71 Answered Questions for the topic civil engineering

Civil Engineering

18d

#### How much can i store weight wise on my flat office roof?

I have an office inside a warehouse with a flat roof. We would like to store some miscellaneous items on top. We were told we needed a sign that displayed the weight capacity of the roof. How would... more
Civil Engineering Statics

07/26/21

#### How do you know it is a zero-force member?

How do you know a member is zero-force? Assume I have no knowledge of zero-force members when explaining.
Civil Engineering

06/18/21

#### Calculate load for an I beam used as a column

Hello. I am trying to calculate how much load can an I beam bear if used as a column. it is a steel beam W 5x16
Civil Engineering Physics Mechanical Engineering

06/17/21

#### applied hydraulics

In a 30 mm diameter pipe, 0.1 mm roughness and 200 m long, 1.5 L/s of water flows at 20oC. Calculate the head loss hf and the unit head loss J = hf/L
Civil Engineering Physics Mechanical Engineering

06/17/21

#### applied hydraulics

In the flow of a fluid there is a galvanized steel duct (e = 0.180 mm; D = 100 mm); Q = 20 L/s; ν = 3604 x 10-4 m2/s; γ = 1,324 kgf/m3. The question is: what is the head loss in fluid m.c. and the... more

05/02/21

#### Show that B is the inverse of A.

A = -1/2 -5/4 B = 8 51 2 -4 -2To show that B is the inverse of A, we need to show that AB = I = BA.AB = -4 + ___ -5/2 + ___ = ____ ____ 8 + ___ 5 + ___ ____ ____BA = -4 +... more
Civil Engineering English

02/09/21

#### Use the function to evaluate the indicated expressions and simplify

F(x)=x+5f(x2)=(f(x))2=
Civil Engineering Linear Algebra

12/25/20

#### linear algebra and civil engineering

Civil Engineering Math Physics Mechanical Engineering

10/30/20

#### The volleyball is played with a ball of about 270 g and 21 cm in diameter.

In one game, the ball ended up in a pool with so much strength that it almost reached the bottom of it and then went up to the surface.Calculate:a) The force exerted by the pool water on the... more
Civil Engineering Math Physics Chemical Engineering

10/29/20

#### A 20 cm high polystyrene board with a surface area of 40 dm2 is floating in the water.

a) What fraction of its volume is above the water surface?b) If a 35 kg child is placed on this board, what will be the fraction of its volume that is above the water surface?Data: Polystyrene... more
Civil Engineering Math Physics Mechanical Engineering

10/29/20

#### A piece of copper immersed in water has an apparent weight of 2.65 N and when it is immersed in a liquid of density 1.50 x 103 kg/m3 its apparent weight is 2.50 N.

Is it pure copper or does it contain any other metal? Copper density 8.9 X 103 kg/m3.
Civil Engineering Math Physics Mechanical Engineering

10/29/20

#### A fluid pressure gauge, called a Venturi tube, or venturer, is a device designed to measure the velocities of fluids flowing through pipes.

It consists of a tube that is inserted in the pipe, has the same diameter as this one, gradually narrowing and then increasing, the section also gradually to avoid the formation of swirls and thus... more
Civil Engineering Math Physics Mechanical Engineering

10/29/20

#### The volleyball is played with a ball of about 270 g and 21 cm in diameter.

In one game, the ball ended up in a pool with so much strength that it almost reached the bottom of it and then went up to the surface.Calculate: a) The force exerted by the pool water on the ball.... more

10/09/20

The cardinality of the set                          is  , while the cardinality of the set  is -----------  while the cardinality of the set   is--------
Civil Engineering Architecture

10/05/20

#### Subfloor - civil engineering

If i have a cut and fill project, how can i have a subfloor for ventilation? because the earth underneath would block the wind from one direction and it really cannot act as ventilation.

10/02/20

Let  and    and . Which of the following statements is (are) true?(can have many answers)a.)b.)c.)d.)e.)f.) Which of the following statements is (are) true?  .  Which of the following statements is... more

10/02/20

Which of the following is the power set of ? a.) 4b.)c.)d.)e.)     ?

10/02/20

Which of the following is a subset of ?Note: There may be multiple correct answers!a.) b.) c.) d.) e.)

10/02/20

What is the cardinality of the following set?(This can have many answers)a.) 0b.) 4c.) 7d.) 3

10/02/20

Consider the set          .Which of the following is the corresponding set builder notation for the above set?a.) b.) c.)d.)
Civil Engineering Math Calculus Discrete Math

09/29/20

Let  and  be any given sets. Use set builder notation and logical equivalences to show that       .
Civil Engineering Math Calculus Discrete Math

09/21/20

In each of the following, decide whether the given quantified statement is true or false (the domain for both  and  is the set of all real numbers). Provide a brief justification in each... more
Civil Engineering Math Calculus Discrete Math

09/21/20

In each of the following, decide whether the given quantified statement is true or false (the domain for both  and  is the set of all real numbers). Provide a brief justification in each... more
Civil Engineering Math Calculus Discrete Math

09/21/20