Techn1cal RE5CUE #2 Flashcards
p 412- end
What are the simplest form of shoring system and easiest to construct? what do they consist of?-412
- vertical shores
- consist of soleplate, vertical struts, a header, and wedges or metal clamps or jacks
What must be installed for additional support once the struts are securely in place? - 412
diagonal supports or gusset plates
What shores are most often installed to stabilize two opposing walls? what do they consist of? -412
- horizontal shores
- consist of horizontal beams, struts, wall plates, wedges
which type strut or brace may be used to shore weakened window and doorway openings? - 413
vertical or horizontal struts or braces
What type of shores are most often used to brace freestanding walls that are unstable because of deformation or misalignment? - 414
raker shores
consist of wall plate, diagonal post, and soleplate (soleplate nailed to the ground)
At what angle are raker shores the strongest? what angle can they go up to? -414
strongest at 45* angle; can go up to 60* angle
how can they potential mechanical advantage of a lever be calculated? - 416
measure distance between load and the fulcrum and the fulcrum and where the force is applied.
- if force side 3 times longer than load side, lever = 3:1
What are the 3 classifications of levers? - 416
class 1: load on 1 end, force on other, fulcrum in the middle class 2: fulcrum at one end, force at other end, load in the middle class 3: load at one end, fulcrum at other end, force in the middle
What factors should responders consider during the planning of a lift that affect lifting operations? - 417
- influence of friction
- load’s center of gravity
- angle of attachment
- weight of the object
How can you reduce the amount of friction between two objects? -418
reduce the surface are between the two objects
when using a sling, the eye of the sling should be positioned to create an angle between the sling and the load of ______. -418
at least 45*
What actions should always be taken during heavy lifting operations to ensure maximum safety? -418
plan ahead
crib and stabilize often
work as a team
when should a brake system be in place on rollers? -418
before lowering the load onto the rollers
What safety equipment is needed while using powered or non-powered saws? -420
filter masks
goggles or safety glasses
hearing protection
what is the best method for reaching victims in light-frame buildings? -420
making a horizontal entry through existing cavities or through walls
how many floor joists can be cut to make an access hole, provided the joists’ supports appear undamaged. -421
max of 2 adjacent floor joists
when cutting a brick or block wall that may be incorporated into a light-frame structure, an ________ should be employed. -421
inverted triangle pattern
how many studs may be cut in a load bearing wall to permit passage of personnel? -422
no more than 1 stud unless shoring is provided (hole should be as small as needed in load bearing wall)
what is the leading cause of accidental traumatic death? -445
drowning
according to nfpa 1006, surface water rescue operations assume a flow rate of ________. -446
less than 1 knot (approx 1.15mph)
what level rescuers can make direct entry into the surface water environment with the intention to rescue victims? -446
level II rescuers
what should search team members be equipped with? -446
binoculars and have a pre-established method of communications (radio or cell phone)
what is the minimum initial ratio of tenders to rescuers? -447
one rope tender to one rescuer
communications methods for surface water rescue may include: -447
- face to face speaking
- radio and cell phones
- whistles
- hand signals
what are the guidelines for communicating via whistles in a water rescue environment? -448
1 whistle blast = stop/attention
2 whistle blasts = look upstream
3 whistle blasts = look downstream
3 long or repeated whistle blasts = emergency