 7200

Pgt = M / (Vo *(1 + 0,000367 * To) = 78 /(22,413 (1+0,000367*25)) =
= 3,448
Cst = (100 / (1 + 4,84 * β ) = 2,681 %

β = nc + ((nh – nx) / 4) + (no / 2) = 7, 5…