Based on the uploaded image and details provided, here's a breakdown and suggested approach for calculating the values necessary to fill in the missing fields in the worksheet while adhering to the Canadian carpentry code standards.

Information Available

• Beam length: 24’6” (converted to 24.5 feet or 294 inches)
• Span of beam: 23.83 feet (or 285.96 inches)
• Number of columns: 2
• Other provided dimensions:
  • End bearing of the beam = 4 inches (this is the resting part on the supports).

Steps to Solve the Missing Fields

1. Distance Between Columns
   With a total beam span of 23.83 feet and 2 columns, the distance between columns is calculated as follows:
   Formula:
   $\text{Distance between columns} = \frac{\text{Total span length}}{\text{Number of spans}}$ Number of spans is (number of columns - 1), which is 2 - 1 = 1.
   Substituting:
   $\text{Distance between columns} = \frac{285.96 \, \text{inches}}{1} = 285.96 \, \text{inches or 23.83 feet}.$

   Answer: 285.96 inches (23.83 feet).

2. Quarter Point Measurement
   The quarter points divide the beam span into four equal parts:
   Formula:
   $\text{Quarter point} = \frac{\text{Total span length}}{4}$
   Substituting:
   $\text{Quarter point} = \frac{285.96 \, \text{inches}}{4} = 71.49 \, \text{inches (5.96 feet)}.$

   Answer: 71.49 inches (5.96 feet).

3. Additional Calculations
   These fields may vary depending on particular code requirements (e.g., load per column, nailing specifics), but here's an assumption for basic details:

   • Use 2x6 stock for beam assembly.
   • Top edges of beam plies should be aligned for full distribution and support.

4. Built-up Beam Plan
   Follow the "Instructions" section to construct the plan:

   • Ensure columns are plumb and braced.
   • All nailing must meet code requirements (specific nailing schedule outlined in the building code book).
   • Double-check quarter-point spacing for equal beam distribution.

Suggestions:

Consult the Canadian National Building Code's carpentry section for the specific nailing schedule for built-up beams, especially for 2x6 laminations.

Do you want further clarification or details on this process? Below are 5 follow-up questions that might expand this topic:

1. How do you calculate the load each column will support based on this beam length?
2. What is the recommended nailing schedule for 2x6 lamination construction?
3. How is the height of the sawhorse factored into the beam’s assembly and placement?
4. What additional safety protocols apply when assembling built-up beams as per Canadian code?
5. How is the "foundation wall spacing" used to ensure column placement accuracy?

Tip: Always double-check your beam span, end-bearing length, and column alignment to prevent structural issues during construction.