For intensively trafficked turfs, what material(s) makes the best root zone?
What will be an ideal response?
The number one problem with root zones for highly trafficked turfs is compaction. The primary design criterion is material that resists compaction. Sand is the material of choice. Fine sands make excellent root zone materials and should be selected for their uniformity of particle size. Sand by itself is not the only material used in root zones. Soil and/or organic matter, such as peat, is also added in small quantities to add water and nutrient-holding capacity to the final mix.
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Two systems are being considered for the same task. System 1 costs $63 000 new and is estimated to last four years. It will then have a salvage or trade-in value of $4 500. The cost to replace System 1 will be 3.5 percent more each year than it was the year before. It will cost $4 200 per year to operate and maintain System 1, payable at the end of each year. System 2 costs $120 000 to buy and will last eight years. It will have a salvage or trade-in value of $6 000. The cost to operate and maintain System 2 will be $2 400 per year, payable at the end of each year. Assume the task will be performed for eight years. Compare the two systems, state your basis of comparison, and include a cash-flow diagram. All interest rates are 4.0 percent per year unless otherwise stated.
What will be an ideal response?
Training credentials are used to confirm _____.
a. skill development b. electrical expertise c. age and educational background d. problem-solving ability
What prevents cold air from being circulated to the heated space during the defrost cycle?
A. The auxiliary heater turns on to "temper" the air. B. All of the dampers close automatically. C. The indoor fan motor turns off. D. Both a and b are correct.
What types of bedding should be used in the habitat?
What will be an ideal response?