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The Art Of Reading Buildings > Ch. 6 Alternative and Evolving Construction Trends > Flashcards

Ch. 6 Alternative and Evolving Construction Trends Flashcards

1
Q

Previously, buildings used a ___________approach, but now use a ________ approach

A

Prescriptive

Performance design

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2
Q

Lightweight steel advantages: (5)

A 
Reduced costs
Significant weight reduction
Ease of installation
Resistant to termites and mold
Non combustible to help satisfy codes
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3
Q

How thick is the steel used in LW steel construction?

A

1/8”

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4
Q

Components of a LW steel bldg:

A

C channel, H channel, sills, headers and joists

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5
Q

LW steel bldgs will get its strength from

A

The sheathing, usually OSB

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6
Q

Primary collapse concern for a LW steel bldg?

A

Floor collapse from a basement fire

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7
Q

Materials for ICF forms”

A

Cellular concrete
Cement bonded polystyrene beads
Cement bonded wood fiber (15%cement, 85%EPS)
Combo of 15%cement and 85% wood chips

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8
Q

3 ways to build and ICF wall

A

Flat panel
Post and Beam
Grid block

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9
Q

Flat panel ICF:

A

Most concrete and fire resistant
Low slump high aggregate concrete
Plastic or metal plates
80/20 concrete/EPS

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10
Q

Post and Beam ICF

A

40-60% concrete

Creates a P and B skeleton with some rebar

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11
Q

Grid Block

A

Legos with concrete in the middle
Least fire resistive
Least amount of concrete 20-30%

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12
Q

Fire concern for ICF

A

Though it’s supposed to not flame up, it will burn from fire around, causing pyrolization of EPS which is a petroleum product

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13
Q

Collapse concern for ICF

A

roof and floors,

Flat panel will hold longer than P and B and Lego blocks

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14
Q

What causes the strength in SIP panels

A

The synergy of being pressure laminated

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15
Q

2 types of straw bale buildings

A

Load bearing-Nebraska style

Non load bearing

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16
Q

How are straw bale buildings pinned together

A

Wire ties
Wood-bamboo
Sticks
Rebar

17
Q

Two ways to compress a Straw bale bldg

A

Just the weight of the roof

Compression straps

18
Q

Collapse threat of straw bale bldg

A

LW roof, especially Live roofs due to the load

19
Q

Advantages of straw clay bldg

A 
Durable
Cost effective
No special tools
Green
Good insulating 
Resistant to vermin, rot and fire
20
Q

What’s the biggest fire concern for a clay straw bldg?

A

Contents

Roof and and ceiling collapse is possible

21
Q

How much money has the ARRA allocated to Green building?

A

80 Billion fucking dollars

22
Q

Challenges of Green Building and firefighting

A

Alternative power
Unusual dead and live loads
Low mass synthetics
Recycled or repurposed materials

23
Q

Green building, like rammed earth brick, are efficient but can retain heat and products of combustion leading to

A

Flashover

24
Q

How far apart are the parallel studs in double wall construction

A

3 1/2”

R value of or more

Gap allows horizontal extension of fire

25
Q

When RSB sheathing is used for walls its applied with the foil side___________for roofs its_________

A

Out, inward

With 3/4” air space

26
Q

Soil depth of extensive live roof

Of intensive live roof

A

2-4”, limited maintenance

1 foot, regular maintenance

27
Q

4 elements of a live green roof

A

A building with strong roof system
Multiple membrane to protect the structure from water and drainage
A layer of soil
Planted veggies

28
Q

Electrochromic Windows

A

Require 1 volt to change the amount of light reflected, but they are harder to break

29
Q

How is AFM/OVE Green?

A

Reduced the amount of lumber waste

Reduces thermal bridging

30
Q

Spacing for studs in AFM

A

19.5”-24” instead of 16”

Single 2x4 for top plate

Nailing boards for exterior siding are 2 X 2

31
Q

How much less lumber does AFM use? Reduction in framing factor?

A

10 - 30%

15%- 25%

32
Q

What is AAC

A

Auto claved Aerated Concrete
Made from Portland cement, gypsum, water, expanding agents and air
1/5th of wt of CMU
Mostly air

33
Q

Other names for EWP

A

Manufactured board
Man made wood
Composite wood

34
Q

How much more weight can an FiRP carry over a regular beam?

A

Twice as much

35
Q

Homes are designed to give the occupants how long to get out?

A

15 minutes

The Art Of Reading Buildings (9 decks)

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