Examination of Installations of Korko (Sawdust Cement) Masonry Units

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Publisher’s version / Version de l'éditeur:

Technical Note (National Research Council of Canada. Division of Building Research), 1951-07-04

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Examination of Installations of Korko (Sawdust Cement) Masonry Units Ritchie, T.

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NATIONAL RESEARCH COUNCIL DIVISION OF BUILDING ｾｅａｒｃｈ

TECHIfI0.4& NOTE 10. 10k. Prepareel bIT. R1'.hle .

'RRroYK bl

Robert JP. Legget

ｄＮｾＡ JUly

4,

19,5l.

ｾ

&'-....

"1 amall buildlnp eNcted in the Otta. area,

the exterior walla

ot

1IIhloh .ere oonatructec.t ot a.wuat-oement maaon17 unita, lIere examined on MaJl'Oh 29, 1951, and re-examined on June 19, 1951, This report deals with the obserYQtlona made during the exa:ll1natlon

ot

the bUl1d1nga on June 19.

1.

315

Montfort st" EaatYlev

S11ght hor1.ontal or_cka were obaeryad on tbe veat wall Dear the north-west corner ot the houae. There were no other apparent ohange. in the oond1tion

ot

the building ainoe tn. previoua eX&$ination.

2, __1 Levi.

st.

ButYle"

Thla houae is In the aame W1tln1ahed atate u when prevlousl, vla1te4, and 18 8t111 uno.oup1ed.

A part

ot

the eaat 11allot thia bUilding is shown

1n the photograph In Flgure 1. Bat.nai.... oracking between the masonry u..'tlita and mortar a.re eYI4.nt.

(3)

,,"

-

•

Pigure 1.

The crackIng between ltork. un!t s and mortar 1. mown 1n the close-up photograph 1n Plgure 2. which show. a part ot

the same wall && 1n 1'1gure 1. •

J'laun a.

ＱＱＬＡＡＡＺＭｰＮｾ

...,

1IaU

otJ!!!•••,

au Len,

IlU·'

(4)

(5)

,

•

'e

.3

-The tront wall ot this house i. shown in Figure

3.

Plgure

3.

Front Wall ot Hous. at

411

Levi. ｳｴｲ･ｾ

3.

360

Levis Street E,stYiew

• Tbi.

garage was observed trom the streetJ no change

8ince ｴｨｾ previous visit was seen. The &hap•• ot the blocks

were, discernible beneath the rendering.

Ｔｾ Hetcalte

Road at

R.searoh Roa4.

The occupant

ot

this house said that ownership

ot

ｾｨ･ｰｬ｡ｯｾ cbaD8ed about two weeks ago. 'lbe tormer owner. Mr.

Meloche. 1s constructing a st.ilar house ot Eorke blocks at

Baint. Rose de Lble, Gatineau, P.Q. according to the. ocoupant

ot the house on Metcalte Road.

The house 1s in the ...e eond.ition. apparentl,- as

when prevlous17 visited. The tront ot the building is shown

(6)

I

(7)

J ..

ｾ

__

ｾ

_ _

ＭＮ［［［ＭＺＺＮＮＮＮＮｨＮＬ｟Ｍｾ

__

- - - = - , : , - , - _

s.

Bove.Yl11e gomer.

!he two house. or Korte blocks whlch were en.luet oDlCaroh 27. in thi. area, haT. slnoe be.a re.oyec1 1n the

expanslon or tJplancls A1rport.

In the peri04 b.""••n .sualnatlons, DO oha.p va•

(8)

• " ·•

"

•

(9)

(M.t

""- •

［Ｈｾｾ

, .

7; .L..-'c.J..tl,-'

,,,

lfl. ;-'- .. .."... ｹｾＮＩ

REfOR't

Qft

IHE lWID!AUQ!

QF ＡｾﾧＱｾｬｴｌａｔｉｑＮﾧ

or

lQUQ

(SAWDUST-OFJ1El'l') ｍａｾｏｈｒｙ tJRIT§

Mr.

