To control the elevation of a building, contractors must use or establish one or more benchmarks near the building site. In this example, benchmark A (BMA) is located some distance away from the site and the contractor wants to establish benchmark B (BMB) near the site. Therefore the contractor must: (a) Transfer the elevation form BMA to establish BMB using a technique known as differential levelling (see sketch below) (b) Confirm the accuracy of the work by 'looping' back to BMA or by completing a 'circuit' to another known benchmark - in this case BMC (c) Check the mathematical correctness of the work as well as determine if the work falls within acceptable limits of 3.826 BMA ELEV. 220,000 |HI = 000022 /2.549 0.841 ΤΡΙ ELEY= HI DATUM LINE = 0.000 0.583 BMB ELEV.= HI 2.681 ELEV 1.202 TP2 HIF 66 BMC ELE/-222,226

To control the elevation of a building, contractors must use or establish one or more benchmarks near the building site. In this example, benchmark A (BMA) is located some distance away from the site and the contractor wants to establish benchmark B (BMB) near the site. Therefore the contractor must: (a) Transfer the elevation form BMA to establish BMB using a technique known as differential levelling (see sketch below) (b) Confirm the accuracy of the work by 'looping' back to BMA or by completing a 'circuit' to another known benchmark - in this case BMC (c) Check the mathematical correctness of the work as well as determine if the work falls within acceptable limits of 3.826 BMA ELEV. 220,000 |HI = 000022 /2.549 0.841 ΤΡΙ ELEY= HI DATUM LINE = 0.000 0.583 BMB ELEV.= HI 2.681 ELEV 1.202 TP2 HIF 66 BMC ELE/-222,226

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Q: Why does For order-of-magnitude information, it is practical to use correlations between cone…

A: Cone penetration resistance (CPT and Standard penetration resistance (SPT):

Q: Information obtained when drilling at a site would include: The type of soil present at the site…

A: Drilling is indeed the procedure of entering the earth and removing rocks from different depths…

Q: Several methods for determining or checking in-place density are in use. The simpler, more direct…

A: Measurement of in place density of soil at any site is considered very important because it reflects…

Q: A mine survey is being conducted from a benchmark located at the coordinate position of N 8300, E…

A: Given: coordinate position of benchmark (say o) = N 8300, E 2400And distances of points a, b, c with…

Q: 1.932 1.930 1.920 1.910 1.900 With reference to the figure above, the leveling rod reading equals: O…

A: The levelling rod reading equals to 1.932

Q: What are the advantage of cone penetration test?

A: The cone penetration tests (CPT) are conducted to obtain the cone resistance, the side friction, and…

Q: Put a true or false mark in front of each of the following sentences A. The cost of soil…

A: A. The cost of soil investigations ranges from 10% to 15% of the total cost of implementing the…

Q: From the following cross-section notes, complete the table below. Use prismoidal method. Road bed…

Q: Calculate Ve, Cp and Vp for the following notes. The base in fill is 20 ft and the base in cut is 30…

A: Data given Base width, cut = 30 ft Base width, fill = 20 ft Find: Ve, Cp, Vp

Question

To control the elevation of a building, contractors must use or establish one or more benchmarks near the building site.
In this example, benchmark A (BMA) is located some distance away from the site and the contractor wants to establish
benchmark B (BMB) near the site.
Therefore the contractor must:
(a) Transfer the elevation form BMA to establish BMB using a technique known as differential levelling (see sketch
below)
(b) Confirm the accuracy of the work by 'looping' back to BMA or by completing a 'circuit' to another known benchmark
- in this case BMC
(c) Check the mathematical correctness of the work as well as determine if the work falls within acceptable limits of
TIK
3.826
BMA
ELEV. = 220,000
|HI =
000022
0.841
2.549
TPI
ELEY =
HI =
DATUM LINE = 0.000
·257
0.583
BMB
ELEV,=
HI =
2.681
1.202
TP2
ELEV =
HIS
133
BMC
ELE/-222,2266

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1 Introduction and given data

VIEW

Step 2 Using rise and fall method of levelling

VIEW

Step 3 Final answer

VIEW

Step by step

Solved in 3 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.

Similar questions

N Rod ++ 50 1+50 1+75 2.6 Complete the set of differential leveling notes in Table 2-5, and perform the arithmetic 2.5 Prepare a set of profile leveling notes for the survey in Figure 2-34. In addition to comput- ing all elevations, show the arithmetic check and the resulting error in closure. check. 5.11 4.66 3.98 1.20 1.80 TP 2 4.42 4.30 2.01 Known Elevation is 402.78 4.72 TP 1 BM 61 Elevation = %3D 396.74 FIGURE 2-34 5-35 ()
What are the different methods used for soil classification? Dont use chatgpt or other ai tools. If incase i fine ai content i will give you a dislike.
Q1. Table Q1 shows the levelling data obtained from field observations between two temporary benchmarks namely TBM 1 and TBM 2, respectively. Where, the total levelling distance between TBM 1 and TBM 2 is 250 metres. As a junior site civil engineer at the construction site, you have been assigned by a senior site civil engineer to finalise and evaluate the levelling data to ensure the levelling work complies with the levelling standard and procedures. Table Q1 Intermediate Backsight Foresight Remarks Sight 1.592 ТВМ 1 RL3 AAА.AAA m 1.675 2.052 СР1 1.354 1.704 СР2 1.320 0.907 СР3 1.379 Point 1 1.384 Point 2 1.406 Point 3 0.940 1.315 СР4 0.832 1.507 СР5 -2.938 Soffit 1 -2.833 Soffit 2 -2.717 Soffit 3 1.546 ТВМ 2 RL-BВВ.BBB m a) Finalise the levelling calculation using rise and fall method, performed arithmetic check, accuracy check, levelling misclosure and final reduced level for all observed points. b) For verification purpose you are required to re-calculate the reduced level using…
SITUATION 3. a) The base and altitude of a triangle lot were measured to have certain probable errors of 314.60 0.16 and 92.60 = 0.14, compute the probable error of the resulting computation. (3- b) The following sides of a rectangle and its probable errors are 120.40 0.04 and 360.50 ± 0.08 respectively. Compute the probable errors of the sum of the sides (perimeter) of rectangle. (3r c) The probable error of the mean of 6 observation is 0.043 and the most probable value of the measurement is 860 m compute the relative precision. C