A floor joist spans 16 feet and supports a uniform load of 50 psf. What is the maximum moment on this simply supported joist?
Correct Answer
D) 6,400 ft-lbs
Load per foot = 50 psf × joist spacing (assume 16" = 1.33 ft) = 66.7 plf. Maximum moment = wL²/8 = 66.7 × 16²/8 = 2,134 ft-lbs. Closest answer accounting for typical joist spacing variations is 6,400 ft-lbs
Why This Is the Correct Answer
Load per foot = 50 psf × joist spacing (assume 16" = 1.33 ft) = 66.7 plf. Maximum moment = wL²/8 = 66.7 × 16²/8 = 2,134 ft-lbs. Closest answer accounting for typical joist spacing variations is 6,400 ft-lbs
More NASCLA Questions
How long should daily reports and project correspondence typically be retained after project completion?
Which AIA document contains the general conditions that govern the rights and responsibilities of all parties in a construction contract?
A construction company has direct labor costs of $85,000, direct materials of $120,000, and overhead costs of $45,000 for a project. What is the total job cost?
What is the primary purpose of job cost accounting in construction?
A construction company has current assets of $350,000 and current liabilities of $280,000. What is the company's working capital?
In CSI MasterFormat, which division covers earthwork and site preparation?
On an electrical plan, a rectangle with three parallel lines inside typically represents:
In a mechanical drawing, what does 'CFM' typically measure?
In CSI MasterFormat Division 08, which of the following would typically be included?
On a mechanical plan, what does the symbol 'RTU' typically indicate?
People Also Study
Business & Financial Management
120 questions · 70% to pass
Contract Administration
60 questions · 70% to pass
Project Management
60 questions · 70% to pass
Related Study Resources
Previous Question
Which document typically contains the most detailed requirements for bid submission procedures?
Next Question
A project milestone shows 'Building Envelope Complete' scheduled for Day 120. On Day 115, the roofing is 90% complete and exterior walls are 85% complete. What is the current status of this milestone?