Tower Crane Foundation Design - Calculation Example Link Better

Vtotal=Vc+Wfcap V sub t o t a l end-sub equals cap V sub c plus cap W sub f

Let's trial a square concrete pad with the following dimensions: Length ( ): Thickness ( ): Step 3: Calculate Total Vertical Load

The or the manufacturer's overturning moment values Your project's allowable soil bearing capacity tower crane foundation design calculation example link

$$ q_u = 1.4 \times \sigma_max = 1.4 \times 102.96 \approx 144.1\ \textkPa $$

σmax,min=PtotalB2±6⋅MbaseB3sigma sub m a x comma m i n end-sub equals the fraction with numerator cap P sub t o t a l end-sub and denominator cap B squared end-fraction plus or minus the fraction with numerator 6 center dot cap M sub b a s e end-sub and denominator cap B cubed end-fraction σmaxsigma sub m a x end-sub must be less than the allowable net soil bearing capacity ( qallq sub a l l end-sub ) provided by the geotechnical report. Step 3: Safety Against Overturning Vtotal=Vc+Wfcap V sub t o t a l

Mbase=2,500+(120×1.5)=2,680 kNmcap M sub b a s e end-sub equals 2 comma 500 plus open paren 120 cross 1.5 close paren equals 2 comma 680 kNm Calculate the eccentricity ( ) of the total vertical load:

): The twisting force generated when the crane slews (rotates) its jib with a heavy load. 3. Step-by-Step Calculation Example: Pad Foundation 600 kNm |

q=VtotalA±MbaseZq equals the fraction with numerator cap V sub t o t a l end-sub and denominator cap A end-fraction plus or minus the fraction with numerator cap M sub b a s e end-sub and denominator cap Z end-fraction

| Load type | Value | |-----------|-------| | Vertical load ( V_k ) | 950 kN | | Horizontal load ( H_k ) | 75 kN (wind + slewing) | | Overturning moment ( M_k ) | 2,600 kNm |