NHIE Home Inspection Manual Structural - Floor System Actual
Questions and Correct Answers
Q1
What is the uniform live load for sleeping rooms?
Answer: 30 PSF
Q2
What is the uniform live load for other rooms?
Answer: 40 PSF
Q3
What is the max allowed deflection under the uniform load?
Answer: L/360
L is joist, truss, or beam span in inches
I.e., A 144 inch beam may not bend more than about 3/8 inch (144/360=.4 or 3/8")
Q4
What are examples of a point load?
Answer: Person walking across a room, a bathtub filled with water and a bather
Q5
How do you define point load?
Answer: A point load is refers to when a load is applied to a single, specific point on a structural
member
Q6
What are the 6 common wood species used for framing lumber?
Answer: Doug fir,
Hem fir,
Spruce,
Pine,
Fir, and
Southern pine
, Q7
How do wood grades work?
Answer: Rated by grades No. 1, No. 2, & No. 3
Highest grade is No. 1
No. 2 commonly used in residential framing
Q8
What are the 2 most common types of floor sheathing?
Answer: OSB
Plywood
Q9
What are dimensional lumber floor
Answer: 16 o.c. & 24 o.c
Q10
joist typically spaced at o.c.?
Answer: 12 o.c. used for stiff floor applications
Helpful saying
16-n-24 fo' the flo'
Q11
How much should a floor joist bear on wood?
Answer: 1 1/2 in
Q12
How much should a floor joist bear on concrete and masonry?
Answer: 3 in
Q13
In modern construction, should the sill plate be secured to the
foundation?
Answer: Yes
Questions and Correct Answers
Q1
What is the uniform live load for sleeping rooms?
Answer: 30 PSF
Q2
What is the uniform live load for other rooms?
Answer: 40 PSF
Q3
What is the max allowed deflection under the uniform load?
Answer: L/360
L is joist, truss, or beam span in inches
I.e., A 144 inch beam may not bend more than about 3/8 inch (144/360=.4 or 3/8")
Q4
What are examples of a point load?
Answer: Person walking across a room, a bathtub filled with water and a bather
Q5
How do you define point load?
Answer: A point load is refers to when a load is applied to a single, specific point on a structural
member
Q6
What are the 6 common wood species used for framing lumber?
Answer: Doug fir,
Hem fir,
Spruce,
Pine,
Fir, and
Southern pine
, Q7
How do wood grades work?
Answer: Rated by grades No. 1, No. 2, & No. 3
Highest grade is No. 1
No. 2 commonly used in residential framing
Q8
What are the 2 most common types of floor sheathing?
Answer: OSB
Plywood
Q9
What are dimensional lumber floor
Answer: 16 o.c. & 24 o.c
Q10
joist typically spaced at o.c.?
Answer: 12 o.c. used for stiff floor applications
Helpful saying
16-n-24 fo' the flo'
Q11
How much should a floor joist bear on wood?
Answer: 1 1/2 in
Q12
How much should a floor joist bear on concrete and masonry?
Answer: 3 in
Q13
In modern construction, should the sill plate be secured to the
foundation?
Answer: Yes