M. Debroy, IllAnager

ot

the local Korto tactory at

Bil11ngs Bridge, supplied addre.sea and other particularsat

instal-lations of Korko Awduat-c.ent masonry unita, in the OttAwa diatrict,

when

contacted by tel.phone on Maroh

27, 1951. The

tollowing

buildings, which according to

Mr.

Debroy were constructed of Korto

sawdust-cea.nt blocka, were examined on March

29, 1951.

1.

Hous. at

3J.8

Moptfort

St, Ea'tyin.

According to

Mr.

Debroy, thia house

wa.

erect.d in the

aummer of

1950,

the reaidence of Mr.

J. Auger.

It i.

a

single-storey, pitched root (blue shingled).

building, on a rendered concrete block foundation.

The exterior

e

walla

ot

sawdust-cem.nt blocts are rendered with a stucco simulating

yellow brickwork (po.sibly "Brickcot."),

Slight effloreacenc. . . .

seen on all walls or this building, and some areas of the walls

appeared darker than the main part, as it damp.

I

observed only one crack 1n the walla

or

thia building;

ｾｴ

was about

2

teet trom the north-west corner or the building. on

the weat wall, and extended about) te.t v.rtically

from

the

foundation,

The

foundation appeared to have no ••phalt coating between

the rend.ring and the adjoining earth,

2.

Houae at

417 Leyia Street.

Ia'tyi,••

This

bUilding

18 16

storey with unr.ndered concrete blocks

tor the foundation and

ｾｬｬ｡

ot

unrendered sawdust-cement blocks.

(10)

·,

2

-('1'hOllpaon Agency). Th. building 1. caapl.t.ly enoloaed, but the

chtaD.y on

th.

north

ald.

1s not

y.t caapl.ted.

The _11., ot

aarend.rec1

aawust-c_ent blooks,

re.t

on an

unrendered concrete .block toundatlon

which

ria•• about .3 te.t

abo••

grad. on the ....t .1d.. Th. lintel. and aill. are appar.ntly

eaat-In-place concret••

.All walla

ot

thi8 building are baclly oraoked, the crack•

• xt.nding v.rtically through units and aortar. Th. toudation 1.

alao badly craoked.

Oraok,

between aawdust-e. .

nt

un!t, and aon&r

are very

noticeable

and

.xt.nsiv••

The ..st wall appeared to be conaidGrably bulged Ｎ｢ｯｵｾ balt

way to the top

ot

the wl1.

Th1s building,

trOll

the

ex1;.rior,

s• •a to b. 1n poor shape.

e

Mr. D.broy sald it had

b.en

.reoted in July 1950 •

.3.

•

Thia building, which i, behind the residence of Mr. Aayot,

1, a flat-roofed, double garage. The _lls are

rend.red;

the

render-10

₁ 8 . . . .d to be thin,

tor

the outline of

the

block. beneath it could

b• • •

en.

The front vall 1s cracked in . .ny plac.s abo..e the entrance

door..

The

north wall ia alao crack.d.

4.

HOB"

on

M'tgalt. Road,.

Thi. building

i .

locat.d

on

the aouth

ald. ot the road,

about )00 yards . .,t of Rea.rch Road. It 18 tbe reaid.nc. ot Mr.

P. Meloche. According to Mrs. Meloch. lt was er.cted la.t tall, bat bee very _na throughout the winter, and hae been otb.rwt.e ..err satiataotory.

(11)

II . , ..

It i • • OI1. . .to"7. pitollft-root bUldlDI. oa • r_ct...

cOIlore'e

block toundat1on. fIl. _11. ot . . . . .t-o_ _, b100ka

are

readerecl ill a'.ceo to .1InIla'e yellow wlek-wrk (po••lb1,. wlriok"t.-)t

uoept tor the ..ear

-U

vh10h 1. Wtt1ll1ahed r_der1D&.

I

a. no

orack.

or

otbe..

