NHIE Home Inspection Manual: Structural - Floor System
Exam with all Correct & 100% Verified Answers |Actual
Complete Update |Already Graded A+
What is the uniform live load for sleeping rooms? ✔Correct Answer-- 30 PSF
What is the uniform live load for other rooms? ✔Correct Answer-- 40 PSF
What is the max allowed deflection under the uniform load? ✔Correct 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")
What are examples of a point load? ✔Correct Answer-- Person walking across a room, a
bathtub filled with water and a bather
How do you define point load? ✔Correct Answer-A point load is refers to when a load is
applied to a single, specific point on a structural member.
What are the 6 common wood species used for framing lumber? ✔Correct Answer-1) Doug
fir,
2) Hem fir,
3) Spruce,
4) Pine,
5) Fir, and
6) Southern pine
How do wood grades work? ✔Correct Answer-- Rated by grades No. 1, No. 2, & No. 3
- Highest grade is No. 1
- No. 2 commonly used in residential framing
What are the 2 most common types of floor sheathing? ✔Correct Answer-1) OSB
2) Plywood
What are dimensional lumber floor joist typically spaced at o.c.? ✔Correct Answer-- 16 o.c. &
24 o.c.
- 12 o.c. used for stiff floor applications
Helpful saying:
- 16-n-24 fo' the flo'
How much should a floor joist bear on wood? ✔Correct Answer-- 1 1/2 in.
, How much should a floor joist bear on concrete and masonry? ✔Correct Answer-- 3 in.
In modern construction, should the sill plate be secured to the foundation? ✔Correct
Answer-- Yes
What width bolts are needed to secure the sill plate to the foundation? ✔Correct Answer-- At
least 1/2 in.
Can straps be used to secure the sill plate to the foundation? ✔Correct Answer-Yes, if they are
specifically made for that purpose.
How far apart should the sill plate bolts or straps be placed? ✔Correct Answer-- 6 ft min
- Washer & fully tightened nut required
How far from the edge should a sill plate bolt or strap be located? ✔Correct Answer-- 1 ft max
- 1/2 in. bolts not closer than 3.5 in. to plate edge
- Bolts/straps installed in middle 1/3 of plate
Attaching a full depth rim joist where the joist bear on the foundation is called? ✔Correct
Answer-- Blocking
Floor joists from opposite sides that meet over an interior wall or beam should lap at least
________ inches? ✔Correct Answer-- 3
Note:
- Joist should be fastened to each other
What is the purpose of bridging joists? ✔Correct Answer-- Prevent twisting
Bridging is required when a joist is _____ in. x _____ in. or larger? ✔Correct Answer-- 2x12
and larger
- Although it is common on smaller
When a floor system cantilevers & supports a load bearing wall, the back-span should be at least
______ ft. for every _____ ft.? ✔Correct Answer-- At least 3 feet for every 1 feet
When a floor system cantilevers & supports an exterior deck, the back-span should be at least
______ ft. for every _____ ft.? ✔Correct Answer-- At least 2 feet for every 1 feet
A minimum of ____ trimmer joists are connected together on each side of a floor opening?
✔Correct Answer-- 2 trimmer joists
Exam with all Correct & 100% Verified Answers |Actual
Complete Update |Already Graded A+
What is the uniform live load for sleeping rooms? ✔Correct Answer-- 30 PSF
What is the uniform live load for other rooms? ✔Correct Answer-- 40 PSF
What is the max allowed deflection under the uniform load? ✔Correct 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")
What are examples of a point load? ✔Correct Answer-- Person walking across a room, a
bathtub filled with water and a bather
How do you define point load? ✔Correct Answer-A point load is refers to when a load is
applied to a single, specific point on a structural member.
What are the 6 common wood species used for framing lumber? ✔Correct Answer-1) Doug
fir,
2) Hem fir,
3) Spruce,
4) Pine,
5) Fir, and
6) Southern pine
How do wood grades work? ✔Correct Answer-- Rated by grades No. 1, No. 2, & No. 3
- Highest grade is No. 1
- No. 2 commonly used in residential framing
What are the 2 most common types of floor sheathing? ✔Correct Answer-1) OSB
2) Plywood
What are dimensional lumber floor joist typically spaced at o.c.? ✔Correct Answer-- 16 o.c. &
24 o.c.
- 12 o.c. used for stiff floor applications
Helpful saying:
- 16-n-24 fo' the flo'
How much should a floor joist bear on wood? ✔Correct Answer-- 1 1/2 in.
, How much should a floor joist bear on concrete and masonry? ✔Correct Answer-- 3 in.
In modern construction, should the sill plate be secured to the foundation? ✔Correct
Answer-- Yes
What width bolts are needed to secure the sill plate to the foundation? ✔Correct Answer-- At
least 1/2 in.
Can straps be used to secure the sill plate to the foundation? ✔Correct Answer-Yes, if they are
specifically made for that purpose.
How far apart should the sill plate bolts or straps be placed? ✔Correct Answer-- 6 ft min
- Washer & fully tightened nut required
How far from the edge should a sill plate bolt or strap be located? ✔Correct Answer-- 1 ft max
- 1/2 in. bolts not closer than 3.5 in. to plate edge
- Bolts/straps installed in middle 1/3 of plate
Attaching a full depth rim joist where the joist bear on the foundation is called? ✔Correct
Answer-- Blocking
Floor joists from opposite sides that meet over an interior wall or beam should lap at least
________ inches? ✔Correct Answer-- 3
Note:
- Joist should be fastened to each other
What is the purpose of bridging joists? ✔Correct Answer-- Prevent twisting
Bridging is required when a joist is _____ in. x _____ in. or larger? ✔Correct Answer-- 2x12
and larger
- Although it is common on smaller
When a floor system cantilevers & supports a load bearing wall, the back-span should be at least
______ ft. for every _____ ft.? ✔Correct Answer-- At least 3 feet for every 1 feet
When a floor system cantilevers & supports an exterior deck, the back-span should be at least
______ ft. for every _____ ft.? ✔Correct Answer-- At least 2 feet for every 1 feet
A minimum of ____ trimmer joists are connected together on each side of a floor opening?
✔Correct Answer-- 2 trimmer joists
