L6/7 Quizzes Flashcards
High early strength concrete is known as type _
III
The first pass made towards levelling the surface of a newly poured concrete slab is called _
Screeding
The on-site test to test for a concrete mix’s wetness and workability is called a _ test
Slump
T/F When placing concrete using a crane and bucket, formwork is NOT required
False
In order to ensure that concrete reaches its design strength, it needs to be kept moist for AT LEAST _ days
7
Given concrete’s zero design strength in terms of tension and shear, _ are required to be installed near the points of support to handle the shear stresses
Stirrups
In casting a site cast concrete wall, _ _ penetrate through the formwork and prevent the forms from bursting outwards or collapsing inwards
Form ties
T/F A limitation of one-way structural slab is that the columns must be placed in square or near-square configurations
False
A one way floor system that seeks to reduce floor-to-floor heights is called a _ slab
Banded
As a method for strengthening the slab to column connection, the waffle slab features _, which form the same purpose as drop panels in flat slabs
Heads
T/F Arguably the best solution for minimising the floor-to-floor height of a high-rise building is a two-way flat plate
True
Lift-slab construction uses which type of site cast concrete floor framing system (solid, banded, ribbed, flat, flat plate, waffle slab, none)
Flat plate
L-shaped and inverted tee girders feature _, which support slabs or beams
Ledger
In order to avoid problematic concrete-to-concrete connections, _ _ are installed to separate pre-cast framing elements
Bearing pads
T/F A concrete topping creates an important diaphragm within pre-cast framing systems that works towards resisting lateral forces
True
The slope of a low-slope roof needs to be at least _ %
2
When roof insulation is placed between the membrane and the deck, _ vents are needed to prevent insulation decay and membrane blisters
Topside
T/F From top to bottom, the correct order of elements in a protected membrane roof are: ballast, membrane, insulation and deck
False
Which method for creating roof slope is generally NOT suitable for large, expansive roofs?
Roof structure contains slope eg. truss
At four times the strength of annealed glass, _ glass forms small square sections when shattered
Tempered
Which of the following is NOT a primary function of cladding?
- Keeping water out
- Weathering gracefully
- Controlling light
- Controlling radiation of heat
- None of the options
Weathering gracefully
The force capable of moving water through an opening which can be mitigated by including a properly placed drop is called
Surface tension
A _ is a compartmentalised cladding solution that aims to neutralise air pressures through use of an air barrier
Rainscreen
In brick veneer cladding systems, water that passes through the porous brick travels down through an air cavity and is purged through _ _, or omitted vertical mortar joints
Weep holes
T/F Stick system is the mode of assembly of metal and glass cladding systems that is easily shipped in pieces (low bulk)
True
Which of the following is NOT a key benefit associated with air-entraining concrete?
- Improves workability
- Increases permeability
- Reduces damage caused by freeze/thaw cycles
- All of these are key benefits of air-entraining
Increases permeability
T/F It is critical to ensure adequate concrete cover around rebar in a concrete slab
True
T/F Precast concrete elements are nearly always prestressed at the casting plant to make them lighter and stronger
True
A flat plate concrete framing system facilitates minimum floor-to-floor heights and is an example of a
- One-way framing system
- Two-way framing system
- Three-way framing system
- None
Two-way framing system
Which roofing membrane types can potentially be associated with non-penetrating fasteners or welding machine?
Single-ply membranes
The primary strategy behind rainscreen systems in stopping rain from breaching the cladding involves
Air pressure differences
