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WorksheetsPLTW CEA 3.1.6 Commercial Floor Systems
Total questions: 20
Worksheet time: 10mins
Which type of precast concrete floor is shown in the image?
Solid core
Hollow core
Single T
Double T
What is the process called where concrete floors are formed, reinforced, and cast in place?
Precast Concrete
Cast-in-Place Concrete
Reinforced Concrete
Prestressed Concrete
For a slab thickness of 3 1/2 inches, the recommended Welded Wire Fabric (W.W.F.) is ______.
W1.4xW1.4
W2.1xW2.1
W1.4xW1.7
W1.4xW1.5
What is one reason to avoid shoring in concrete floor design?
It adds to the cost of construction.
It reduces the cost of construction.
It increases the strength of the floor.
It decreases the number of spans.
Which of the following is NOT correct about precast concrete floors?
Formed and cast off-site
Transported to the site
Installed in the structure
Made on-site
In low rise commercial buildings, floor systems may resemble residential framing using which materials?
Wood or light-gauge steel
Reinforced concrete
Steel
What is the primary purpose of shoring in concrete framing construction?
To permanently support the structure
To provide temporary stabilization during construction
To serve as an aesthetic feature
To reduce the cost of materials
What is the definition of load in the context of concrete floor design?
The distance between supports
The force applied to the floor
The weight of the concrete
The height of the building.
In many larger commercial buildings, floors are constructed with ________.
Wood
Light-gauge steel
Reinforced concrete
Plastic
What is the weight per square foot (WT PSF) for a deck type 18?
1.95
2.56
3.25
0.0295
What do structural engineers use load-span tables for?
To select structural elements
To calculate material costs
To design electrical systems
To plan interior layouts.
What is the most efficient composite floor slab to span 8ft 6in and carry an applied load of 220 psf?
3.5-inch slab on Deck Type 16
4-inch slab on Deck Type 18
4.5-inch slab on Deck Type 22
3-inch slab on Deck Type 14
Using precast concrete floors can ______ both construction cost and build time.
increase
reduce
maintain
ignore
What is the most efficient composite floor slab to span 7ft and carry an applied load of 250 psf?
3.5-inch slab on Deck Type 18
4-inch slab on Deck Type 20
4-inch slab on Deck Type 18
3.5-inch slab on Deck Type 20
What is a 'Slab on Grade' in commercial ground floor construction?
A type of roofing
A cast-in-place concrete slab poured directly on the ground
A type of wall insulation
A type of flooring material.
Based on the live load and the span, you can choose the floor design that requires the least amount of ______.
Time
Material
Labor
Space
What is one advantage of cast-in-place concrete floors?
Cost-effectiveness
Flexibility in building shape
Speed of construction
Aesthetic appeal
For a slab depth of 4" and a deck type of 22, the live load for a span of 8 ft is ____.
197
170
147
180
What is the allowable unshored clear span for a slab depth of 3 1/2", a deck type of 18, and a 2 span length?
9-0
11-3
10-4
10-1
In concrete floor design, 'Span' refers to the ______.
weight of the concrete
distance between supports
height of the building
thickness of the floor
