c49 Tree and Palm

what are the main characteristics of carabiners used in tree work?

Self-closing, self-double-locking, and able to withstand a 5,000-lb load

rigging branches

involves setting up ropes, slings, and pulleys to safely cut and lower limbs without damaging nearby property or structures.

ppe

Personal protective equipment

One employee can complete 4 tree installations in 8 hours. At the same rate, how many trees can that employee install in 12 hours?

6 trees

A circular planting area has a radius of 10 feet. Using π = 3.14, approximately how many square feet is the area?

314sq ft

A crew has 2 employees. Each employee can dig 4 tree holes in 8 hours. If the labor rate is $42 per hour per employee, what would it cost to dig 24 tree holes?

2 employees × 4 holes = 8 holes per 8 hours

24 holes ÷ 8 = 3 work periods

3 × 8 hours = 24 hours

2 employees × 24 hours × $42 = $2,016

A contractor is estimating the labor for removing trees. One employee can remove 3 trees in 6 hours. At the same rate, how many trees can 2 employees remove in 12 hours?

• Rate per employee: 3 trees ÷ 6 hours = 0.5 trees per hour per employee.

• Total labor hours available: 2 employees × 12 hours = 24 total labor hours.

• Total trees removed: 24 hours × 0.5 trees per hour = 12 trees.

A contractor needs to estimate the labor cost for digging 18 tree holes. Two employees can each dig 3 holes in 6 hours. If the labor rate is $40 per hour per employee, what is the total labor cost?

$960

Which location would be the BEST choice for planting a tree that does not tolerate poorly drained conditions?

Well-drained soil

. A tree worker needs to lower a large branch to the ground while maintaining control of its descent. Which operation is BEST suited for this task?

Rigging

A crew of 2 employees can remove 4 trees in 8 hours. At the same rate, how many trees can the same crew remove in 20 hours?

10 trees

A contractor charges $50 per hour per employee. A three-person crew works 6 hours. What is the total labor cost?

$900

A contractor estimates a palm-pruning project involving 18 palms. A three-person crew can prune 6 palms in 2 hours. Each employee earns $40 per hour. At the same production rate, what is the total labor cost?

$720

A crew must remove a tree near a structure. Before selecting the removal method, what should the contractor evaluate FIRST?

Potential hazards and site conditions affecting the removal

A tree has several dead branches, but the client also wants to reduce interference with a nearby building. Which approach BEST addresses both needs?

Select pruning cuts that address deadwood and clearance objectives

A contractor estimates a removal project with 4 employees working 5 hours each. Labor costs $32 per employee-hour, and equipment rental costs $280. What is the estimated combined labor and equipment cost?

$920

A crew is preparing to remove a tree. Which location is the BEST choice for an escape route?

A predetermined clear path away from the falling tree

A contractor notices that a palm has accumulated dead fronds and other material. Which action BEST represents a maintenance need?

Assessing and performing appropriate palm maintenance

During elevated tree work, which consideration is MOST important before a worker begins the task?

Whether the worker and equipment are appropriate for the elevated work and hazards

A crew of 3 employees can install 9 trees in 6 hours. At the same production rate, how many labor-hours are required to install 15 trees?

30 labor hrs