Dating Buildings

Question 1

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

Answer 1

1960

Question 2

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

Answer 2

Gusset plates

Question 3

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

Answer 3

Oriented Strand Board

It breaks down easily with water exposure

Question 4

Which is more stable, lightweight trusses or conventional framing?

Answer 4

Conventional framing

Question 5

What is a collar tie?

Answer 5

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

Question 6

What year were gusset plates patented?

Answer 6

1959

Question 7

What are 4 characteristics of commercial trusses?

Answer 7

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

Question 8

What are 4 characteristics of residential trusses?

Answer 8

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

Question 9

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

Answer 9

Un-reinforced masonry

Question 10

Higher pitched roofs also mean a bigger ___ ___

Answer 10

Attic space

Question 11

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

Answer 11

8 to 12

Question 12

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

Answer 12

Living areas

Question 13

What is a concern of having a wooden floor?

Answer 13

Falling through

Question 14

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

Answer 14

Utilities

Question 15

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

Answer 15

Dead load

Question 16

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?

Answer 16

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

Question 17

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

Answer 17

Block/red brick construction

Question 18

What kind of problem could a steel window cause?

Answer 18

Escape may be difficult because of steel mullions

Question 19

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

Answer 19

Dropping large sections of ceiling

Question 20

What was the typical construction of 60s style buildings?

Answer 20

Frame or block walls

Question 21

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

Answer 21

Prefabricated trusses
Gusset plates
2x4 construction
No ridge beams

Question 22

Drywall provides easy ____

Answer 22

Breaching

Question 23

2 characteristics of aluminum windows are…

Answer 23

Easy breaching

Self ventilation

Question 24

From 1980 to current buildings, what becomes critical?

Answer 24

Elapsed time

Question 25

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

Answer 25

OSB

TJI

Question 26

What is the hazard with flex duct?

Answer 26

Extreme entanglement hazard

Question 27

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

Answer 27

2x4

Question 28

Study all the pictures in the power point

Answer 28

There’s a lot of them