A moist rock mass is characterized by the following parameters: joint water pressure is nill; point load index is 3MPa; Joint spacing is 0.5m; and RQD is 55%; Joint condition is open joints filled with 5mm gouge. Classify the rock mass according to RMR method.

Answers

Answer 1

The RMR value is 413.15, which indicates that the rock mass is of excellent quality.

What is RMR method?

The most important geologic criteria are combined by RMR, which depicts them as a single, comprehensive indicator of rock mass quality.

Based on the given parameters, we can use the Rock Mass Rating (RMR) method to classify the rock mass.

The RMR value is given by the formula:

RMR = 70Q + 10G + 5F + 8L + 7S - 3W

Using the given parameters, we can calculate the RMR value as follows:

Q = 10 x [tex](RQD/10)^{1/2[/tex] x (Jn + Ja + Jw + Jr + Jsr)

Where Jn, Ja, Jw, Jr, and Jsr are the joint sets orientations, number, water pressure, roughness, and spacing rating, respectively.

Since we do not have information about the joint orientations and roughness, we can assume that they have a neutral effect on the RMR value, which means that Jn=Ja=Jr=1 and Jw=Jsr=0.5.

Therefore,

Q = 10 x[tex](55/10)^{1/2[/tex] x (1 + 1 + 0.5 + 1 + 0.5) = 57.45

G = 0 (since joint water pressure is nil)

F = 5 (since the joint condition is open joints filled with gouge)

L = 8 - 2.6 x log10(0.5) = 5.44

S = 7 (since the joint condition is filled with 5mm gouge)

W = 0 (since joint water pressure is nil)

Thus, RMR = 7057.45 + 100 + 55 + 85.44 + 77 - 30 = 413.15

For more details regarding RMR method, visit:

https://brainly.com/question/30039261

#SPJ9


Related Questions

Is it an inward or outward force that is exerted on the clothes during the spin cycle of an automatic washing machine?

Answers

The force exerted on the clothes during the spin cycle of an automatic washing machine is an inward force. This force is called the centrifugal force.

Understanding the Inward Centrifugal Force in Automatic Washing Machines

During the spin cycle, the drum of the washing machine rotates rapidly, and the clothes inside the drum are pushed towards the sides of the drum due to their inertia. This outward movement of the clothes creates a force that is perpendicular to the direction of rotation and directed away from the center of the drum. This force is known as the centrifugal force.

However, the walls of the drum of the washing machine apply an equal and opposite force to the clothes, which keeps them from flying out of the drum. This inward force is what allows the clothes to be effectively cleaned and dried during the spin cycle.

The force exerted on the clothes during the spin cycle of an automatic washing machine is an inward force, known as the centrifugal force. This force allows the clothes to be effectively cleaned and dried, without them flying out of the drum.

To know more about  centrifugal force, visit:https://brainly.com/question/17167298

#SPJ4

Determine the length of welds required to transmit a load 54.5 KN between 12.7mm. thick plates, when the plates are to be joined by 1) Two parallel fillet welds. 2) Two transverse fillet welds.

Answers

For the parallel fillet weld, the length required is 24.52mm and for transverse fillet welds, the longer fillet weld required is 24.39 mm and the length of the shorter fillet weld required is 6.13 mm.

What is the length to transmit the load

The length of weld required to transmit a load between two plates depends on the type of weld used and the strength of the material being welded. For the given scenario:

Two parallel fillet welds:

The length of each fillet weld required can be calculated using the following formula:

L = (2 x F x P) / (0.7 x T)

where L is the length of each fillet weld, F is the applied force (54.5 KN), P is the perimeter of the weld (2 x length of the joint), T is the thickness of the plate (12.7 mm), and 0.7 is a constant. Substituting the values, we get:

L = (2 x 54.5 x 2) / (0.7 x 12.7) = 24.52 mm

Therefore, the length of each fillet weld required is 24.52 mm.

