Question of the Week 07/26/15

Inspection Education Topics Inspection Education & Training
1

Must be an interNACHI member to win.

The Awards Committee panel member posts a question in the Education and Training section, once per week at a random time on a random day.

All parts of the question must be answered in one post. You may not post more than once. The first(and only) post counts, get it right the first time.

Do not edit your posts as the Awards Committee can see that time stamp in the edited post…it just makes our sorting it out more cumbersome.

First correct answer (as judged by the question poster, and the award committee) wins. The lucky winner gets one case of “Now that you’ve had a Home Inspection Books” shipped to you. Courtesy of Nick G. Your prize will be shipped to the address on file.

What is the minimum height from exterior grade, earth & concrete or pavement, until preservative treatment is required of the wood sill, sheathing and wall framing?

There are two answers to this question.

Good Luck.

2

There is no minimum requirement, however 10-12" is recommended

3

8" from grade, anything less than 6" needs to be treated

4

Wood joists within 18" and wood girders within 12" in a crawl space

5

Wood treated plates are required for all “concrete” contact regardless of height from grade unless a vapor barrier is used to separate the contact. Treated lumber has different classes and some are not intended for ground contact so they type is also relevant. If a vapor barrier is used then the standard plate can be used if 8" above grade

6

Wood joists (or other wood) closer than 18 inches and wood girders closer than 12 inches require protection against decay.

All wood framing in contact with concrete or other masonry that are less than 8 inches from the ground require protection from decay.

Sills and sleepers on a slab that is direct contact with the ground (unless there is a moisture barrier under it) require protection from decay.

7

Good Google searching Juan…

Wood joists or the bottom of a wood structural floor when closer than 18 inches
(457 mm) or wood girders when closer than 12 inches (305 mm) to the exposed ground in
crawl spaces or unexcavated area located within the periphery of the building foundation.
2. All wood framing members that rest on concrete or masonry exterior foundation
walls and are less than 8 inches (203 mm) from the exposed ground.

8

It wasn’t a Google search. I have the VA code book on my phone.

9

Irc section r319
protection against decay

10

0 and 8 inches.

11

What is the minimum height from exterior grade, earth & concrete or pavement, until preservative treatment is required of the wood sill, sheathing and wall framing?

There are two answers to this question.

I haven’t seen the right answer yet. :slight_smile:

12

Did you mean that you haven’t seen both right answers in the same post, yet? :slight_smile:

13

6 inches for wood siding, sheathing and wall framing

Sills are direct contact unless separated by an impervious moisture barrier.

14

Does it matter as long as he is right?

15

Yes:)

16

Well, lets try this again and see if we can get a winner here.

This time with the same question, fill in the blanks.

Protection of wood and wood based products from decay shall be provided in the following locations;

Wood siding, sheathing and wall framing on the exterior of a building having a clearance of less than __ inches from the ground or less than __ inches measured vertically from concrete steps, porch slabs, patio slabs, and similar horizontal surfaces exposed to the weather.

17

6", 2"

18

Good job.

Ans;= R317.1 Par. 5

Shipment of the books will be initiated. :slight_smile:

19

Cool, thanks.:smiley: Are the FL books still available?

20

I’ll have to ask the committee.