The Detroit times., 1910-10-05

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m4 loan. black eo(l. and mud. g DE
bottom Of the toot1ngs. shall -
deemed 20 safely sustain the follow
ing i iSsds TO tie supsrneisl foot
!, Ordinary clay and ..na sossts:s
tons per square foot.
Clay or nns sand. Arm and dry.
three (sl tons per square foot
very nrm coarse sand, stt1 gravel.
Sec: J. PRESSURE UNDER
FOOTING OF FOUNDATION. The,
loads exerting pressure under the
f foo.ing ss. OF foundations In buildingsi
are To be computed an follows:
For warehouses and factories, thoJ
fun dead load and 7s% Of the live
load.
In stores and buildings used for
full dead load and 7o% Of the live
load.
In churches. schooihousss ana
places OF public amusement or as
sembly. the full dead load and 7o8
In Office buildings. hotels. DWELL
ings. apartment houses. tenement
houses, lodging houses and stables.
the full dead load and SOB Of the
live load
the loads will be al uniform a. pos
sible and not In excess OF the safe
bearing capacity OF the coil a. e.
tablished by Section 3 OF this Ard
Gle.
Variations from the above ~
Quirements may be had only on sps-
cial and written permission OF the
Department OF Buildings.
Sec. s. FOUNDATIONS. No foun-
dalton wall shull be built upon
black soil. No foundation wall
cept for frame buildings not over
two stories In height. Founda-
tions shall be proportional Tor the
actual average load they Will
carry in the completed and occu-
down to sand. gravel. hard clay or
Every building within the City
Limits except sheds. and except
frame buildings not over twenty
Ave (c6) feet high from sill 70
brick. stone. iron, steel or concrete
laid on solid ground. or upon piles
or ranging timbers, when solid
earth or rock Is not found
Sheds and frame buildings ncS
from sill to plate may be set ON
cedar posts or on isolated masonry
piers not less than IL Inches ~
Sec. 8. PILES Piles may Be Of
wood or OF concrete and set ~
driving or be moulded into place.
and they shall be spaced to safely
carry the superimposed load
No pile shall be weighted with
q load exceeding nifty thousand
(50,000) pounds.
} solid bearing II practical. II piles
are not driven to refusal, tto SELF
sustaining power shall be deter
, mined by the following formula
viz:
mer in tone. multiplied BY the fail
| In feet, divided by the least pens.
, tration OF the pile in inches plus
, one. under the last blow.
concrete piles shall hsv, tnsr
tuai test In loading. unless U sne
opinion of the Department. OF Builo-
ings. this has been previously done
under similar circumstances eno
J with similar earth. and 20 the sat-
isfaction Of the Departmens
wooden piles Of 20 fest Or less
! In length. shall mot - ~ the
smaller end Of less dimsnsion tha1
J Ave inches. nor at the butt Eng
more feet In length the smaller cn0
) shall not be less than nvs inches
) and the butt end not less than IL
The top Of all wooden PILE. shall
, be cut on at least nine ~ men. ~
line Of permanent wet earth Con-
D crete shall be rammed down INTO
the spaces between the piles at
1 least ten (l0) inches ana tor q
5 every pile. thoroughly sealing me
! II piie Construction IL used under
. water, and ranging and cAppanG
D timbers are used for founoeuonas
i these timberc shall not De tsss
: Joined together and the tops ieao'
I below the water mark
Sec. Z. DEPTH OF FOUNDA-
2 TON. No foundation wall. pier or
) post of any building or structure
: shall start at less depth below
5 the finished grade than three and
one half t3h) feet, and In build |
7 ings without cellars or Easements.
when the first floor 10 carried by
3 wooden beams or Joints. the SOD
9 and all soil containing orsanic
. space below the joists thoroughly
Sec. 8. MATERIALS FOR FoUN-
Q DATIONS.-COATING The walls
8 Of cellars or Easements below the,
5 dampness by an exterior coating OF
8 Portland cement mortar. or by hot
7 asphalt. tar or other waterproof
8 material. approved as such BY the
3 Department Of Buildings
Sec. 3. FOOTINGS The footings
. courses under walls shall be OF
8 stone, concrete, brickwork or steel
1 beams bedded In plain concrete. re-
inforced concrete or O combination
s Of any OF these. with sufficient pro-
lection on each side OF wall TO dis
tribute the weight OF the super
. structure. according to the bearing
quality Of the soil or the earth
underneath.
. The thickness Of footing courses
8 are to be proportioned. so that the
5 tom OF the lower footing course,
8 shall not exceed an angle OF forty 3
1--WE (45) degrees from the face Of
the wall. resting on such footing
course or courses.
0 II steel or iron beams or rails
I are used In footing courses this
2 angle need not be maintained. Tho
3 beams or rails must DO properly
I proportioned and set TO evenly dis
5 tribute the load over the whole OF
8 the bearing. All auoh beams or
rails must be bolted together ana
5 laid on q concrete bed. and must
3 be entirely covered or imbedded IN
0 Portland concrete. ~.
i All cavities between such beams