Concrete is poured into the forms as shown in Fig. P2.83 to produce a set of steps. Determine the weight of the sandbag needed to keep the bottomless forms from lifting off the ground. The weight of the forms is \(85 \mathrm{lb}\), and the specific weight of the concrete is \(150 \mathrm{lb} / \mathrm{ft}^{3}\).

Figure P2.83

Transcribed Image Text:

-3 ft- 8 in. risers Sand Open top- Open bottom. 10 in. tread