SZ/OEMU/30/1/11 - Earth movement due to 50 kg. bombs exploded at different depths in clay soil at Richmond Park, 5/42

Reference code

SZ/OEMU/30/1/11

Level of description

Item

Title

Earth movement due to 50 kg. bombs exploded at different depths in clay soil at Richmond Park, 5/42

Date/s

1942

Quantity & Format

3 leaves

Corporate name

Great Britain. Ministry of Home Security.

Creator

Road Research Laboratory

Scope and content

R.C. 328

ARP/335/HJHS

"Craters produced by exploding 50-kg. S.C. bombs with their centres of mass at 1 ft., 2 ft. 6 in., 8 ft. 6 in. and 16 ft. respectively below ground level, in clay soil at Richmond Park, were all smaller than those calculated from data given in A.R.P. Hand-book No. 5.

"The manner in which the permanent earth movements decreased with distance from the bomb was found to be similar for the three shallower bombs.

"The horizontal earth accelerations at the surface of the ground were measured in the case of the deep bomb, and were found to be of the order of 5 g. at 10-20 ft. from the bomb.

"The blast pressures and positive impulses at selected distances from the bomb 1 ft. deep were respectively about one-fifth and one-half of those observed for a similar bomb exploded on the surface." Tables and graphs are included.

Report to the Ministry of Home Security.

SZ - Zuckerman Archive
- SZ/OEMU - Ministry of Home Security, Oxford Extra-Mural Unit
  - SZ/OEMU/30 - [OEMU. CDRC - Craters and ground shock wave]
    - SZ/OEMU/30/1 - [OEMU. CDRC - Craters and ground shock wave, 1941-1945]
      - SZ/OEMU/30/1/11 - Earth movement due to 50 kg. bombs exploded at different depths in clay soil at Richmond Park, 5/42

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