Two transverse fillet welds:

The length of each fillet weld required in this case can be calculated using the same formula as above, but with the perimeter of the weld being the sum of the lengths of the two sides being welded. Since the two fillet welds are transverse, their lengths will be different. Assuming one fillet weld is longer than the other, we can calculate their lengths as follows:

L1 = (F x P1) / (0.7 x T)

L2 = (F x P2) / (0.7 x T)

where L1 and L2 are the lengths of the two fillet welds, P1 and P2 are the perimeters of the two sides being welded, and all other variables are the same as before. We can assume that the longer fillet weld is on the side with the higher applied force, so we have:

P1 = 2 x length of joint

P2 = length of joint

Substituting the values, we get:

L1 = (54.5 x 2 x 2) / (0.7 x 12.7) = 24.39 mm

L2 = (54.5 x 1) / (0.7 x 12.7) = 6.13 mm

Therefore, the length of the longer fillet weld required is 24.39 mm and the length of the shorter fillet weld required is 6.13 mm.

Learn more on applied force here;

https://brainly.com/question/25732012

#SPJ1

Starting with an empty stack, the following operations are performed. What is the final state of the stack?

Answers

Values popped in this order: h, s, and f. Condition of stack: m, d (from top to bottom).

This is presumable if the stack is initially empty. Suppose that p contains the pops' values. The stack's status is indicated by where the top and bottom of the stack point. The top of the stack is the point where a new value is entered and an old value is removed. This is how it happens: pushes d into the stack to insert it (d). D->top in the stack. pushes into the stack and enters h (h). H -> top. bottom of stack By using pop (): d -> top, d. h gets removed from the stack. If p contains popped values, then h should be placed into p as the first popped value. p = h. pushes f into the stack to insert it (f). F -> top. D -> bottom of stack. Stack.

Learn more about The stack here:

https://brainly.com/question/17177482

#SPJ4

Dante uses ______ DSCP tags for QoS.

Answers

Dante employs layer 3 QoS tagging called DSCP (Diffserv).

What does DSCP mean?

In contemporary Layer 3 IP networks, Differentiated Services Code Point (DSCP) is a technique for categorizing and controlling network traffic as well as for delivering quality of service (QoS). Differentiated services, also known as DiffServ, is an IP-based computer networking architecture that defines a method for categorizing, controlling, and delivering quality of service to network traffic on contemporary IP networks. DSCP Score. Using the 6 bits, DiffServ Code Point (DSCP) produces 26 = 64 distinct values (0 to 63). describes the values of the DSCP standards. The remaining DSCP values can be altered to meet the QoS specifications.

How does DSCP QoS work?

Network data traffic classification is determined by Quality of Service (QoS) DSCP Marking. This can be used to identify the network traffic that uses more bandwidth, is more important, and has a higher chance of dropping packets.

To know more about DSCP visit:

https://brainly.com/question/29590727

#SPJ1

the best vacations include excellent accommodations, like 10 boutique hotels we discovered with a local focus. to which city did we travel to stay in an 1867 mansion built by a famed architect, with custom wallpaper weaving in local history?

Answers

Travel and history go hand - in - hand. History provides us with a broad grasp of a past, whereas travel links the past to the present and enables us to comprehend its importance both now and in the future.

Why is being naturally good?

Use in a casual way to express that something is obvious to you and actually not shocking given the circumstances. Everybody gets frustrated and disappointed when things go bad. People were naturally interested in such arrivals and departures. Naturally, he had already been horrified and furious.

What, in plain English, does nature mean?

All non-human produced objects on the planet, such as all animals, vegetation, as well as other living creatures, and all natural phenomena, are collectively referred to as nature. The

To know more about naturally visit:

https://brainly.com/question/20378345

#SPJ4

how is an nmos and gate implemented? group of answer choices a single nmos transistor. 2 nmos transistors in series. 2 nmos transistors in parallel. the output of 2 nmos transistors in series connected to the input of a single nmos transistor. the output of 2 nmos transistors in parallel connected to the input of a single nmos transistor. the output of a single nmos transistor connected to the input of 2 nmos transistors in series. the output of a single nmos transistor connected to the input of 2 nmos transistors in parallel.

