9. Steel Construction

Question 1

Added to steel

Strength

Answer 1

Molybdenum

Question 2

Strength and toughness

Answer 2

Vanadium

Question 3

Resistance of steel to abrasion

Answer 3

Manganese

Question 4

Deductibility of this steel can be illustrated by comparing the stress exerted on the steel against the resulting deformation known as the ___

Answer 4

Strain

When the YEILD POINT STREE is reached, the steel undergoes a pronounced deformation. finally the still breaks at the ULTIMATE STRESS

Question 5

$$$

The speed of failure depends on several factors including:

Answer 5

Type of steel

Mass of the steel members

Load supported by steel $$$

Type of connections used

Intensity of exposing fire

Question 6

The most commonly used Spray Applied Fire Resistive materials SFRM are __ or ___

Answer 6

mineral fiber or expanded aggregate coating

Question 7

Gypsum includes approx ___% of water

Answer 7

20%

Calcination

Question 8

$$$

A commonly used method of protecting a steel floor or roof assembly is the ___ ___

Answer 8

Membrane ceiling

Question 9

Beam and girder steel frames can be classified as:

Answer 9

Rigid, simple, or semi rigid

Question 10

They are frequently used in three-dimensional space frames, in which case they are known as ___ trusses

Answer 10

Delta

Question 11

Two commonly encountered applications of the basic steel trusses are

Answer 11

Joist girder- Are heavy steel truss used to take the place of steel beams as part of the primary structural frame

Open web joist- Are frequently used in closely spaced configurations for the support of floors or roof decks

Question 12

$$$

___ ___ frame: Steel rigid frame buildings with inclined roofs are widely used for the construction of one-story industrial buildings farm buildings and a variety of other applications

Answer 12

Gabled rigid frames

Must be braced diagonally for structural rigidity

Question 13

The top of the rigid frame is known as the ___ and the points where the incline members intersect the vertical members are known as the ___

Answer 13

Crown

Knees

Question 14

Wire for use in bridge cables can have strengths as high as ___psi

Answer 14

300,000

Question 15

A property of a given column known as its ___, is used in combination with the conditions of the column end to determine the load that can be safely supported without buckling

Answer 15

Slenderness ratio

Columns used for structural support in building should not have a slenderness racial greater than 120 the lower the better

Question 16

In gabled rigid frame structures, the ___ joint between the roof and the wall will be the strongest part of the frame and the last part to fail.

Answer 16

Knee joint

Question 17

The primary two metals alloyed I steel are

Answer 17

Iron and carbon

Question 18

The amount of expansion for slender members, such as beams and columns, can be determined through a property known as the

Answer 18

Linear coefficient of thermal expansion

Question 19

Gypsum board is available as

Answer 19

Regular and type X

Question 20

The connections between the beams and the columns in ___ frame system are designed to resist the bending forces resulting from the supported loads and lateral forces

Answer 20

Rigid

Question 21

The joints in a ___ frame are designed primarily to support a vertical force

Answer 21

Simple frame

Question 22

The connections in a ___ frame are not completely rigid but posses enough rigidity to provide some diagonal support to the structure

Answer 22

Semi Rigid frame