B- Design an unbaffled tank to mix a liquid of sp.gr.= 1.297
and
viscosity= 94.5 c.p....
B- Design an unbaffled tank to mix a liquid of sp.gr.= 1.297
and
viscosity= 94.5 c.p. NRe = 7.6*10^5, NFr = 1.7
Calculate the power required.
[From chart if NRe > 10^5 then Np=1.8]
a. Design a concrete mix for construction of a water
tank using ACI Committee 211.1-year 1991. The specified design
strength of concrete is 30 MPa at 28 days. Standard deviation can
be taken as 4 MPa. The specific gravity of fine aggregate and
coarse aggregate are 2.65 and 2.7 respectively. The dry rodded bulk
density of the coarse aggregate is 1600 kg/m3 and the fineness
modulus of fine aggregate is 2.80. Ordinary Portland cement (Type
I) will be used. A...
Example of Mix design proportion calculation
• You need to design the mix proportion of a grade 40 for a column
with workability of 50
mm slump and w/c not more than 0.55. The maximum size of gravel
aggregate is 10 mm
and the fine aggregate is quarry blast sand. The moisture content
of the aggregate is as
follow:
• The gravel aggregate is in moist condition with moisture content
of =3.5%, dry density
= 1700 kg/m3
• The sand...
Design a concrete mix for the superstructure of a
building using DoE mix design method requiring a characteristic
strength of 40MPa at 28days and a slump of 30-60mm. The materials
available are ordinary Portland cement, and uncrushed fine and
coarse aggregates of specific gravity of 2.65. The maximum nominal
size of coarse aggregate is 10mm and fine aggregate confirms to the
grading zone III. Neglect the effect of standard deviation and
other factors.
Q5) Prepare a mix design (Use ACI Method of Mix Design) which
will be used for a pier located at the South Carolina. South
Carolina is hot and humid with daytime temperatures averaging
between 30–34 °C in most of the state and overnight lows averaging
21–23 °C on the coast and from 19–23 °C inland. Winter temperatures
are much less uniform in South Carolina. Coastal areas of the state
have very mild winters with high temperatures approaching an
average of...
Design a concrete mix by using ACI Method of Mix Design having 28-day characteristic mean strength of 28 MPa for a deck of a residential building at Nebraska. Dry weather and gradually warming temperatures may be expected throughout the working week. Fresh concrete composed of a slump of 90 mm and maximum aggregate size of 25 mm. Determine the amount of water reducing admixture to be used for 0.24 % and 0.35 %. Deck is a flat surface capable of...
Q1) Design a concrete mix by using ACI
Method of Mix Design having 28-day characteristic mean
strength of 27 MPa for a deck of a residential
building at Nebraska. Dry weather and gradually warming
temperatures may be expected throughout the working week. Fresh
concrete composed of a slump of 90 mm and maximum aggregate size of
25 mm. Determine the amount of water reducing admixture to be used
for 0.24 % and 0.65 %. Deck is a
flat surface capable...
A large tank containing a mystery liquid is filled to a depth of
L = 35 m. The upper surface of the liquid is
exposed to the atmosphere (of density 1.2
kg/m3). A pipe of cross-sectional area
Ain = 0.01 m2 is inserted in
to the liquid. The other ’outlet’ end of the pipe, of smaller cross
sectional area Aout = 0.005
m2, is placed outside the
liquid at a height of h = 2 m below the surface of...
A propane tank with 75 gallons of liquid propane is at 50 F in a
sealed tank. The tank develops a significant leak and propane
escapes and vaporizes in a short period of time. To solve this
problem you must use the propane tables not the common liquid
properties.
What is the temperature near the hole in the propane tank
due to the escaping propane in Fahrenheit to three significant
digits? . Include a minus sign if
appropriate.
How many...