Soil Testing at Prince Charles School, London, Ontario

(1)

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Soil Testing at Prince Charles School, London, Ontario

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N A T I O N A L

RESEARCH

C O U N C I L CANADA

S O I L T 3 S T I N G AT PHTMCE CHASLES

SCHOOL,

LONDON,

ONTAR

I0

by C . B. C r a w f o r d ( P r e ~ a r e d . for D r . A .

D.

~ i s e n e r ) N O T F O R P T T E L I C A T I O

N

R e p o r t No.

44

o f t h e D i v i s i o n of B u i l d i n g Re s e a r c h O t t a w a S e p t e m b e r

1954

(3)

The D i v i s i o n of B u i l d i n g Research 1s f o r t u n a t e

i n t h e co-operation it h a s developed w i t h t h e U n i v e r s i t i e s

of Canada.

One of t h e s e most s a t i s f a c t o r y l i n k s

i s

w i t h

t h e U n i v e r s i t y of Western Ontario, t h e D i v i s i o n havlng suppo-tee

f i n a n c i a l l y f o r some time s t u d i e s of'

D r . A.D.

Misener (Head cf

t h e Department of Physics,

U.W.O.)

i n t o t h e o p e r a t i o n of c e r t ~ l n

b u i l d i n g s i n London and o t h e r thermal i n v e s t i g a t i o n s .

I n connection w i t h t h e o b s e r v a t i o n s of

D r .

Misener

on t h e Prince Charles School which has a r a d i a n t f l o o r p a n e l

h e a t i n g system, t h e D i v i s i o n

was

g l a d t o a r r a n g e f o r members

of

i t s

S o i l Mechanics S e c t i o n t o carlyy o u t c e r t a i n s o i l t e s t s

a d j a c e n t t o t h i s School i n o r d e r t o provide

D r . Misensr with

e s s e n t i a l information f o r h i s h e a t f l o ~ j

r e s e a r c h .

This r e p o r t p r e s e n t s t h e r e s u l t s of' t h e s e f i z L d

s t u d i e s . It has t e e n prepared

by M r . C . B.

Crawford who

i s

t h e Head of t h e S a i l Nechanics S e c t i o n of

t h e

D i v i s i o n ,

O t t a w a ,

(4)

SOIL

TESTING

AT

PRINCE

CHARLES SCHOOL,

--

-- LONDOTJ, ONTARIO

-

.-

--

b y C . 8 . C r a w f o r d T h i s s h o r t 1 3 e ~ o ~ t d e s c r l b e s t h e r e s u l t s o f s t u d i e s o f d e n s i t y a n d w a t e r c o n t e n t v a r i a t i o n o f t h e s o i l a r o u n d t h e P r i n c e C h 2 r l o s S c h o o l , London, O n t a r i o , o n J u l y 2 1 ,

19Sk.

T h i s s c h o o l , h a v i n g a r a d i - a n t f l o o r p a n e l h e a t i n g s y s t e m , i s one o f two i n t h e London a r e a rfhEch h a v e b e e n u n d e r s t u d y b y D r . A . D . M i s e n e r o f t h e U n i v e r s i t y o f Inrestern O n t a r i o w i t h s u p p o r t f r o m t h e D i v i s i o n o f B u i l d i n g R e s e a r c h . I O b s e r v a t i o n s of' t e m p e r a t u r e h a v e b e e n made o v e r s e v e r a l y e a r s t o a s q i s t i n e s t a b l i s h i n g t h e h e a t l o s s e s t o g r o u n d a n d t h e p a t t e r n o f g r o u n d t e m p e r a t u r e s u n d e r b u i l d i n g s w i t h h e a t e d f l o o r s . The s o i l s t u d i e s r e p o r t e d h e r e w e r e c a r r i e d o u t by t h e S o i l M s c h a n i c s S e c t i o n o f t h e D i v i s i o n t o p r o v i d e i n f o r m a t i o n n e c e s s a r y f o r e s t a b l i s h i n g t h e t h e r m a l p r o p e r t i e s o f t h e s o i l . 2 . T e s t R e s u l t s A s p e c i a l t e s t p i t f e e t w i d e a n d

