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Flashcards in Dating Buildings Deck (28)
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1
Q

Around what year did construction go from conventional framing to lightweight trusses?

A

1960

2
Q

Making trusses was not a new thing, but what was new about them that made them lightweight?

A

Gusset plates

3
Q

What does OSB mean and what is a drawback of using it?

A

Oriented Strand Board

It breaks down easily with water exposure

4
Q

Which is more stable, lightweight trusses or conventional framing?

A

Conventional framing

5
Q

What is a collar tie?

A

A board that goes across an attic space toward the tip of the roof that provides extra support

Google it and it will show you what I mean

6
Q

What year were gusset plates patented?

A

1959

7
Q

What are 4 characteristics of commercial trusses?

A

Wide spans/wide spacings
Decreased interior partitions
High Ceilings
Exposed structural members

8
Q

What are 4 characteristics of residential trusses?

A

Wide spans
Trusses 24” on center
Increased interior partitions
Complex roof structures

9
Q

In 30s style buildings, an arch lintel could be an indication of…

A

Un-reinforced masonry

10
Q

Higher pitched roofs also mean a bigger ___ ___

A

Attic space

11
Q

In 30s style buildings, it was not uncommon for attic spaces to be __ to __ feet

A

8 to 12

12
Q

Since attic spaces were bigger in 30s style buildings, they tended to be converted into ____ ____

A

Living areas

13
Q

What is a concern of having a wooden floor?

A

Falling through

14
Q

Cloth wiring on insulators mean that ____ become a priority concern.

A

Utilities

15
Q

Skip sheathing style houses can have multiple layers of roofing which will result in an increased ___ ___

A

Dead load

16
Q

The type of ceilings on a 30s style building (Wood lath and plaster expanded wire/wire lath/tin ceiling) can be bad for firefighters for what reason?

A

It takes a lot of time and manpower to open up the ceiling

17
Q

What is the typical construction of a 50s style house?

A

Block/red brick construction

18
Q

What kind of problem could a steel window cause?

A

Escape may be difficult because of steel mullions

19
Q

In 50s style buildings, the introduction of foam to attics has the potential for…

A

Dropping large sections of ceiling

20
Q

What was the typical construction of 60s style buildings?

A

Frame or block walls

21
Q

Starting in 60s buildings, what were the 4 things that contributed to lightweight construction?

A

Prefabricated trusses
Gusset plates
2x4 construction
No ridge beams

22
Q

Drywall provides easy ____

A

Breaching

23
Q

2 characteristics of aluminum windows are…

A

Easy breaching

Self ventilation

24
Q

From 1980 to current buildings, what becomes critical?

A

Elapsed time

25
Q

What are 2 examples of engineered products that replace solid wood?

A

OSB

TJI

26
Q

What is the hazard with flex duct?

A

Extreme entanglement hazard

27
Q

On 1980 to present style buildings, it’s very possible that _____ is the biggest size of wood used in the construction of the building.

A

2x4

28
Q

Study all the pictures in the power point

A

There’s a lot of them