.ip

of di.tr...

in

the

-u..ot

, thi. tna11dlft1.

!b. oh1JlD.,.. bOveYer, wb.ichi.of .1aUlat" 'briolnlork like

'he relt of the bou.e,

u4

projeet. abo.' • t.o' tI"oIa 'b• •ea' 1Mll,

• • ..ea to be ncb

cU.aoolovecl anel

0'\.a1.ely

cracked.

n i . _ U

bou. 1. of

tairly a'tracti.... apparaDe••

" ,

,"s.

B• • • •S

_'!WI

Corgr••

1'b1. bou.. 1. 1. . .ted 011 tbe . .uth a14. ot the

Na.

'tilde.

ｾＮ join. 8o'wenille Road at Iowenl11e Oomer., abo.' 300 yard. . . .t of

e

ｾ

the

ＱｉｬｴＮｲ｡ＮＨｮｾｬｏｄＮ

It 1s one of aaDy 111 the area to be reaovM IJl

the expans10n of

Upland.

A1rport.

Thi' 1. a larse, uat1Jal.he4 bu11dinl. The WlI"etlcl...

con-crete block toundatio. ri ••• abou' 10 t.e' abo.e

crad.,

aa4 oa thl.

1. the _1a' 111&11

.t

the ftilcling, ot

_.\1I1;..

c• •, blocks. !he

bui141n1 i . act\1&ll, two storey 18 helpt. !he lna1l41A1 baa .0

root.

bu' rough rafter• •

t

u.ed luber, apparently, are 1a ｾ｣･Ｎ

The .all. are "'.ry baelly orackeclJ .1IIo.t all

a1lll1aR-c_.'

)

"-aoarr

\1Illt. are .eparat4Ml troa \he otber. b1onek••

!he . a t _11 (abo.a tba fowuSation) 1. cOIla14....blr bUll_.

!hi.

bul1d1q !apr••aM •••• being

in-"err

poor ahape; 1t •••_ • tort\1D&t. oec,,",_.a tbat it 1. u be tak. do....

Sola. broken ....su.t-o__t bloek. 1J1n1 .Nllt 1D the • •".,

e

lc. and water, "are

.s11r

brook_

Dr

the

toot and •••e4 to ba Melly

(12)

4

-6.

H

ou"

OR

JJareut

AIIP". S-2

nt _{S)&bunsOp. gMt} ｂｯｄｾ

GornlE',

Thia hou•• ia to b. reaoved, in th. expanaioll ot Uplanela

Airport.

It

ia Wlfl1l1ahed, but baa b••D .noloaeel by walla and root

but not by windowa. It 1. a oD••ator.y boua. w1t1\ walla ot urenclered

_.u.t-e_ent

block, OD a concr.t. block foundation. Th. IDterlor

i . pla.ter-baa. be:-rdecl, but unplaat..r.d. Wiring baa

b..

1natalled.

By.ry _.uat-c• •nt block 1n the _11. ot thi. b\tl14ing

a. . .4 to b•••pant.d.

tro.

th.

oth.r. by cracka.

Th. north wall appearecl to b. bulgN.

Two

ot

the three renel.red bUilding! which

"1'"

QUlin_

appeared. to b. in good conditioll.

Th. wall, of the \UlI"end.recl btiildiq. whlch

.'1'"

ua.1n.cl

weI'" extensiy.ly crack.el, and 011. wall of eacb

. a a••

to b.

lnucld.

It would .... advisabl. that exterior _lla

ot

aawdaat-c• •nt block. b. rend.red aa lOon att.r conaUUctioD .a poaalb1" anel.

alao. ｾ

£Oor

ov.r the _11, .a HOD aa po.aibl.,

All the \Nild.1nga .X'Ul1ned ar. r.lat1yely

ft_.

hnher

.xaminationa, _d. at

the

end of

the

apriDI

rain.,

and per1ocU.cally

th.reaftert 'ft)uld b. of value in determining

the

p.rtol'Mllc, ot the

ut.riale uaeel.