The Vinita daily chieftain. [volume] (Vinita, Indian Territory [Okla.]) 1902-1913, 1904-06-06
FACTS ABOUT sKYscRAPERs
Interesting Particulars Of the Build
ing and Expense Of the Great
City Structures.

City Structures.
Height is effected by the following
considerations Sixteen stories OF less
can be carried on piles OF grillages, no
matter how bad the bottom. More than
16 stories requires caissons OF an equiv
alent expense If the subsoil Is bad.
Therefore, several additional stories
must be put in simply to pay interest
on the extra cost Of the caissons, says
the Architectural Record.
For lots of 1900 to 12.50O square feet.
five cars will give a satisfactory eleva-
tor service up to - stories. Higher
than that a car should be added for
each additional three stories. costing
100 square feet Of room on each floor
per car. For still greater area. the
number of cars must be increased, say
one car for each 1000 square feet, and
this is because It is impossible to un-
load large car fast enough--two cars
Of 40 square feet running IN a 20-story
building viii handle more people in
a day than one of 80 square feet, and do
II with much more satisfaction
In 16-story building. with ordinary
foundations, the addition Of seven
teenth story win add more than one
sixteenth the cost Of the building by
five per cent; for an eighteenth story,
ten per cent. muat be added to the one
sixteenth. and so on Thus, If a 16-
story building costs $3.50, 900, then
seventeenth story will add to the cost
$31,500; an eighteenth story $4,000,
ETC.
The time necessary to go from a
street corner to the twentieth floor of
a 20-story building In front Of which a
person is standing Is about the same
as the time required to walk half a
block and reach the tenth floor Of
neighboring building.
The time required to go from the
twentieth TO the fifth floor of a 90
story building is about the same as
that required to 90 from the tenth
story Of 10-story building TO the
tenth story Of an adjoining 10-story
building.
The heating Of one upper story
(above the tenth) will cost nearly as
much as heating two lower stories.
unless there is always exhaust steam
70 waste
The average temperature Of the out
side air at any 200 feet above the
street and above is from three to fve
degrees less than the average is at the
street This is an advantage ia the
summer and a disadvantage in the
winter.
II the elevators could be divided
into sections and the shaftways for the
way elevators stopped. for exsmple,
at the tenth floor Of a 20-story build
ing. then saving OF space could be
effected. though the space so saved
would not always be available for
renting purposes.
No formula can be made to express
all the conditions. for II would have to
be based on 20 many assumptions that
would have no value when solved, but
by averaging a number OF cases and
making certain assumptions II may
be stated that probably a s2-story
building would have a gross return OF
II per cent under conditions that
would show a gross return OF 10 per
cent for a 16-story building on the
same lot That is. an investment Of
s2.s20,O0o. divided into lot s1.OO0,00O.
building s2.42O000. would show IRE
turn Of $4,000 where total invest
ment OF s2.000,000 divided into lot
81 600, 900. building s1.000000. would
show return Of 100000 That means
that an additional expenditure Of ST.,
100000 would return $4,000. There
are many cases in which the smaller
amount could be obtained, while the
larger could not
The vibrations Of very tall buildings
lover 25 storiesl is an unknown guam
tity. Theory indicates that IT would
be Objectionable Practice reveals its
existence in certain cases, though in
a slight degree. Il is probable that in
buildings exceeding 16 stories and Of
a height exceeding i've times the least
width there viii be Objectionable VI
bration after the buildings have been
erected Is to 90 years.