BS 1377 Part 2 1990
Particle Size Distribution (Hydrometer Sedimentation)
Location
Job Ref:
BH No.
Soil Description
Sample No.
Depth
Test method
BS1377: Part 2:
1990: 9.6
Date
Method of preparation
CALIBRATION AND SAMPLE DA
TA
PRETREATMENT*
Hydrometer no.
Pretreated with
Meniscus correction
C
m
Initial dry mass of sample
mo
g
Reading in dispersant
Ro
Dry mass after pretreatment
m
g
Calibration equation h
r = ..... - ..... Rh
Pretreatment loss
mo-m
g
Dry mass of soil
m
g
%
Particle Density
measured/assumed
*
ps
Mg/m3
D = 0.005531*sqrt(n*Hr)/(ps-1)t
mm
Viscosity of water......
C *
mPa.s
K
=
((100*ps)/(m*(ps-1))/Rd%
TEST DATA
Date
Time
Elapsed Time
t min
Temp. T deg C
Reading Rn'
Rn'+Cm = Rh
Effective depth
Hr mm
Particle diameter D mm
Rh'-Ro' =Rd
Percentage finer than D
K%
*Delete as appropriate
Operator
Checked
Approved
Form 2Q