G5 Flashcards

Install anchor bolts and metal in concrete

1
Q

What is a dowl?

A

short peice of steel used to connect two separate sections

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2
Q

How are L shaped anchor bolts placed when great accuracy is not needed?

A

stick in concrete after placement but before it sets (wet set)

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3
Q

What material is most bolt templates made of?

A

3/4 inch ply

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4
Q

What kind of forms used with dowels?

A

slab edge

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5
Q

what’s done to ensure uniform contact between the base of a machine and it’s concrete footing?

A

grouting

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6
Q

How can you protect anchor bolt threads during placement

A

wrap in tape or cover with heavy duty grease

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7
Q

What type of drawings used to find the exact location of machine bases bolts?

A

shop drawings

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8
Q

describe how-to make an expansion joint in a slab

A

smooth dowel in first, pour 1st, strip, fibre board , grease dowel, use expansion cap, pour 2nd

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9
Q

How are templates for anchor bolts positioned?

A

stringlines and gridlines

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10
Q

whats used to fasten pre cast concrete members together?

A

welding

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11
Q

list 2 types of inserts

A

tee bar and loop inserts

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12
Q

What 2 functions do anchor bolts provide?

A

holds building down and supports lateral movement

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13
Q

What kind of regret requires no cocking ?

A

pvc

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14
Q

What materials are manufactured reglets made from?

A

pvc &and metal

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15
Q

How are sewer covers held in place during concrete placement?

A

Held down by its own weight

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16
Q

why are trough forms held down with ballast?

A

to prevent the form from floating

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17
Q

How are trough forms held in position during concrete placement

A

ballast supported on brick and tied down or staked

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18
Q

What are sewer access covers and grates usually made from

A

cast iron

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19
Q

What material is used to shim manhole covers to elevation

A

metal shims

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20
Q

What are two methods of installing dock levelers?

A

pit mounted or cast in place

21
Q

What can be done to support the forms from floating as the concrete is being placed

A

must be braced or weighted down

22
Q

How are the forms held in place horizontally?

A

anchor the horizontal member by anchoring it to rebar with tie wire

23
Q

what’s used to support the end of the conduit at the dock leveler?

24
Q

list 4 things to check prior to pouring concrete

A

level, square, to the right height, built in the right location

25
what type of anchor is used with a lag bolt?
expansion screws
26
stress plates are used to fasten __________
insulation
27
which fastener can be used with pressure-treated lumber?
tapcon blue screw
28
What type of glues are used with adhesive fasteners
epoxy
29
What fastening system allows pins to be attached to steel
powder actuated
30
what's the main property of steel and concrete that allows steel to be used to reinforce concrete
similar coefficient or expansion
31
the compressive strength of concrete is about _________ times it's tensile strength
10 times
32
what's the size of 10M bar?
10mm in diameter
33
What name describes a grade 60 bar?
hard bar or hard rebar
34
What type of construction uses welded wire mesh for reinforcing concrete?
slab on grade
35
welded wire mesh is available in 6100mm long or rolls 61000 long. How wide is it?
7' or 2288mm
36
in the description 254 x 254 x P13/P13 , what does P13 mean ?
the cross sectional area of the end of the wires will be 13mm
37
What does yield mean, as applied to reinforcing steel?
referring to the tensile strength or it's bending point
38
list two types of waterstop
plain/dumbell and serrated
39
What pressures are waterstop designed to resist?
hydrostatic pressure
40
in what types of construction are waterstop used?
water tanks, sewage treatments, hydrolic structures
41
list three properties that all waterstops must have
waterproof, flexible, should be continuous around what you want to seal
42
what's the widest waterstop that can be used for a 300mm wall
300mm
43
what's the narrowest waterstop that can be used with concrete that has a max aggregate size of 30mm
6x30=180mm
44
what's the most common type of doorjamb used in a concrete wall?
metal
45
wooden door Jamba are usually cast in place with __________ attached.
a reverse key attached
46
what's added if door Jambs are not snug to both sides of the form
wood filler strips
47
how's a metal door frame secured in an existing masonry opening?
hollow or solid fasteners
48
What keeps a door frame from moving before bricks or blocks are placed around it?
it's braced
49
what's to be done to keep concrete from leaking through the metal frame
use rubber stops