6 Concrete Flashcards
(32 cards)
What soil condition should footing be placed on
Virgin soil
What is the relationship between the footing thickness and the wall size
Following thickness = same 1:1.
What is the relationship between the footing width and the wall size
Footing width =double 2:1
What is the relationship for placement of a wall on a footing
Center
Know what a keyway is in the footing
Groove, in the footer, that the second pour locks into
What is the angle of keyway
15° or 30°
Where is the key way placed
Center
What determines the depth of a footing
Frostline
What are batterboards, and what are they used for
Batterboards are used for layout outside of excavation
What type of nails do you use in framework
Duplex double head nails
What do you have to establish before placing footing forms
Grade
What do you use to establish grade
Builder’s level laser or total station
What are the various parts of wall form
Whaler’s
stiffbacks,
ties
braces
stakes.
Which way are whalers
Horizontal
Which way are stiff backs
Vertical
How high are ties
The height of the wall
What degree our braces placed
45°
What are form lines
Used for architectural design
What tool is used to eliminate air pockets
A vibrator
How does a vibrator work
Air elimination via consolidation
What is the function of rebar
Add tensile strength
What is the weight of one cubic foot of concrete
4050lbs
What is the weight of one cubic foot of concrete
150lbs
How many cubic feet are in one cubic yard of concrete
27
