A roofing crew's productivity rate is 25 squares per day in good weather but drops to 18 squares per day in adverse conditions. For a 450-square roof project scheduled during hurricane season, what is the estimated duration accounting for weather delays?
Correct Answer
C) 25 days
Using reduced productivity rate for hurricane season: 450 squares ÷ 18 squares per day = 25 days. This accounts for expected weather-related delays during the vulnerable season.
Why This Is the Correct Answer
Option C is correct because during hurricane season, contractors must plan using the reduced productivity rate of 18 squares per day rather than the optimal 25 squares per day. The calculation is straightforward: 450 total squares ÷ 18 squares per day = 25 days. This conservative approach accounts for the expected weather delays and interruptions that are common during Florida's hurricane season from June through November.
Why the Other Options Are Wrong
Option A: 30 days
Option D (30 days) overestimates the project duration and doesn't correspond to any logical calculation using the given productivity rates of 25 or 18 squares per day.
Option D: 22 days
Option B (22 days) appears to use an incorrect productivity rate or calculation method that doesn't align with either the good weather rate (25 squares/day) or the adverse weather rate (18 squares/day) provided in the problem.
Memory Technique
Remember 'Hurricane = Harder work' - always use the lower (adverse weather) productivity rate when scheduling during Florida's hurricane season (June-November).
Reference Hint
Florida Building Code Chapter 15 - Roof Assemblies and Rooftop Structures, and project scheduling sections in construction management references
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