6

f e e t l o n g w i t h s t e p s c u t a t d e p t h s o f 2 ,

2 ,

a n d

6

f e e t was p r e p a r e d o n J u l y 2 0 . T h i s p i t p e r m i t t e d a c o n v e n i e n t d e t e r m i n a t i o n o f t h r e e d e n s i t y t e s t s a t e a c h o f t h e t h r e e d e p t h s . F i g u r e 1 shows t h e a p p r o x i m a t e l o c a t i o n o f t h e t e s t p i t a n d t h e l o c a - t i o n o f e a c h d e n s i t y t e s t i n t h e p i t . F i g u r e 2 shows t h e p r o - f i l e o f w a t e r c o n t e n t v a r i a t i o n a n d a d e s c r i p t i o n o f t h e s o i l . V a l u e s f o r w e t d e n s i t y , w a t e r c o n t e n t , a n d d r y d e n s i t y a r e i v e n i n T a b l e I . I t w i l l be n o t i c e d t h a t a d e p t h s o f 2 a n d

t

f e e t t h e d e n s i t y a t t h e w e s t s i d e o f t h e p i t is s i g n i f i c a n t l y l e s s t h a n a t t h e e a s t s i d e o f t h e p i t . I t s h o u l d be p o i n t e d o u t t h a t t h i s d i f f e r e n c e i s n o t e n t i r e l y d u e t o t e s t e r r o r s s i n c e i t was n o t i c e d i n t h e f i e l d t h a t t h e m a t e r i a l on t h e w e s t s i d e o f t h e p i t was d e f i n i t e l y l e s s d e n s e t h a n t h a t on t h e e a s t s i d e . The a v e r a g e v a l u e s w i l l p r o b a b l y g i v e a good i n d i c a t i o n o f t h e d e n s i t y a t , t h e s e two d e p t h s . A t t h e & - f o o t , d e p t h t e s t s i n d i c a t e a r e a s o n a b l y u n i f o r m d e n s i t y . No d o u b t t r a m p i n g on t h e s u r f a c e b o t h d u r i n g e x c a v a ~ i o n a n d d u r i n g t e s t i n g w o u l d h a v e some e f f e c t o n t h e d e n s l t y , p a r t i c u l a r 1 y a t t h e 6 - f o o t d e p t h w h e r e t h e i n i t i a l d e n s i t y was s l t g h t l y l o w e r t h a n a t o t h e r d e p t h s a n d w h e r e t h e m a t e r i a l i s a damp s a n d p a r t i c u l a r l y c o n d u c i v e t o c o m p z c t i o n .

(5)

TABLE I

SOIL DENSYTY TE:STS TAKE$: I N TEST PIT NORTH OP PRINCE CEARLES SCHOOL LONDON, O N T A Y I O , JUL'Y 21,

1954

---

--

- . .--.--- _I -Depth 2 f e e t I

4

f e e t !

I

6

f e e t

----

-

--.

5

6

I T e s t No.

9

3

4

8 1 1 2

7

I

i

---

--- !

---

---y--

v --+----

-

Vis t d e n s i Ly ( l b / f t 3 ) 1 1 2 1 . ) ~ I 1132.0' I 131.11 , I

t---

1 --

I Water

₁

9 . 9 '

11.7

9.6)

c o n t e n t

( y ) '

I

! !

I

I ,

1

! Dry d e n s i t y I ( l b I f t - 3 )

/110.6:119.0:119.8(87.5!109.7,111.4j

I ! 9 7 . 5 ' I 95.0i103.8 I I

A i m R A G E OF

3

TESTS AT EACH DEPTH ---

1 2 f e t 3 t -

.--- Depth

I

4

f e e t

6

f e e t i Wet d e n s i t y ---. .---. .-

-

---3-

.--- Water c o n t e n t

i

10.4

I

1.0.8 ---I

I

16.5 I

I ----.--

-

--

. -1-- .

-

----.---.-- 1-

-.----..---.

Dry d e n s i t y

1

116 - 5

I

I 1.02

.9

1

91.8 i

(6)

Two a u g e r b o - i n g s were made, t h e f i r s t s o u t h of t h e e a s t w i n g a n d t h e s e c o n d s o u t h o f t h e w e s t w i c g o f t h e s c h o o l . The d e s c r i p t i o n o f t h e s o 4 1 arlcl t h e w a t e r c o r d s e n t p r o l ' j - l e Tor t h e f i r s t S o r i n g i s showr; i n F i g ,

3

a n d f o r t.1-le s e c o n d tclor5.n~ i n F i g L . The s o i l d e s c r i p t f o n s I n d i . c a t e t h a t t h e m a t e r i a l i s

r e a s o n a b l y u n i f o r m a c r o s s t h e s i t e , B o t h b o r i n g s were d i s c o n - t i n u e d a t r a t h e r s h a l l o w d e p t h s dim t o t l i e p r e s e n c e o f s t o n e s . I n t;he f i r s t b o r i n g , t h e w a t e r t,abl.e was n o t r e a c h e d b u t i n t h e s e c o v d b o r i n g f r e e w a t e r was e n c o u n t a r e d a t a h o u t 7 , 2 f e e t .

lirrater c o n t e n t v a l u e s w e r e f o u n d t o val-g o v ~ r a c o n s i d e r a b l e r a n g e .

