Determine the grade rod reading at station, Civil Engineering

Assignment Help:

A section view of a proposed roadway is shown in Figure 1 with an existing grade point elevation of 100-ft. The proposed roadbed finish grade elevation at station 50+00 is 95.00-ft and slopes at 2% grade. The grade rod reading at station 55+00 is most nearly:

Solution:

The Height of Instrument elevation can be calculated:

HI = 100.00-ft + 8.5-ft = 108.5-ft

The grade rod reading at station 50+00 is calculated by:

HI - station 50+00 elevation = 108.50-ft - 95.00-ft = 13.50-ft

The distance between station 50+00 and 55+00 is 500-ft

The slope is set at 2%, therefore; 2% x 500-ft = 10-ft elevation difference between stations.

Add the results of the proposed roadbed slope which is 10-ft to the grade rod reading at station 50+00 to obtain the grade rod reading at station 55+00 which is 23.50-ft.


Related Discussions:- Determine the grade rod reading at station

Protection of lorry on the line, i. On single line by one or two men as req...

i. On single line by one or two men as required following and proceeding the lorry at a distance of 600 m. on the BG and 400 m. on the MG & NG carrying a banner flag across the tra

Functions of bedding below storm water drains, Question What are main funct...

Question What are main functions of bedding below storm water drains ? Answer Bedding that is normally made of granular resources or concrete serves four main functions as optio

Total station, describe in detail the various parts of a total station

describe in detail the various parts of a total station

Alluvial streams, Alluvial Streams: In alluvial streams, the regime w...

Alluvial Streams: In alluvial streams, the regime width of a river is calculated from the Lacey's formula : W = 4.8 Q ½ where  W = Regime width in m, and Q = Discha

Trigo, A pole which leans 11o from the vertical toward the sun casts a shad...

A pole which leans 11o from the vertical toward the sun casts a shadow 12m long when the angle of elevation of the sun is 40o. Find the length of the pole

What is thermo-electric prestressing, What is Thermo-electric prestressing ...

What is Thermo-electric prestressing We know that, stretched tendons are used in prestressed concrete. Stretching of tendons may be accomplished by using jacks or by other mea

Vertical gradient - geometric design of roads, Vertical Gradient: Ver...

Vertical Gradient: Vertical gradient can be of three types: Ruling Gradient Used as a matter of course. Limiting Gradient Used in situations where site condit

Types of cement, Types of Cement In addition to ordinary Portland ceme...

Types of Cement In addition to ordinary Portland cement there are various varieties of cement. Significant varieties are briefly explained below: (i) White Cement: The ce

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd