3-4-5 Method
What is the purpose of using 3-4-5 method in construction?
To create a right angle
What is the first step in building layout?
Establishing corner points
What are batter boards used for in construction?
To establish and maintain building lines
What is the main purpose of achieving a right angle in construction?
To ensure the stability of a building
What type of foundation is often used with batter boards?
Which measurements are used in 3-4-5 method?
3 feet, 4 feet, 5 feet
How much smaller is the layout compared to the actual building size?
IT is not different
How high above the ground are batter boards typically set?
At least 6 inches
How can the right angle be extended further when using the 3-4-5 Method?
By pulling the string line tight and further through its newly established point
Why is it important to set foundation stakes correctly?
To ensure the building layout is accurate
How many points are used in the 3-4-5 method?
3
What tool is often to measure diagonal dimensions for building layout?
A tape measure
What should you check after placing the batter boards?
The dimensions and string lines
Which angle does the 3-4-5 Method help to create?
90 degree angle
What tool is commonly used to check the grade of the site during foundation work?
A rotary laser
IF we are doing the 3-4-5 method and we need longer dimensions to lay out the corner, what do we multiply each number by?
The same number for each one ie...if you multiply by 2 then all number are multiplied by that.
What is the purpose of pulling a triangle when laying out corners?
To ensure the dimensions are accurate
What is the purpose of adjusting the string lines after setting batter boards?
To avoid errors in construction later
What is the first measurement taken when laying out a right angle?
3 feet
Why might a survey crew be called to a building site?
To stake out property lines
What is the final outcome when the 3-4-5 method is applied correctly?
A perfect right angle
How many dimensions need to be checked to ensure the layout is square?
4 - each corner
What step is performed after setting up batter boards and adjusting strings?
Checking the layout for accuracy
Which of the following uses a perfect right angle?
a- sewing clothing
b- building a garage
c- painting walls
d- gardening
B- Building a garage
What is the last step before laying out post locations in foundation work?
Checking the layout for squareness