Project Phase 4

 

Part 4A - Photo Scavenger Hunt

Visit a local business, like Lowes or Home Depot, and do the following.

  1. Locate one piece of plywood sheathing.  (You may want to pick a panel that has already been turned over in order to more easily photograph the grade stamp.)
    1. Photograph the panel.
    2. Does the panel have wood filler or veneer plugs?  If so, photograph one repair.
    3. Measure the length, width and thickness.  Is it sized for spacing?  If you borrow a tape measure from the Tools department, please return it.
    4. Count the number of plies.
    5. Count the number of layers.
    6. Photograph the grade stamp and decode the information.
  2. Locate one piece of OSB sheathing or Sturd-I-Floor.
    1. Photograph the panel.
    2. Measure the length, width and thickness.  Is it sized for spacing?
    3. Does it have discernable layers?  If so, photograph an edge of the panel where the layers are visible.
    4. How does the price compare to plywood sheathing of similar thickness (e.g. ratio of OSB price to plywood price)?
    5. Photograph the grade stamp and decode the information.
  3. Locate one piece of hardwood plywood (e.g. oak, maple, birch).
    1. Photograph the panel.
    2. What is the stated species?
    3. What is the stated thickness?  You do not have to measure it.
    4. How does the price compare to plywood sheathing of similar thickness?
    5. How does the appearance compare to plywood sheathing (e.g. is it sanded, does it have knots, etc)?
    6. Does it have a grade stamp?  You do NOT have to photograph the grade stamp.
  4. Locate one piece of wood siding.
    1. Photograph the panel.
    2. How does the price compare to plywood sheathing of similar thickness?
    3. Does it have a grade stamp?  You do NOT have to photograph the grade stamp.
  5. Locate one piece of underlayment (not sturd-i-floor).
    1. Photograph the panel.
    2. How does the price compare to plywood sheathing of similar thickness?
    3. Does it have a grade stamp?  You do NOT have to photograph the grade stamp.
  6. Locate one piece of particle board.
    1. Photograph the panel.
    2. How does the price compare to plywood sheathing of similar thickness?
    3. Does it have a grade stamp?  You do NOT have to photograph the grade stamp.

 

 

Part 4B - Panel Selection for Sheathing Loads

Select the appropriate wood structural panel for the roof and floor(s) in your wood structure.  

1. Roof

State the (1) type of panel, (2) selected span rating, (3) thickness, (4) orientation, and (5) whether edge support is required.  You can refer to homework problems 8.19-20 as examples.  For the sample house you can assume the following.

Application roof rafters
Spacing 16 in. OC
Load D = 10 psf
S = 18 psf
Type of panel plywood or OSB sheathing (your choice)

2. Floor

State the (1) type of panel, (2) selected span rating, (3) thickness, (4) orientation, and (5) whether edge support is required.  You can refer to homework problems 8.21, 22 and 24 as examples.  For the sample house you can assume the following for both the first-floor and second-floor levels.

Application joists in floor system
Spacing 16 in. OC
Load D = 12 psf
L = 40 psf
Type of panel plywood or OSB sheathing or Sturd-I-Floor (your choice)

 

 

Part 4C - Diaphragms

Select one of the following options.  You do NOT need to do both.

Option 1:  Check the posted solution for homework problem 9.7 for errors.  Some of the numbers in the posted solution do not match the author's solutions manual.  If you find errors in the posted solution, recommend ways to correct it.

Option 2:  Analyze the diaphragm(s) in your wood structure.

 

 

Place the photographs and narrative in a Word document (or similar program).  Submit a printed or emailed report (or memo) by class time on Tuesday, April 30 Thursday, May 2.  Detailed calculations can be included in the body of the report or in appendices.