MT2 MSYS 2380 Flashcards
Minimum Headroom? (stairs)
1950 mm plus the height of one riser (150mm)
number of riser formula
Floor to floor height / height of a riser
Materials used for vertical circulation - stairs
Wood (Prefabricated , Residential)
Steel (Prefabricated, Most common for commercial)
Concrete (Cast on site, Costly, Rarely Used)
Who you must coordinate if you run through an exit stair?
A fire rated bulkhead (lowering available headroom or available width)
Services that serve the exit stair:
Electric wiring that service ONLY the exit stair
Stair pressurization ducts
Elevator Requirements
Not required for buildings less than 3 stories
Types of elevator?
Hydraulic
> operates using pneumatically pumped oil
> intended for low rise (<4-6 stories)
Electric traction
> operates using an electric motor
> better for mid to high rise
Who can pass through elevator machine rooms?
A fire rated bulkhead
Elevator Machine Room Temperature
typ 13 - 32 C
Types of fireplaces
Wood/solid fuel
Gas
Electric
Window frame materials
Wood
Aluminum
Vinyl
Steel
SHGC
Solar Heat Gain Coefficient
> Larger number means more heat gain
Door Coordination
Door grilles are specified by mechanical but coordinated with architectural
Basic Ingredients of concrete
Cement
Water
Aggregate
Fresh concrete properties
Important for foundation
Hardened concrete properties
Important for structure
Additional rebar
used in columns
Shallow foundations
cheaper
less strength
need good soil
Deep foundations
More expensive
Used on high rise
deep piles
drilled piers
Deep foundation - drilled piers vs piles
Piles are better in very wet areas
Pile driving is very loud
Piers require a cure time. Piles can just be tamped into place
Piles cause vibrations during install
Reinforced concrete
rebar used to add strength
Prestressed - post tensioned
tension elements installed prior to pour
Concrete formwork - Materials
Wood
Steel
Aluminum
GFRP (Glass fibre reinforced plastic)
Joist
connects to beams
Beam
connects to columns
SOG
Ground supported concrete slabs
> isolated concrete slabs
- Control, Isolation, and Construction joints
> stiffened concrete slabs
What is a deadload?
weight of the slab
When coordination with mechanical about concrete slabs, elevated slabs, beam supported floors, what is shown on the structural plan?
Slab thickness
Slab bands, beams
Slab band
It is a wide beam along a column
When determining the concrete fire resistance what is it based on?
thickness
Types of Masonry
Clay masonry
>uses clay brick
Concrete masonry
>uses concrete blocks
Both units bonded via MORTAR
Mortar Materials
Binding agent
Filler
Water
How to specify mortar?
Done by structural
Specified by either
> performance
> mix
Masonry bricks - Types
Facing bricks
Building bricks
Paving bricks
Additives used to enhance performance (alloy steel)
Manganese - slow cooling
Chromium - high corrosion
Molybdenum - combined
HSS
Hollow structural steel
> Inexpensive framing material
> Used for mounts of mech equipment
Only method allowed is Welds
OWSJ
Open web steel joist
What are the options for steel corrosion?
Hot dip galvanized
Acrylic epoxy
Who reviews the Steel construction drawings?
Reviewed by architect and structural engineer
Where should a damper with a fire protection rating be installed?
In ducts or air-transfer openings that penetrate an assembly
Fire Dampers Waived (Exemptions)
Ducts or air-transfer openings that penetrate a vertical fire separation not required to have a fire-resistance rating
Smoke Dampers Waived
Smoke dampers is permitted to be waived for ducts that serve commercial equipments in which all inlet and outlet openings serve not more than one fire apartment
FACP
Fire Alarm Control Panel
Who can pass through elevator machine rooms?
A fire rated bulkhead
