Surcharge point loads spreadsheet

Surcharge point loads spreadsheet

 

Retaining walls are built in order to hold back earth which would otherwise move downwards. A surcharge load results from forces that are applied along the surface of the backfill behind the wall. These forces apply additional lateral forces along the back of the wall. This spreadsheet calculates the resulting pressure field acting on the retaining wall due to a point load at a given position behind the wall.

Calculation Reference
Surcharge Loads

 

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CAD Detail Library

CAD Detail Library

 

CAD Details Library is a library where you can download 2D and 3D Autocad files like typical details, note drawings and specific details like bridges, steel connection, concrete structures, tanks, joins, per-stressed elements etc. commonly using construction industry. Addition to that architectural drawings, landscape drawings, site plans and lot more categories are included.

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Autocad blocks collection

Autocad blocks collection

 

Our autocad blocks collection has about 6000 entities :

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Analysis of gabions spreadsheet

Analysis of gabions spreadsheet

 

Purpose of calculation:

Calculate whether the wall will slide forward? Calculate the bearing pressure beneath the base?  Considering friction acting on the vertical faces, would stability improve?

Calculation Reference

Geotechnics

Calculation Validation

Reproduction of a sample calculation from a published calculation reference

Calculation Reference

Geotechnics

 

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Analysis of a slip on a long natural slope

Analysis of a slip on a long natural slope

 

Purpose of calculation:

A slip has developed in a long natural slope, determine the FoS along the slip plane using the critical state parameter, and the residual strength parameter. Analysis the stability of the slope using the limit state method.

Calculation Reference

Craig’s Soil Mechanics

Calculation Validation

Reproduction of a sample calculation from a published calculation reference.

Calculation Reference

Geotechnics

 

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Concrete calculator formula

Concrete calculator formula

What is concrete?

Concrete is one of the most commonly used building materials.

Concrete is a composite materialmade from several readily available constituents(aggregates, sand, cement, water).

Concrete is a versatile material that can easily be mixedto meet a variety of special needs and formed to virtually any shape.

What you should know Before Estimating :

Density of Cement       = 1440 kg/m3
Sand Density                  = 1450-1500 kg/m3
Density of Aggregate   = 1450-1550 kg/m3

How many KG in 1 bag of cement                                 = 50 kg
Cement quantity  in litres in 1 bag of cement          = 34.7 litres
1 Bag of cement in  cubic metres                                  = 0.0347 cubic meter
How many CFT (Cubic Feet)                                            = 1.226 CFT
Numbers of Bags in 1 cubic metre cement               = 28.8 Bags

Specific gravity of cement   = 3.15
Grade of cement  =  33, 43, 53
Where 33, 43, 53 compressive strength of cement in N/mm2

M-20 = 1 : 1.5 : 3  = 5.5, (Cement : Sand : Aggregate)
Some of Mix is – 5.5

Where, M   = Mix
20  = Characteristic Compressive strength

Consider volume of concrete = 1m3

Dry  Volume of Concrete = 1 x 1.54 = 1.54 m3    (For Dry Volume Multiply By 1.54)

Calculation for Cement, Sand and Aggregate quality in 1 cubic meter concrete:

 

  • CALCULATION FOR CEMENT QUANTITY

Cement=  (1/5.5) x  1.54    = 0.28 m3   1 is a part of cement, 5.5 is sum of ratio
Density of Cement is 1440/m3

= 0.28  x 1440 = 403.2 kg

We know each bag of cement is 50 kg
For Numbers of Bags =   403.2/50     = 8 Bags

 We Know in one bag of cement = 1.226 CFT

 For Calculate in CFT (Cubic Feet) = 8  x 1.225      = 9.8 Cubic Feet

  •   CALCULATION FOR SAND QUANTITY

Consider volume of concrete = 1m3

Dry  Volume of Concrete = 1 x 1.54 = 1.54 m3

 Sand=  (1.5/5.5) x 1.54    = 0.42 m3   1.5 is a part of Sand, 5.5 is sum of ratio

Density of Sand is 1450/m3

For KG = 0.42 x 1450 = 609 kg

 As we know that 1m3 = 35.31 CFT

For Calculation in Cubic Feet   = 0.42 x 35.31 = 14.83 Cubic Feet

 

  • CALCULATION FOR AGGREGATE QUANTITY

Consider volume of concrete = 1m3

Dry  Volume of Concrete = 1 x 1.54 = 1.54 m3

Aggregate =   (3/5.5) x 1.54 = 0.84 m∴ 3 is a part of cement, 5.5 is sum of ratio

Density of Aggregate is 1500/m 

Calculation for KG = 0.84 x 1500   = 1260 kg

As we know that 1 m3 = 35.31 CFT

Calculation for CFT  = 0.84 x 35.31 = 29.66 Cubic Feet

Concrete Quality calculation sheet download

Calculation for Cement, Sand  quality in mortar  for Plaster:

 

Area of brick wall for plaster = 3m x 3m =9m2

Plaster Thickness = 12mm (Outer-20mm, Inner 12mm)

Volume of mortar = 9m2  0.012m            = 0.108m3

Ratio for Plaster Taken is                             = 1 : 6

Sum of ratio is                                                   = 7

 

Calculation for Cement Volume

Dry Volume of Mortar = 0.108  1.35 = 0.1458 m3

Cement= (1/7) = 0.0208 m3  

Density of Cement is 1440/m3

= 0 1440              = 29.99 kg

We know each bag of cement is 50 kg

= (29.99/50)        = 0.599 Bags

 

Calculation for Sand Volume

Sand = (6/7) x 0.1458      = 0.124m3

Density of Sand is 1450/m3

= 0 1450                = 181.2 kg

Now we find how many CFT (Cubic feet) Required

 As we know that 1m3 = 35.31 CFT

= 0.124*35.31

               = 4.37 CFT (Cubic Feet)

 

Plaster calculation sheet download

Reference : tutorialstipscivil.com

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