Answers

An nmos and gate can be implemented using 2 nmos transistors in series, or the output of 2 nmos transistors in parallel connected to the input of a single nmos transistor.

Implementing an nmos AND gate using two transistors in series or in parallel

In the first implementation, the two nmos transistors are connected in series, with the input signal connected to the gate of the first transistor and the output taken from the drain of the second transistor. When the input signal is high, the first transistor is turned on, allowing current to flow to the second transistor. If the second transistor is also turned on, the output will be low, otherwise, the output will be high.

In the second implementation, the two nmos transistors are connected in parallel, with their sources and gates connected together, and the output taken from the drains. When the input signal is high, both transistors are turned on, allowing current to flow to the output. If either of the transistors is turned off, the output will be low.

Both of these implementations use two nmos transistors, but they are connected differently to achieve the desired logic function. A single nmos transistor can be used to implement a NOT gate or an inverter, but it cannot implement an AND gate

To know more about transistors, visit:https://brainly.com/question/29731975

#SPJ4

Other Questions
Maria is renting kayaks from a local shop that charges a $7 fee, plus an hourly rate of $5. 50. For how long can maria rent the kayak if she pays a total of $40?. What is the break-even quantity beyond which the first process is more attractive? soaps. (enter your response rounded to nearest whole number. ) take your time in 2-6 Suppose you have two metal cubes, one made of iron and one made of aluminum. You transfer the same amount of heat Q to each of them. Which cube will have the higher final temperature, given they have the same masses and initialtemperatures? a. Iron Cube b. Aluminum Cube What the History of tessellations?Name and explain the 3 types of tessellations Which are the features of lymphatic vessels? "In the end, we will remember not the words of our enemies, but the silence of our friends." Martin Luther King, Jr. We are the friends of the children we teach. What does it mean to teach with the mindset of advocacy for the genders, cultures, races, abilities and families of our children? Why are there so few top carnivores in most ecosystems? the marine corps is an example of a total institution. identify the skills marines learn in boot camp as part of their socialization into the corps. a) how to carry and use the equipment they have been issued b) how to view killing as an acceptable or even necessary practice c) how to conform to rules about personal attire and personal areas d) how to express themselves as individuals the frap technique occurs in a series of steps. select every statement that correctly describes a step in the frap procedure. ejemplos de estilos literario. estilo elegante,pomposo,el estilo magnifico,el estilo sublime,el estilo humorista after earning $8 billion in profit, royal dutch/shell decided to strive to double its profits within the next five years. which classical management function would be instrumental in achieving this goal? a. motivating b. marketing c. planning d. research and development e. optiimiizing Why does 1M NaCl have a higher boiling point than water? Fatima has a total of $8 to spend to make fruit smoothies. She will use two types of fruit. The table to the right shows the cost of each type of fruit per cup. For the mango and pineapple mixture, find a linear equation in standard form that models how much mango and pineapple she can buy, where x is cups of mango and y is cups of pineapple. Mango=0.50 Pineapple=0.75 Strawberry=1.00 1. Does Lodge oppose or support ratifying the treaty of Versailles?2. What are two reasons that Lodge gives for opposing the Treaty of Versailles?3. Do you agree with Lodge's reasoning?4. Does the political cartoon go with the Lodge's point of view? please help me on these! What information is in the text but not in the graph? while a _______ is a group of closely related phenomena or observations, _______ is a logical idea that can be tested. which of the following are true statements? select all that apply: 1. a 95% confidence interval is a random interval that contains the true parameter 95% of the time 2. the true parameter is a random value that has 95% chance of falling in the 95% confidence interval 3. i perform a linear regression and get a 95% confidence interval from 0.4 to 0.5. there is a 95% probability that the true parameter is between 0.4 and 0.5. 4. the true parameter (unknown to me) is 0.5. if i sample data and construct a 95% confidence interval, the interval will contain 0.5 95% of the time. answer : 6. if 12,500 units are produced and sold, what is the total amount of variable costs related to the units produced and sold? (do not round intermediate calculations.)