These v a l u e s a r e shown i n l'ab1.e 11. An a t t e m p t was made, i n draw in^: t.,:no w a t e r c o ~ t e n t p r o f i l e s i n F i g s .

3

ancl

b,

t,c: e s t i m a t e $he p r o b a b l y w a t e r c o n t e n t d l s t r j l ~ u t i o n ii~i.t,h d e p t h , 11; i s

t h o u g h t t h a t t hc! e f f e c t cf' recen.i;-:r r a i n f a l l h a s riot g e t a p r ~ r o s c h e d e c ; ; ~ i l i b r i u m a n d t h a t t h i s a c c o u n t s f o r t h e h i g h w a t e r c o n t e n t a t t h e t o

4

1 / 2 - f o o t d e p t h s i n F i g .

3.

T h i s w a t e r p r e s u ~ l a b l y i s b e i n g h e l d i n t h e s a n d S y tkie more i m p e r v i o u s c l a y s i l t bsgT-~l;?fng a t t h e -5-foot d e p t h . The n r o f i l e shown i n F'ig.

4

i s more d i f f i- c u l t t o e x p l a i n b u t i t i s l i k e l y t h a t v a r i a t i o n s i n p e l - m e a b i l i t y a c c o u n t f o r t h e v a r i a t i o n i n w a t e r c 0 n t e n . t .

I n v i e w of t h e s r l p i . f i c a n t v a r i a t i o r l i n w a t e r c o n t e n t , a n d t h 6 a p : ; ) a r e n t e f f e c t o f r e c e n t r a i n f a l l , i t i s t h o u g h t t h a t ; f u r t h e r b o r l n g s and w a t e r c o n t e n t t o s % s a r e n e c e s s a r y i.n 0i"3~?i' .to d e t e r n - mine a v e r a g e w a t e r c o n d i t i o n s a n d i t s s e a s o n a l . v a r i a t i o n .

TABLE

I1

WATER CONTZNT OF' B O R I N G SAIhPLES

.-.

---

D e p t h B o r i n g Number

( f t )

1 2

(7)

L v '1. i @ a c l 4 k k (D D b

-

a

t- (n ' - d I-

z

U-I I- d I-

>

I I -

-

cn

5 < a

0 1 0

-

-4

@.-

1 I

~

I 4

u

0 -1

a

Z

-

2 a

k I1 x h

0 _z

Q

0

h

-

Ll. (3 0 2 ₂ I

=

-1 CL

0 .

_'+

II 3 h F

@

W C L. \ Q. t.. v, Y h

@

't I1

x

C, 9

2

0

8 -

-

₀ , a i _--

_z

_-

I IY 0 dl 0

-

I-

d

0 0 L) 0

Q

X ₀

Q

[Y

a

fl

a

4 2

0 a d l 0

1 ,

o <

I-

-

G. t- ln I d d t - W -I 4 L v, D 1. k.

2

'c F 4 tY \3

:

Ql Q.

z

-

Z

a

1 d 0 13 I / A 0 0 P4 0 2

4

A

-

,a9

m

a

6 1

-

0 2

-

U 0 dl

m

LL

(8)

I

P R O J E C T :

2

3 ₁_T_E_{:Prime Char!es}_{Schoo/ London,}_Ont._{D A T E}_{: Ju/u} _2/,₁₉₅₄

i i O L E NO. Tes? P / t L O C A T I O N : North of School D E P T H : 0 - 6 '

ELEVATION OF GROUND ~ U R F A C E (ZERO DEPTH):

I

R E M A R K S : Wafer confenis shown are averages for each depth, found in density fesfs

I

S O I L S A M P L E D E S C R I P T l O N PROFILE .-DEPTH OF S O I L Tops oi/ 0 Lrandu/gr f d l , ma/nly /

fine sand with ssfnes

up to ~obout

2'

