The Detroit times., 1911-02-23

20 9Sss ssnsin eic.eoo, 'S soanas.
- bIooko shall Be made solid Tor
I'D Inn1[ <hIrty-sIx 1t) inches be-
I6w oD6 twenty-four (z) Inches
- either eide 81 the girdsrs. beams
~ PIERS AND BurrREss-
~ All piers and buttresses that
tons shall Be built OF solid con-
crate biockg from the foundation
~ % the point or Application OK
+ n concrsts linfels ana siiis. shall
b reinforced by iron or steel rods
A IA = manner satisfactory 20 the
Department OF Brildings. and any
sear as fsst ak sD inches in the
clear shall rest on solid concrete
Blocks OF solid wall
Sec. TESTS NO concrets
building blocks shall be used in the ne
4 City OF Detroit. unless the malsr
of the said blocks shall have sub
mittcd his product 70 the full test
required by the Department OF
plldins snd uIlss, sad test st. shall
a aaxs ss1 Of the department. Depart ss Of
Buildings. All. samples for testing
shall be taken from such blocks
acruaIly going into construction
See 10 TESTS TO BE AS RE-
odiRED HEREIN. The manufac-
turers or users of concrete blocks
or either OF them. on request from
< the Department OF Buildings. shall
"a any and all times. have tests
made Of the cement used In making
such blocks or further tests OF the
completed blocks. At their own ex-
panse and under the. supervision
81 the Department OF Buildings.
prevails. No certificate OF APP
proval on cement blocks. by the
Department. OF Buildings. shall be
considered In force more than six
!" See %1 IL. BRANDING REQUIRED.
rhs brand or mark OF identifica-
tion must be impressed In or other
Z Wise permanently attached to each
sec. IL. CONDEMNED BLOCKS.
Any and all blocks. samples or
Which on being tested under the
Buildings, fan 10 stand at twenty
eight. (28) days. the test required
~ this Ordinance. shall be marked
NCondemned- by the manufacturer
or user and shall be DESTROYED.
8.
WxNUEACTURE OR SALE OF.
Within sixty days from the pas
4 oage OF this ordinance every person.
6xm or corporation engaged In the
uanufact,fre or sale or concrets
Z blocks. shall Be required 20 obtain
lissnss from the Mayor, - The Ir,r sp,
blanks furnished by the Department
OF Buildings and be accompanied BY
q Tee OF $500. The license. IL Is
sued. shall be from the first day OF
June In each year and shall be for
= psriod OF not less than one year
Sec; is; CAUSES FOR WHICH
Any. license may be revoked by the
Mayor for any OF the following
causes: wflful violation OF any OF
the specifications, laws and ordi-
nnnces. dishonest methods: use OF
snx hcense the Mayor shall give
no(loe to the licensee and 10 the De-
partment OF Buildings or his inten-
ton and permit the Hcensee TO be
heard In his defense.
ARTICLE Nv.
Sec. /. EXCAVATIONS. All ex-
cavations for buildings shall be
properly guarded and protected.
against danger TO life. or property.
Sec. 2. EXCAVATIONS BELOW
TO0TING6. Excavations in any
building for the foundation Of any
DC or any kind. or for tunnel or
Tor any sewer. water or other pipe
line, shall not be dug below the bot
tom OF the footings OF any founda-
ton wall or pier, when such excava-
tion extends within one foot Oh or
the angle Of repose or natural slope
of the foundation soil under the
foofingn. unless such footings are
1lfst under pinned. or otherwise
proporiy protected against settle
fnent during the progress Of the
Sc. 3. BEARING CAPACITY
OF SOILS. Different soils. exciud-
Ing loam. black soil. and mud. at the
4 bottom Of the footings. shall DO
deemed 20 safely sustain the follow
Ing loads to the superficial foot.
namely:
Ordinary clay and sand together
IN layers. wet and springy. two (D
tons per square foot.
Clay or fine sand. frm and dry.
three '(3) tons per square foot
Very frm coarse sand. stin gravel,
OF hard clay four (4J tons per
. square foot
Sec. 4. PRESSURE UNDER
FOOTING OF FOUNDATION. The
loads exerting pressure under the
4 footfngs Of foundations In buildings
more than three (3) stories In height
For warehouses and factories. the
fun dead load and 1875 OF the live
IN stores and buildings used for
light manufacturing purposes the
full dead load and 7ob OF the live
In churches. schooIhouses and
4. places OF public amusement or as
senbly. the full dead load and 70a
of the live load.
In ofrics buildings. hotels. dwell
1ngs. apartment houses. tenement
the fun dead load and sos Of the
Tootings shall be designed 20 that
me loads VIII be as Uniform az pos
i olble, and not IN excess OF the safe
bearing capacity OF the soil az es-
tablished By Section . Of this Arti-
Variations from the above re-
( quiyements may be had only on spe-
ciaI and written permission Of the
Department OF Buildings.
Sec. 5. FOUNDATIONS. No foun-
dation wall shall be built upon
black sol. No foundation wall
cspt for frame buildings not over
tions shall be proportioned for the
actual average load they will
carry In the completed and occu-
-pfed building. and shall be carried
down to sand. gravel. hard clay or
rock. except whore piles are used.
Every building within the City
Limits except sheds. and except
frame buildings not over twenty
6 Gve (16) feet high from sill TO
plate. shall have foundations OF
brick. stone, iron, steel or concrete
laid on solid ground. or upon piles
esrtb 81 reck r. nor founs sh soha
Sheds and franc buildings not
over twenty-five (25) feet high
from sill to plate may be set on
cedar posts or on isolated masonry
piers not less than IL Inches by