Air Air A B 2 ft C - 4 ft Air 5 ft 2 ft Water D Fig. P2.17 2.17 All fluids in Fig. P2.17 are at 20°C. = If p 1900 psf at point A, determine the pressures at B, C, and D in psf. Solution: Using a specific weight of 62.4 lbf/ft for water, we first compute PB and PD: 3 ft