Lofts Flashcards
Lofts
What would a frontage of 25 feet or less indicate?
No interior columns
Lofts
What type of loft has four exterior load bearing walls?
Heavy timber
**Only other construction which has four loadbearing walls is bowstring truss
Lofts
What would a large piece of granite stone covering the sidewalk to curb line indicate?
Full Sidewalk vault
Lofts
Who approves the use of freight elevators?
IC
Lofts
When can you operate a stream into a shaft window?
Visible fire extending up the shaft
**Shaft when those will look identical to other windows
Lofts
How can you tell that a cast-iron column was cast properly?
You cannot
Lofts
Can cast iron columns with stand thermal stress?
Yes
However over longer periods of time it can fracture and fail:
at 1100° it loses 58% of its original strength
Lofts
Do cast iron columns regain their strength?
No, their strength lost is cumulative
Lofts
Do cast iron columns with stand eccentric loads?
No
Lofts
Can the failure of a single column cause collapse of all columns?
Yes - they must all line up vertically during construction, and therefore one can cause the collapse of all
Lofts
Which is strong and compression and tension? Cast iron or wrought iron?
Wrought iron is strong and compression and tension
Cast-iron is strong and compression but weak in tension
Lofts
Are segmental arch floors in new or old lofts
New
Lofts
Are square columns found on lower floors or higher floors?
Lower - round ones are found on upper floors.
Square are 20% stronger than round
Lofts
How do the floors run in a mill loft?
Front to rear
Lofts
Steel tension cables or rods (stars) can fail at how many degrees?
800
