Calculate load distribution factor, Civil Engineering

Assignment Help:

Load Distribution Factor:

The formula for deriving at the number of repetitions of the standard axle load during a design period of n years is:

N =365 × A × VDF × F [(1 + r )n - 1]/r

where A = Number of commercial vehicles per day initially (both directions),

VDF = Vehicle Damage Factor,

F = Load Distribution Factor,

r = Annual rate of growth of traffic (in decimals), and

n =  Design period in years.

Thus, if a two lane road has a present commercial traffic of 4000 veh/day, and the design period is 15 years, the rate of growth of traffic is 7.5%, and the VDF is 3.5, the number of repetitions of standard axle loads during the design Period

N =365 × A × VDF × F [(1 + r )n - 1]/r

A = 4000

VDF = 3.5

F = 0.75 (Table 4.3)

r = 7.5% = 0.075

n = 15

Substituting, N = 365 × 4000 × .35 × 0.75 [1.07515 - 1]/0.075

= 365 × 4000 × 3.5 × 0.75 [2.96 - 1]/0.075

= 100 million

The million standard axles of repetitions is denoted by "msa".


Related Discussions:- Calculate load distribution factor

Curves, procedure on conducting curves in field

procedure on conducting curves in field

Rectangular tie, how would you perform a rantangular tie ,using an optical ...

how would you perform a rantangular tie ,using an optical square

Major bridge and important bridge, Major bridge - Major bridge is one of wh...

Major bridge - Major bridge is one of which has a total linear waterway of 18 m or more for multiple span and total linear water way of 12 m or more for single span. Important b

Underwater inspection procedures - inspection of bridge, Explain the Underw...

Explain the Underwater inspection procedures - inspection of bridge? Under-water bridge inspection, especially the initial inspection, requires careful planning to ensure that

Explain the national primary drinking water standards, Explain the National...

Explain the National Primary Drinking Water Standards Safe Drinking Water Act (SDWA, 1974) required EPA to establish maximum contaminant levels (MCLs) for public water systems

Importance of general and subsidiary rules, Q. What is the importance of Ge...

Q. What is the importance of General and subsidiary rules. What is the main differences between the two. Ans.- Importance of General and subsidiary  rules - General and su

Meaning, i want the meaning of crete

i want the meaning of crete

Concrete, if the slump of concrete drops how to rectify it

if the slump of concrete drops how to rectify it

Raking piles of bridge abutment placed under an embankment, Question It sho...

Question It should be necessary that raking piles of a bridge abutment be placed under an embankment ? Answer For a bridge abutment to be supported on raking piles with div

State about the pre-tensioned concrete, State about the pre-tensioned concr...

State about the pre-tensioned concrete In pre-tensioned concrete, the tendon stresses are transferred  to concrete by  virtue of bond  of concrete to the  surface of steel tend

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