THE AREA ENCLOSED BY ISOSEIST NO. 2. 
11 
at right angles to the length of the frame, so that the frame could 
bend much more easily in the d 
angles to it, or sideways. 
rection of its length than at right 
FLAT-mON 
SUPPORTS 
-1 
-=1 
r- 
PLAN OF THE WIRE AND FLAT-IRON FRAME SUPPORTING THE LEAF TRAYS 
IN THE LUSKERPORE TEA GARDEN DRYING HOUSE?.. 
After the shock, the iron frames in the houses running east and 
west were found to be bent into a tangled mass of scrap iron, while 
those in the two houses running north and south were very little 
damaged ; only a few of the upright flat-iron supports being bent. 
In this latter case the bending was always east and west, and the 
flat-iron support had rotated so that the flat surfaces were facing 
approximately east and west, thus enabling it to bend in those direc- 
tions. The direction of the shock Heems therefore to have been 
approximately east and west. 
At the Chandichara estate, the Manager's bungalow and the 
factory had their waUs shattered, and in places thrown down. ; the 
roofs, having iron frames, were left standing. The eastern and 
western end-walls of the factory fell outwards, and the iron chimney 
was bent over towards the east. 
The trolley line to the factory, where it curves gently from 
approximately north-east to east-north-east, was considerably bent 
and in places broken. 
On the Assam- Bengal Railway the chief damage was the 
fracturing of piers and abutments of the Doloi, Manu, and 
Sutang (157th mile) bridges. The direction of the shock was not 
apparent from damage done to the Doloi and Manu bridges, but in 
the case of the Sutang bridge the shock seems to have been approxi- 
mately east and west. Piers ?»!os. 3 and 4 were cracked through 
below flood-level, and the girders over them showed a movement 
