Using the resources provided in class, determine how many scrapers should be used and what the production rate will be in bank cubic yards $($bcy$)$ per hour. The material to be hauled is earth, wet. It has a swell factor of $0\mathrm{.}80$ and a unit weight of $3,200$ lb$/$bcy$.$ The expected rolling resistance for the well$-$maintained haul road is $+3\%.$ Assume a $0\mathrm{.}70-$min load time and that the average load will be $85\%$ of the heaped capacity. To account for both acceleration and deceleration, use an average speed of $6$ mph over a distance of $250$ ft$.$ Use a $55-$min hour efficiency factor. The total length of the haul is $3,100$ ft and has the following individual segments when moving from cut to fill: $700$ ft at a $+6\%$ grade $1,900$ ft at a $1\%$ grade $500$ ft at a $3\%$ grade You are required to select the appropriate scraper equipped with a push tractor $($excluding the use of the $631$E model$)$ for this operation. Ensure that any specifications utilized, such as scraper applicable weights or otherwise, are sourced from credible references and appropriately documented