The Detroit times., 1911-02-20

/. where the concentrated load en-
$500 ten thousand (t0.000) pounds.
~ blocks shall be made solid for
~ isoat thirty-six (se) inches be-
= sitssr side Of the Orders. beams
Sec PIERS AND BuTTREss-
: ~ All piers and buftresses that
. support loads In excess OF i've CD
. IONS shall be built OF solid con-
, g g the point OF application Of
: Concrete iinteis and sIlls. shall
reinforced by iron or steel rods
IN q manner satisfactory TO the
Department OF Buildings. and any
fonr P fsst six ss) inpehes in o the
clear shall rest on bolid concrete
blocks or solid wall
Sec. 3 TESTS. No concrete
building blocks shall be used In the
construction OF any building In the
OF the said blocks shall have sub
mitted his product to the full test
required by the Department OF
Buildings, and unless said test shall
have satisfactorily passed the re-
ueinsa a sas for tsslns
shall be taken from such blocks
actually going into construction
work
Sec. 10 TESTS TO BE AS RE
CURED HEREIN. The manufao-
Or 9's either 81 OF a's them. on request from
the Department OF Buildings. shall
at 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-
or tho Department OF Buildings.
Sec. IL. TIME LIMIT ON AP-
prevails. No certificate OF APP
prevail on cement blocks. by the
Department OF Buildings. shall be
considered In force more than six
Sec. IL. BRANDING REQUIRED.
The brand or mark or identifioa-
tion must be Impressed in or other
wise permanently attached to each
block
Sec. Is. CONDEMNED BLOCKS.
Any and all blocks. samples OF
direction of the Department OF
Buildings. fail to stand at twenty
eight CAD days. the test required
by this Ordinance. shall be marked
CONDEMNED" by the manufacturer
or user and shall be DESTROYED.
MANUFACTURE OR SALE OF.
Within sixty days from the pas
sage or this ordinance every person.
'flrm or corporation engaged In the
manufacture or sale OF concrete
blocks, shall be required to obtain
q license from the Mayor. The APP
plication shall be made on printed
Of Buildings and be accompanied by
Q Zee OF $500. The license, IL is
sued. shall be from the first day OF
June In each year and shall be for
q period OF not less than one year.
sec. 10. CAUSES FOR WHICH
BEvOCABLE.
Any license may be revoked by the
causes: wilful violation OF any OF
the specifications, laws and ordi-
nances; dishonest methods: use OF
Improper materials. Before revoking
any license the Mayor shall give
notice 20 the licensee and 10 the De-
partment Of Buildings OF his inten-
ton and permit the licensee to be
heard In his defense.
~ ARTICLE XIV. ..
Excavations and Foundations.
Sec. !. EXCAVATIONS. All ex-
'cavations for buildings shall be
properly guarded and protected,
against danger to life. or property;
FooTINGs. Excavations in any
building for the foundation OF any
machinery or for any cistern or any
pit OF any kind. or for q tunnel or
for any sewer, water or other pipe
line. shall not be dug below the bot
tom or the footings OF any founda-
ton wall or pier, when such excava-
the angle OF repose or natural slope
OF the foundation soil under the
footings. unless such footings are
first under-pinned. or otherwise
properly protected against settle
ment during the progress OF the
work.
Sec. 8. BEARING CAPACITY
ing loan. black soil. and mud. at the
bottom OF the footings. shall DO
deemed TO safely sustain the follow
ing loads TO the superficial foot.
namely:
Ordinary clay and sand together
In layers, wet and springy, two CD
tons per square foot.
Clay, or fine sand. firm and dry.
three CD tons per square foot
or hard clay. four 90 tons psr
square foot.
Sec. q. PRESSURE UNDER
FOOTING OF FOUNDATION. The
loads exerting pressure under the
footings OF foundations In buildings
more than three (s) stories In height
are to be computed an follows:
For warehouses and factories. the
full dead load and 7s% OF the live
2 In stores ana buildings used Tor
light manufacturing purposes the
fun dead load and 7o% Of the i've
load. F,
a In churches, schoolhousss ana
places OF public amusement or as
sembly. the full dead load and 70%
" the live load.
In Office buildings. hotsis. dwell
tngs, apartment houses. tenement
houses. lodging houses and stables.
the full dead load and so% Of the
i've load.
Footings shall be designed 30 that
the loads win be az UNIFORM an pos
eible. and not In excess Of the safe
bearing capacity OF the soil an es-
t.bhshed by Section 3 OF this Arti-
Variations from the above re-
Quirements may be had only on spe-
cfal and written permission OF the
Department OF Buildings.
Sec. 5. FOUNDATIONS No foun-
dntfon wall shall be built upon
black soil. No foundation wall
shall be built ON filled ground, ex-
cept for frame buildings not over
lions shall be proportional for the
actual average load they will
carry In the completed and occu-
pied building, and shall be carried
down TO sand, gravel. hard clay or
rock. except where piles are used.
Every building within the City
Limits except sheds. and except
frame buildings not over twenty
hve (26) feet high from sill TO
plate, shall have foundatio OF
brick. stone, iron, steel or concrete
laid on solid ground. or upon piles
or ranging timbers. when solid
sarth or rock II not found.
Sheds and frame 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 II inches by
~ Inches. -
Sec. Q. PILES. Piles may be OF
wood or OF concrete and set by
driving or be moulded Into place,
and they shall be spaced to safely
carry the superimposed load.
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