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Technical Note (National Research Council of Canada. Division of Building Research), 1952-12-10
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..
DIVISION OF BUILDING RESEARCH
NATIONAL RESEARCH COUNCIL OF CANADA
e·
'f
EClHIN ][CAIL
NOTlE
No.
116
NOT FOR PUBLICATION
PREPARED BY C.R. Crock l" CHECKED BY
FOR INTERNAL USE
APPROVED BY
R.F.L.
PREPARED FOR DATE
Deo.
10, 19.$2SUBJECT ep rt
ot
Vi8itt _
theReald.noe
ot
Mr.
I.
0 anSmlth,
16 acKinnon ltd.I Rock 11,(1'e
e.
On the lIo..-n1ns
ot
Novemb.r24 ..
gl'Otlp tp01'l1 the DIvi8ion 01 Building r・XNセ」ィ vi8ited theho.
t
Mr. I.orman
Ith tox
in. theba....nt
floor.Th.
group consi.tedot
ea81'8.
Colllol,
Croek.r, Ed n,
." arm an
Swn n.Th6 houa. valoon
tpuotect
about 2$,.ear.
ago. It. 1of
brlok
construction retlng
on ..monolithio
CohC1'.t. toundation.h
tloor10
the _ aaent1
conc. .te resting directly on •
ahaley 11 tone •. It 1 of intereat t note that セィ • .floor vaa
ーャ。セN、 aft l' ao 01' th
tnt••
tor partition. had been inatalled.The conoret. tloor- vas damp in spote 1.1 though no
r,.••
vatel" vas .1al 18. At a n 87 01' place ; a "t1ne fungus-likegrowth w
a
tob. . een on
the
surf" ce
"t tconorete.
'1hia
8""th re ch.d a d.pthot
b• ..,..n two 8nd thr.e ino • in the セN。N 08tfavourabl to its grovth. Samples
ot
thi8 grovth . .r obta1De4and on .xamln tton in the laboratory ....1'. tOWld to .be alkali
8ulphate cr18tala.
lsture to UPPOiltt thl SJtOv1;h 1. comin8 lrollt beloW the
floo%' and 1 drawn to th urtace 1)7 wlck!ng
act1on.
t tvo loc 10ns in the base nt, attempt.
_1'.
lila • toobtaJ.n 2-inc oore. he concrete va.
or
8uoh poor quality that only on. pal"tieJ. 00 "a obtained. compr8 slon t ••t coul notbe madebecall..
or
the conditt not
the 00 a but it 11 .at1matedthat
the
att-ength rang.d tl'M onl a'te"
p.a.1.to
abollt $00 p.s"l.The
hole veN.xatn1ned
24
hours aftercb-lll1ng m4 while
dthe-r. waa no water viaibl••
The aoll to the south
or
tbe
bo •• , in lIh1 h the -4)- instram
the a ptlc tank are plaoed. 1s a 8ilty sanel with ao01' ant ter1al' sussesting tbat it lIJq b till ut81'1al. :It
1a
ina re1at1.817
1008.atate and
1. uite pervious totbe
.2
-ecau •
ot
the
poor quality of th ooncrete, no surta •treatm nt an be NOO nded
tor
the b e n tloor. U the lowbe dPoo . can b tolerat d, then a new tloor oan placed o-v r the xi.ting tlo
r.
A d -pro01' ran oon 1 t1ngot
asphaltand a h avy oting p r hould be pI ed on the exl t tloor.
It the eXisting b adroo ust be r tained, the exi t1ng
tloor
uat
b 1"m v
dand
ne. tloor installed. damp-proofbl'"Bn hould b placed under t • n 11 1."1001'.
In .
it
r oa e, . n tloor us b a e with goアオ。ャャセ aterlal., properlY plao d and cセ d.
The application
ot
.
aphalt or pItch utlc t1 or1nsto the eXisting urt"ao h b en oonald.ped but w know
ot
nocontractor in thi area f l11ar wIth ita tnstallatlon.
b
to
ba n were in posltlo • Th wood 'b low the 1'10 1"
till acts a a wi k to draw PartItions installed at a sting 1 ot11 n the tl 0 •
natur
ot
the con r te, 01 tur 1& c1l'avnoak1ng th d in the partition.
U8ty
11.
.
W n t tloor is r pair d, t
be
cut
ofr at tini d tloor 1 el d The 10 . :Jt plaot
the par Itlon haulp albl11tJ:r al.
old partt ton. shoul
n W low l ' plate