5o T . + , 20 . [+ 2 a 4 + 7? \ S| 5 — FRONT OF STAND \fa VA 5 2 2 BLAST LINE BEARING x s ~267° YY ~ 267° FROM G.Z. us a 2 ° o a SPL GAGE LINE BEARING + — 10 a j © SRI AVERAGE, BEARING ~267° & BRL TREE STAND BEARING ~267° \ 15 , ] OF STAND X \ \ 2 3 5 7 1d 5 20 30 GROUND RANGE (FT x 10°) Fig. 4.1 Comparison of Uncie Island “see Stand and Free Field Peak Static Overp~zssure Measurements--Shot 3 procedure leading to prediction of breakage has been cutlined in detail in a previous report.S ICMT. Breakage calculations have bee’. cavried out for a range of 1KT to Positive phase duration was stat.c overpressure scaled.=/ In each ase 4 curve of damage vs peak dynami of dynamic pressure wave form factor:. pressure was obtained for a number By choosing a specific degree of danage (i.e., light or heavy) ae -responding peak dynamic pressure was obtained for each wave form fac’ or. Plotting these calc lated points on a comrosite HOB-dynamic pressir --wave form factcr curve*/ resuits in issdamage curves similar to ‘igure 4.2 for each yield investigated. “‘2/ AFSsP,UPSHOT-KNOT’.ULE, Project 3.19. 3/ Sandia Corroration, Methods for Estimating Blast Loading on Simple Seructures, September, 1953, S=CRET--Restricted Data. 4/ U. S. Dept. of Agriculture, Forest Service, Div. of Fire Research, Dynamic Prescure Wave Form-Heicht of Burst Curves, Interim Tech. Report A®Gere4i9, February 10, 1925, SECRET. 41 SECRET - RESTRICTED DATA