Piles are column elements in a foundation that have the function of transferring the full load from the superstructure.
Piles move the whole mass compact and less compressible to the surface or to the top of the rock.
According to cast in place, the pile is of two types: (I) Pre Cast Pile and (II) Cast In Situ Pile.
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In this article, we discuss the cast in situ pile estimate, details drawing and the process of construction. And also free download the pile estimating spreadsheet and pile details pdf.
A designer should provide complete guidelines for piles.
Pile layout and pile specification should always be precise for a good foundation.
If you make a better Pile of details read the full article of ” Make Pile Details In AutoCAD With DWG and PDF”
Free Download cast in situ pile details DWG & PDF
From our above drawing:
Estimate for 24″ Dia Pile and Boring Length from E.G.L.= 75’6″, Casting Length is = 70′ (Don’t cast 5′-6″ EGL to Upper Pile Casting Level), but Rebar Length is = 69′ (Minus: EGL to Upper Pile Casting Level and Bellow 1 feet CC Casting)
The casting Length is 70′ the concrete mix proportion ratio is 1:1.5:3 or f’c=3000psi [Mentioned in the drawing]
= (πr^2 x Length of pile casting)
= (3.1416 x 1’^2 x 70′)
= 220 cft
Cement: (220 x 1.5)/(1+1.5+3)= 330/5.5 = (60 x 1) = 60 cft [1bag cement equal to 1.25 cft] so, 60/1.25 = 48 bag cement.
Sand: (220 x 1.5)/(1+1.5+3)= 330/5.5 = (60 x 1.5) = 90 cft sand.
Stone or Coarse Aggregate: (220 x 1.5)/(1+1.5+3)= 330/5.5 = (60 x 3) = 180 cft stone.
Note: But in reality, 5% to 20% fewer materials are taken
16 mm Main Rod: (Number of Rebar X ( Length of Reber + Lapping ) x Weight of steel bars per feet) = (8 x ( 69′ + 2′) x 0.48) = (568′ x 0.48) = 273 kg
10 mm Spiral Rod: [((66 / 0.5) + 1) X ( 2π(12″ – 3″ )/ 12)] x 0.188 = (133 X 4.712) x 0.188 = 627 x 0.188 = 118 kg.
Total need 273+118 = 391 kg
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