Batter Boards/ Concrete Flashcards
What are the four layers of construction?
Site/building, foundation, substructure, superstructure
What are the squaring methods?
Carpenters square
Diagonal method (most accurate)
3-4-5
What are the three major components of concrete?
Water
Aggregate
Portland cement
What are the five types of Portland cement?
Type I Normal Portland Type II Modified Type III High Early Type IV Low Heat Type V Sulfate Resistant
What is the cure time for Type I?
28 days
What is the cure time for Type II?
45 days
What is the cure time for Type III?
7 days
What is the cure time for Type IV?
90 Days
What is the cure time for Type V?
60 Days
What is an accelerator for cement?
Calcium Chloride
How heavy are bags?
94 Lbs
1 Cubic ft
How heavy are barrels?
376 lbs
4 bags
What are the types of concrete?
Reinforced
Prestressed
Precast
Lightweight
What are the types of construction joints?
Control joint
Expansion joint
Construction joint
How do you find Project Volume (PV)?
PV= L x W x H x number of structures
How do you find Loss Factor (LF)?
LF = PV x (Loss Factor) (<5400 cu ft = 1.1) (> 5400 cu ft = 1.05)
How do you find loose volume?
LV = LF x 1.5
How do you find the number of bags of cement?
1/6 x LV = number of bags
How do you find cu ft of sand?
2/6 x LV = Sand cu ft
How do you find cu ft for gravel?
3/6 x LV = Gavel cu ft
How do you find gallons of water?
8 gal per bag of cement
What materials are forms normally made from?
Wood
Metal
Earth
Fiber
What are the elements of wooden forms?
Sheathing Studs Wales Strong backs Braces Shoe plates Spreaders Tie wires
What are the finishing operations?
Floating
Troweling
Brooming
What are the three major components of concrete?
Water. Aggregate (60% - 80% total vol) Portland Cement
What are the four types of concrete?
Reinforced. Pre-stressed. Pre-cast. Light weight.
