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Instructors Name: Mr. Landry

Carpentry Resources Week of 4/6 - 4/10 2020

 

Estimating Wall Framing Materials

 

Formulas:

1. Soleplate & topplate =( Length of the walls in feet x 3 ) / The length of the material used

     Example: A shed that measures 30' x 24'

 

                   - 30' + 30' + 24' + 24' = 108'

 

                   - 108' x 3 = 486'

 

                   - 486' / 12' = 40 1/2 or 41 boards 

Worksheet

 

1. A shed that measures 40' x 32'.  Material used is 12' boards.

 

2. A building that measures 50' x 18'.  Material used is 8' boards.

 

3. A club house that measures 20' x 10'. Material used is 10' boards

 

 

 

 

Carpentry Resources Week of 4/13 - 4/17

 

Estimating Wall Studs

 Step 1  Determine the length (in feet) of all the walls.

 Step 2  Multiply the length by 12 to convert feet to inches.

 Step 3  If the studs are 16'' O.C., divide the number of inches of wall by 16.

 

Formula:

1. The number of studs = ( the length of walls in feet x 12 ) / the distance between studs in inches

 

 

     Example:

  

     - A wall is 50' in length and the studs are 16" o.c

 

             - 50' x 12" = 600"

 

             - 600" / 16" = 37.5 or 38 studs

 

           Note: Round up to the nearest whole number.

 

     Worksheet

 

1. You have measured 250 ' of walls. The studs are at 16 " O.C ( on center). How many studs are needed to frame the walls?

 

2. The walls of a house measure 328 '. The studs are at 16 " O.C.  How many studs are needed to frame the walls?

 

3. You have to frame 600 ' of walls. The studs are at 24" O.C.  How many studs are needed to frame the walls?

 

 

 

Carpentry Rsources Week of 4/20 - 4/24

 

Estimating Window and Door Headers

Step 1  Use the architectural drawings to identify the number and size of each window and door.

Step 2  Add 3'" to the rough opening of each window and door.

Step 3  Double the length of each header.

Step 4  Combine the length of the header for each window and door (in inches).

 

Example:

 

  - A structure has 4 windows that are 24" wide and 3 doors that are 36" wide

 

     - 2" window + 3"  =  27"

   

     - 27" x 4 windows  =  108"

 

     That takes care of the windows

 

      - 36"doors + 3"  =  39"

 

      - 39" x 3 doors  =  117"

 

     That takes care of the doors

 

      Now add the windows (in inches) to the doors (in inches)

 

     - 108" + 117"  = 225"

 

      Now divide the total by 12 to get the length in feet and inches

 

     - 225" / 12  =  18.75 feet

 

 

  Worksheet

 

 1. A building has 6 windows that are 30" wide and 4 doors that are 36" wide.  How many feet of header are needed?

 

 2. A structure has 2 windows that are 48" wide, 3 windows that are 40" wide and 7 doors that are 32" wide. How many feet of header are needed?

 

 

Carpentry Resources for Week of 4/27 - 5/1

 

Estimating Ceiling Joist

 

 Step 1  Determine the span of the building.

 Step 2  Determine the number of joists based on the spacing and then add 1 for the end joist.

 Step 3  Multiply the span by the number of joists to determine the total length.  Add 3" per joist per splice where joists will be spliced.

 

 Example:  A building is 24' x 30'.  The ceiling joists will span across the short dimension (24').  The material being used is 14' boards.  The joists are

                  at 16" oc (on center).

 

           - Convert feet to inches                     

                                                                30' x 12" = 360"

 

           - Divide that by 16"                             

                                                                360" / 16" = 22 1/2 ( round up to 23)

 

           - Add 1 for the end joist                     

                                                                23 + 1 = 24

 

           - The 14' boards wil not span the width of the building, so multiply the last number by 2.

                                                                24 x 2 = 48

 

           - Now calculate the total length, adding 3" for each joist.

                                                               48 x 12' = 576'

          

           - Multiply the number of boards required by 3".

                                                               48 x 3" = 144"

 

           - Convert 144" to feet by dividing by 12

                                                               144" / 12 = 12'

     

           - Add the total length and the 3" overlap of the joists.

                                                               576' + 12" = 588'

 

 You will need 588' of material.

 

Worksheet

 

1. A shed is 16' x 12'. The cieling joists span the narrow dimension of the shed.  The material being used is 12' boards.  Joists are 16" oc.

    Calculate the total footage of the joists.

 

2. A building is 30' x 60'.  The ceiling joists span the narrow dimension of the building.  The material being used is 16' boards.  Joists are 16" oc.

    Calculate the total footage of the joists.

 

Carpentry Resources for Week of 5/4 - 5/8

 

 Definition:  Gable Roof - has two (2) slopes that meet at the ridge(center) to form a gable at each end of the building.  It is the most common type

                                        of roof because it is simple, economical, and can be used on any type of structure.

 

 

 Estimating Roof Material

 

   - Estimating Roof Rafters

 

     Step 1 Determine the length of a common rafter ( including the overhang).

     Step 2 Calculate the number of rafters needed based on the rafter spacing.

     Step 3 Add one (1) to the total.

     Step 4 Multiply the result by 2 to account for the two sides of the roof.

 

     Example: A gable roof measures 16' x 12' on one side.  A common rafter is 14' long.  The rafter spacing is 16" oc.  How many rafters are needed

                     for the roof?

 

                     1. Convert feet to inches                                        16' x 12" = 192"

 

                     2. Divide total by rafter spacing                              192" / 16" = 12 rafters

 

                     3. Add 1 board to the total boards                          12 = 1 = 13 rafters

 

                     4. Multiply by 2 for the two sides of the roof           13 x 2 = 26 rafters

 

                          - The total number of rafters needed is              26

 

 Worksheet

 

   1. A gable roof measuring 24' x 14' on one side.  A common rafter is 16' long.  Rafter spacing is 16" oc.  How many rafters are needed for the roof?

 

   2. A gable roof measuring 36' x 8' on one side.  A common rafter is 10' long.  Rafter spacing is 24" oc.  How many rafters are needed for the roof?

 

  Week of 5/11 - 5/15

 

  - Estimating Ridgeboard

 

    Step 1 Determine the lenght of the building onone side.

    Step 2 A more lenght for the gable overhang.

 

   Example: Astructure is 30' long with a gable overhang of 16". How long is the ridgeboard?

 

                   1. Determine building length                        30'

 

                   2. Add overhang to the building length        30' (building length) + (16" overhang x 2

 

                   3. Convert to feet and inches                       32'-8" long

 

 Worksheet

 

   1.  A gable roof measuring 30' x 14' on one side.  A common rafter is 16' long. Rafter spacing is 16" oc. The overhang on the gable roof is 2'.

 

          a How many rafters are needed for the roof?

 

          b. How long is the ridgeboard?