2

L I

and some day

-

,

+

-1- 1 _,+.-

t

I , t

Clean brown t/nc sand ' _---i

_{T - i ~ $ j f i ~ ~ ~ ~ ~ ~ ~ ~ i $ ~}

_{, + -}

I-TT-;;

7 , ' .

t-ij.$-lj

1 F I G U R E

2

BORING B Y : f8~. and.46. D A T E : P L O T T E D B Y : A h . D A T E : CHECKED B Y : L / . L D A T E : Sol L MECHANICS L A B O R A T O R Y D I V I S I O N OF B U I L D I N G RESEARCH N A T I O N A L RESEARCH C O U N C l L OTTAWA CANADA b . b . R . R E P O R T d d

(9)

T E S T

H O L E L O G

P R O J E C T :

1

S I T E : Pr Lhn/es 5~h80/ London, OM. D A T E : Ju/y

2/,

/954

H O L E NO.

!

L O C A T I O N : 7 0 ~ ~ . d ~ . w i n ~ f 8 0 ' f d ~ c u i i t g D E P T H :

0-6'

E L E V A T I O N OF GROUND SURFACE ( Z E R O DEPTH) : A ~ O U ~ 2%' ~ C / O U / / O O ~ s/=b

M E T H O D O F A D V A N C I N G H O L E : / ! + ' ~ u ~ e r

- --

R E M A R K 3 : Due fo s ? o ~ ? ~ s , b o n n y advancement ua6 stopped o f 6 1- 0

"

S O l L PROFll

S A M P L E D E S C R I P T l O N 3 O F S O I L

B/acK, fine s / ' / t y sand

Brown,

clayey, .Cine sand

k

W W

L

Very brorvn sand,

_-

some s / / t .

Very un//ortn f i e sand

Lozrse sand

F I G U R E .

3 I

BORING B Y : f B L and46 D A T E : P L O T T E D B Y : A 6 D A T f : CHECKED BY : Ll3.C D A T E : v S O I L MECHAN

ICS

_{L A B O R A T O R Y} D I V I S I O N O F B U I L D I N G R E S E A R C H N A T I O N A L R E S E A R C H C O U N C I L O T T A W A CANADA b D.8. R. IOCPOQT 44 . A , SM F O R M //6

(10)

T E S T

H O L E L O G

P R O J E C T :

I

SITE:Pr/nce Ch~rles S~bool L o n d u n , O n l . ~ ~ T ~ : A / y 2/, l 9 5 4

H O L E NO.

2

LOCATION: 0 0 ' 5 O / I V wing f B O ' I V ~ S L ~ ~ ~ ~ D E P T H : 0.7.3' E L E V A T I O N O F GROUND SURFACE ( Z E R O DEPTH) : A ~ O U I 3:0'be/ow f/w ~ / d b

- - - - -. M E T H O D O F A D V A N C I N G H O L E : / & p ~ u g ~ r

- - -- - - -

R E M A R K S : Refusal uC 7.3 ground u / l l c r i ~ b / e at about

7;

0'

----

S O I L S A M P L E D E S C R I P T l O N ' S O I L

--

BIarK fine si/ty send, ....

some stones

_-

C--

Brown {/he s i / f y sand

+

-

I

Very f i n e brown sand, some s f l d n d clay I --- . . . .- - . . Coarse sand

-

IVeN groded sandy grave/

4

...+

:-..*

L.. ' , I . .

4.i.-

.

:

. . a . . , , f some srlt _ _ 1. , A

_

, . . . , . . . . 1 , 1 ' - ' - . r . . i ; - - - . ~ - - * * . . - FA-~-+ - 4

.'

L -,-. -. . . . . . . . . . . . +. . . . . : . , - . i -

\Ye// g.?adcd s//ty sand

some stones

-

,

, , . . I-+-

Sandy grave/, some si/f

. .

F I G U R E

4

\ \ 4 8OR I N C BY : C S L 2nd A.6. D A T E : P L O T T E D B Y : A&. D A T E : CHECKED BY ; 4 8 ~ . D A T E : n S o l L M E C H A N I C S L A B O R A T O R Y D I V I S I O N OF B U l L D I N C R E S E A R C H N A T I O N A L R E S E A R C H C O U N C I L O f TAWA CANADA I D. d . R . REPORT 4 4 A P ~ / L , ~ / S M F O R M /6 . . . . . .... ... - --. -