elect all true statements. In underground development blasting ... 1-long delays between holes should be used in the cut area to reduce vibrations and ensure smooth blasting 2-detonating cord rings can be used to connect detonators within a delay sector 3-the angle of breakage should be as large as possible to ensure each hole as free breakage

elect all true statements. In underground development blasting ... 1-long delays between holes should be used in the cut area to reduce vibrations and ensure smooth blasting 2-detonating cord rings can be used to connect detonators within a delay sector 3-the angle of breakage should be as large as possible to ensure each hole as free breakage

Solid Waste Engineering

3rd Edition

ISBN:9781305635203

Author:Worrell, William A.

Publisher:Worrell, William A.

Chapter4: Mechanical Processes

Section: Chapter Questions

Problem 4.18P

See similar textbooks

Similar questions

Q2/ Choose the correct answer. 1- The bit is connected to the lower end of the - A- drill pipes B-drill collars C-drill string. is a casing string that does not extend back to the wellhead, but is hung from another 2- casing string A- production casing B- intermediate casing C- liner. 3- traveling block and drilling line is called A- Drawwork B-block tackle C-rotary system 4- The drawwork is located at A- the derrick floor B-the mast C-the substructure 5- Objective of A- Relief well B-side tracking well. C- controlling vertical well. Solve all ---well is to intercept the borehole of a well for killing purpose
2. A shell leaves a mortar with a muzzle velocity of 150 m/sec. directed upward at 60o with the horizontal. Determine the a) total time of flight. b) Maximum height it reached. c) Location of the shell after 20 sec it was fired d) its resultant velocity 18 sec. after it was fired.
PROBLEM 3 – A plate shown having 12 mm thickness and width of 400 mm is to be connected to a plate of the same width and thickness by a 34 mm diameter bolts. The holes are 2 mm larger than the bolt diameter. Using NSCP 2015, determine the value of b such that the net width along bolts a-b-c-d is equal to the net width along bolts a-b-d. Use A-36 steel with F, = 248 MPa and F, = 400 MPa.
0.20 FIG.1 0.02 1. Find the volume of each of the light post 's components: (5 pts. Each) 0.15 a. Concrete Pedestal b. Steel Plate c. Stiffener - 0.02 0.05 (Thickness =0.5 cm) d. Steel Pipe 0.05 (Outer dia=10 cm, thickness=0.5cm, L=2.50m) 0.30 *Unit of final answer shall be in meters. 0.40
avoid truncation in solution. round off only in final answer
1 1 0 (0 1 1 A =| 5 2 -1;B=| 2 -1 0 7 0 4 1 02 5A - 2B ВХА Det(A) Ax B BTX AT Det(B)
P= 430N M= 860 N•m M 1 m 1 m B m find: Cx & Cy P -2 m- Show Transcribed Text A
Q. Springs. S mech.
Step 1 given; What the dismantling and Assemble of diaphragm valveAlso what is function of part than constant it Step 2 solution; Dismantling joint-It is very useful for joining and removing of pipe section with designing of dismantling joint. because its is used for joint longitudinal adjustment in pipe section for joining of pipe. without longitudinal adjustment ,It is not possible to insert valve for joining of longitudinal pipe. Diaphragm valve-diaphragm valve is flexible valve. which is used for controlling pressure when force is applied in valve then it will be automatically open or close on the basis of pressure adjustment. and it will control the flow rate of fluid. when less flow rate required then valve slightly closed on the basis of flow requirement. when more flow rate required then it will be open. function- it will change the speed and velocity of fluid.
Example: Find the velocity at the pipe center. water D-3" 0.0 (stag.) l (S-136)
Refrence book:steel structure
The effective throat thickness of a fillet weld not to be greater than a. 0.3t b. 0.6t C. t d. 0.5t