249 Perc Tests Lie•linatem System,tie amt.= e....-_-.-_ .
cessary and the test can be made after the water from one fill-
y has
rco align ato measurements should be made on the day fol-
wPercole at
�ugtl(e saturation process. except in sandy sods.
0 water remains in the test hole after overnight saturation, ad-
st the depth to 6 inches over the gravel. From a fixed reference
int, measure the drop in water level at approximately 30-minute
ral 30-minute neriod period.
od isused o cal during
calculate the percolationrate.s
est Hole Nicol aeon
_2 i L ...J
3 0 " 4J
4 1 „ 19
5 c H yv
6 0 it 15
7 0 ° }7
9 L7 n l )
9 1 It 23
-
10 w
" JS
bottom equalsthis figure plusone ..em --
drop during the final 30-minute period.
7. In sandy soils, or other soils in which the first six inches of
water seeps away in leas than 30 minutes, after the overnight sat-
uration period, the time interval between measurements can be taken
as IO minutes and the test nun over period is of one hour. The drop
which occurs in the final 10 minute dis used to calculate the
percolation rate.
TABLE 1 - PERCOLATION RATE (RECORD RATE IN MINUTES PER INCH)
Percolation Test Hai. Percolation
Test Hole Percolation Te st Hole P _
Sec . 11 3 k tn .44 sec . 21 a to 52S6C _ 31 0 " 53 lec�
12 " 47 " 22 2 n 2l7 1 33 ,1 ti "
13 `. " 50 n 23 1 v4 - -
14
�t 29 " - 24 1 "
n 15 0 't 27 .1 25 1 "
•,
16 1 24 r 26 1 n
17 7 't 04 " 27 1 n
18 2 n 27 28 6
19 1 't 1.) II 29 - 52 n
20 1 n 07 30 6
30 4 34 . _. .. -
09 " 35
12 " 36
23 " 37 , _
37 " 38 .
00 " 39 ,
52 " 40
TABLE 11 - SUBSOIL. DATA(GIVE TO A DEPTH OF AT LEAST 6 FT.)
NOTE: Description of soil by Unified Soil Classification system Is preferred. When ground water Is encountered, use
last line to record depth at each hole. Hole 1 ast• Hale e
Depth Test H.I. 1 Teat Hole 2 Teas Hole 3 Lore 4 - .st Hot. 5 'Lori- 1.6_ ..t fI 7 ---.LSffi�
0.5 ' t'. sand Loan Lori __ ! sand t sand
ant,; ravel .--' -. -
t ,� t shat^) . - •t . ` ft -ravel .
son d,T,• sand- ___ —_
,ss n n
n 1C2 at_2.5 11 sandy u n n
2. 5 p n travel - n _ _sand, y.... 1,_ —� n
c� n - rd,.i tt' .T Ln:>rse- b-- 11 __ cls '___r _— n
, ., •� _ send .-_glees-, . _ _. -- __. — 11 n 1 11
E D „ - n- 1 _se¢d s-E ..£1@T=-Sl-a 'e -:n52sE 4.0
Ground Water 1 trac� 5.t_ 6.0
G.aued water
FHA FORM 2084c
VA FORM 26-1888
(Part 11 is continued on Reverse)
SUBDIVISION SEWAGE DISPOSAL REPORT
iGW, GP, SW, or SP classified according to the "Unified Soils 30-minute reading. determine from the previous reading the water
Cle•6Vic•tion System'', the above saturation procedure is not level drop during thei interval. Add water until the level above the
necessary and the test can be made after the water from one fill- bottom equals tine figure plus one half inch. Continue, measure
Log has seeped away. drop during the final 30-minute period.
4. Percolation rate measurements should be made on the day fol- T. In sandy soils, or other soil. in which the first six Inches of
lowing the saturation process. except in sandy soils. water seeps away in less than 30 minutes, after the overnight sat-
uration
water remains bathe teat hole after overnight saturation, ad-
a• period, the time interval between measurements can betaken
S
a• 10 minutes end the test run over•period of one hour. The drop
lust the depth to 6 inches over the gravel. From a fixed reference which occurs in the final 10 minute period 1s used to calculate the
Point. measure the drop in water level at approximately 30-minute percolation rate.
intervals over•4 hour period. The drop which occurs during the
final 30-minute period is used to calculate the percolation rate.
TABLE 1- PERCOLATION RATE (RECORD RATE IN MINUTES PER INCH)
Teat Holt Percolation i Tot Hol.l Percolation iTest Hell Percolation Tot Heller
Porcelains
1 71 } 21 31
2 12 —1—
t 22 32
3 1 13 23 1 + 33
4 14 24 34
5 1 2
6 16 26
r.. 36
T 1y y 2y 37
8 78 28
9 r 19 Jt r 29 [ 39
10 1 20 1 I 30 1 40 :
TABLE 11 - SUBSOIL DATA(GIVE TO A DEPTH OF AT LEAST 6 FT.)
NOTE: Description of soil by Unified So 1 ClfSsfilcatiOn system is preferred. When ground water is encountered, use
(Part 11 is continued on Reverse)
FHA FORM 2084t
VA FORM 26•1888
SUBDIVISION SEWAGE DISPOSAL REPORT
roteat 4& `ft 2 et
/18az d',ft -2an.elf
Depth
•`Test HoI.
Tot Hal./e Tan Hob ♦fib
Tot He1.1Z
Loam
Tot Hole 12l
Loam
Tot Hole 6
Test H.P.7
Tot H.P.8
Loan.
Loam
travel
n
1.0 Ft
L
sand 1 sand
��
sand
—w
, sand
2.5 wry
,r
..
3.0 " , T n
n
It
t e
4.0 " sandy "
n
- ---
--
ii
5.0 "
/"ravel I n
tt
n
6 .0 n
n
Gray
5 Ft.
t n
1
•
2.5
1
q
Distance to -
GrepdWc•. 5 Ft.
5 Ft.
(Part 11 is continued on Reverse)
FHA FORM 2084t
VA FORM 26•1888
SUBDIVISION SEWAGE DISPOSAL REPORT
roteat 4& `ft 2 et
/18az d',ft -2an.elf