The Detroit times. [volume] (Detroit, Mich.) 1903-1920, 1910-12-07

sage Of this ordinance every person.
nrm or corporation sneagsd In The
blocks shall be required TO obtain
a license from the Mayor. The APP
phcation shall be made on printed
blanks furnished by the Department
Of Buildings and be accompanied BY
sued. shall be from the frst day OF
June In each year and shall be for
period OF not less than one year.
Sec; IS: CAUSES FOR WHICH
REVOCABLE.
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 10 the licensee and TO the De-
partment OF Buildings OF his inten-
ton and permit the licensee TO be
heard In his defense
ARTICLE XIV.
Excavations and FOunda lions.
Sec. /. EXCAVATIONS. All ex-
cavations for buildings shall be
properly guarded and protected.
against danger TO life. or property.
Sec. 2. EXCAVATIONS BELOW
FooTINGs. Excavations in any
building for the foundation of any
machinery or for any cistern or any
pit OF any kind, or for tunnel or
for 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 excsva.
ton extends within one foot "a OF
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
sec. 8 BEARING CAPACITY
of SOILS. Different soils, sxclud-
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.
Ordinary clay and sand togsther
IN layers. wet and springy, two U)
tons per square foot,
Clay or fne sand, firm and dry.
three (3l tons per square FOOT.
Very firm coarse sand. stiff gravel.
or hard clay. four 90 tons PEE
Sec. !. PRESSURE UNDER
, FOOTING OF FOUNDATION. 9he
loads exertins pressure under the
footings OF foundations In buildings
0 are to be computed as follows:
For warehouses and factories, the
fun dead load and 1886 or the live
load.
In stores and buildings used for
light manufacturing purposes the
load.
In churches. schoolhouses and
places OF public amusement or as
8 sembly. the full dead load and 70go
OF the live load.
; In office buildings. hotels, dwell
ings. apartment houses. tenemen
, houses. lodging houses and stables,
the full dead load and 609s OF the
. live load
3 Footings shall be designed SO that
the loads Will be as uniform as pos
sible. and not IA excess OF the safe
bearing capacity OF the soil as es-
tablished by Section 8 OF this Arti-
Gle.
> Variations from the above re-
quirements may be had only on spe-
cial and written permission OF the
2 Department OF Buildings.
Sec. 5. FOUNDATIONS No foun-
2 dalton wall shall be built upon
3 black soil No foundation wall
4 shall be built OH filled ground, ex-
5 cept for frame buildings not over
Z tions shall be proportioned for the
3 actual average load they Will
. carry in the completed and occu-
0 pied building. and shall be carried
down 10 sand, gravel. hard clay or
2 rock, except where piles are USED i:
4 Limits except sheds, and except
8 frame buildings not over twenty
s five (25) feet high from sill to
! plate, shall have foundations or
3 brick. stone. iron, steel or concrete
3 laid on solid ground. or upon piles
n rtn iY,h Vhan solid
earth or rock Is not found.
, Sheds and frame buildings not
3 over twenty Ave (2O feet high
from sill to plate may be set OH
5 cedar posts or on isolated masonry
s piers not less than /? inches by
Sec. 6. PILES Piles may be of
2 wood or Of concrete and set By
3 driving OF be moulded into place
4 and they shall be spaced to safely
s carry the superimposed load.
6 No pile shall be weighted with
7 load exceeding nifty thousand
8 t50,0O0) pounds.
. Driven piles must be sent to
0 solid bearing II practical. IL piles
I are not driven to refusal Its self
2 sustaining power. shall be deter
8 mined by the following formuia
viz:
s Twice the weight of the ham.
q mer In tons. multiplied BY the RAJ
7 in feet, divided by the least pene
8 hation OF the pile In inches piui
one, under the last blow.
% Concrete piles shall nave thei'
4 bearing power determined by &C
2 tual test In loading. unless in thu
q opinion Of the Department or Build
4 ings, this has been previously done
s under similar circumstances an(
s with similar earth. and to the sat
Z isfaction OF the Department o
3 wooden piles OF 20 feet or lesi
q in length shall not be at th'
/ smaller end OF less dimension thar
2 five inches. nor at the butt enc
3 less than 10 inches. When 20 OF
4 more feet In length the smaller enc
( shall not be less than Ave inches
s and the butt end not less than ~
inches.
8 The top Of all wooden piles shall
9 be cut Off at least nine CD inches
0 below the lowest water line or the
/ line OF permanent wet earth. Con
2 crete shall be rammed down Into
3 the spaces between the piles AZ
4 least ten (10) inches and Tor al
s least twelve u2) Inches OUTSIDE OF
s every pile. thoroughly sealing the
7 heads OF piles.
Q water. and ranging and Gaping
O timbers are used for foundations,
I these timbers shall not be less
. than six CD inches thick. properly
2 Joined together and the tops iaid
4 below the water mark.
sec. 7. DEPTH OF FOUNDA-
. TICN. No foundation wall. pier or
3 post OF any building or structure
A shail start at less depth below
s the finished grade than three and
i one half (3ia) feet. and in build
: ings without cellars or Easements.
< when the first floor Is carried BY
. wooden beams or Joints. the SOD
q and all soil containing organic
I matter shall be removed, and the
2 space below the joists thoroughly
Sec. s. MATERIALS FOR FOUN
Q DATIONS COATING. The walls