## AASHTO Pavement Design Empirical Formula 1993

Category: Engineering
AASHTO 1993 Empirical Formula for Pavements AASHTO 1993 Empirical Formula for Pavements is given as under $$\mathit{log}({W_{18}}) = Z_{R} \times S_{o} + 9.36 \times \mathit{\log_{10}} (\mathit{S}_{N} + 1) – 0.20 + \frac{\log_{10}(\frac {\Delta \mathit{PSI}} {4.2-1.5})} {0.40+ \frac{1094} {(\mathit{S}_{N} + 1 )^{5.19}}} + 2.32 \times \log_{10} (\mathit {M}_{R}) – 8.07$$ where $W_{18}$ = number of  predicted 18000 lb. (80kN) ESALs $\mathit{Z}_{R}$ = Standard Normal Deviation $\mathit{S}_{o}$ = Combined standard error of performance and traffic prediction

## Characteristics of Perfect House

Category: General
Characteristics of a Perfect House There are different aspects of a perfect house to be considered: 1.    Location – Since house buyers look to settle down in that area so it should be located in safe region. There may be specific requirements for each individual; however, we are providing a small list here.1)    Market from where groceries and daily usage items are easily available.2)    Mosque.3)    Safe drinking water.4)    School if you have children.5)    Hospital or at least a Dispensary.6)    Neighbors7)    Public Transportation System

## Characteristics of a Perfect House

Category: Engineering
Characteristics of a Perfect House There are different aspects of a perfect house to be considered:   1.    Location – Since house buyers look to settle down in that area so it should be located in safe region. There may be specific requirements for each individual; however, we are providing a small list here. 1)    Market from where groceries and daily usage items are easily available. 2)    Mosque. 3)    Safe drinking water. 4)    School if you have children. 5)    Hospital or at least

## Bags Of Cement In Concrete

Category: Engineering
Bags Of Cement In Concrete Calculation of cement of bags in concrete is a routine task for civil engineers and technicians. Here is the method to calculate bags of cement, fine aggregates and coarse aggregates for all grades of concrete. Say we have a concrete slab of  15’x15’x6″ thick made of 1:2:4 (M15) concrete. Volume of the slab = 15x15x0.5 = 112.5 cft. Using dry mix method: Nominal Mix = 1:2:4 Wastage of cement is

## Grades Of Concrete and their Ratios

Category: Engineering
Grades Of Concrete and their Ratios Here are different grades of concrete with respect to their ratio of cement, sand (fine aggregate) & stone (coarse aggregate). Grade (MPa) Grade (psi) Cement : Fine Agg : Coarse Agg M5 725 1:4:8 M10 1450 1:3:6 M15 2175 1:2:4 M20 2900 1:1.5:3 M25 3625 1:1:2 86 total views, no views today

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