Building construction 2 concepts

Question 1

external and internal forces are called

Answer 1

external-load

internal-stress and strain

Question 2

stress define

Answer 2

force per unit area that produces deformation

Question 3

strain define

Answer 3

% of elongation that occures when a material is stressed

Question 4

four types of forces

Answer 4

compression
tension
torsion
shear

Question 5

compressive vs tensile vs torsional vs shear

Answer 5

squeeze
stretch
twisting
opposing forces pull opposite directions

Question 6

fire resistance is closely related to

Answer 6

mass

Question 7

shear walls resist

Answer 7

lateral loads

Question 8

classifications of load

Answer 8

axial

eccentric

Question 9

axial load is

Answer 9

force passes through center of section. perpendicular to the plane. applied evenly

Question 10

eccentric load

Answer 10

perpendicular but not pass through center. bending support members

Question 11

IF design load is 1/10 of tested strength, the safety factor is? what if 1/2?

Answer 11

10/2

Question 12

a bent beam has what two forces

Answer 12

compression top and tension bottom

Question 13

capacity increases by the

Answer 13

square of its depth and in direct proportion to width

Question 14

beams simple vs continuous

Answer 14

simple 2 points

cont 3 or more points

Question 15

fixed beam

Answer 15

supported and rigidly fixed two points

Question 16

bracket

Answer 16

diagonal support

Question 17

joist

Answer 17

beam of wood or steel

Question 18

girder

Answer 18

beam that support other beams

Question 19

lintel

Answer 19

spans opening masonry wall

Question 20

grillage

Answer 20

series closely spaced beams to carry heavy load

Question 21

cantilever

Answer 21

rigid support one end

Question 22

suspended beam

Answer 22

simple with one or both ends suspended on a tension member

Question 23

transfer beam

Answer 23

moves load laterally

Question 24

distribution of loads on a beam

Answer 24

8 units
4 concentrated center
2 on cantilever
1 end of unsupported end cantilever

Question 25

trusses only support

Answer 25

axial loads

Question 26

the economy fo a truss is it

Answer 26

separates compressive and tensile stresses

Question 27

components of trusses

Answer 27

chords-top and bottom members

web-struts, ties, and panel points

Question 28

struts, ties, and panel joints (parts of truss)

Answer 28

struts-compressive connecting members
ties-tensile connecting members
panel joints-connections

Question 29

columns lose strength by

Answer 29

the square of the change of length. (12 foot carry 1/4 of 6 foot)

Question 30

3 types steel columns

Answer 30

H
box
cylindrical

Question 31

types of column failures

Answer 31

short, squat-crush

long, slender-buckling

Question 32

whats the column law

Answer 32

eulers law of columns

Question 33

temporary bracing in incomplete structures

Answer 33

guy bracing

Question 34

three types non load bearing walls

Answer 34

veneer
panel (curtain)
partition

Question 35

what is a cross wall

Answer 35

right angle to another wall

Question 36

two types glass walls

Answer 36

panel-one story

curtain-more than one story

Question 37

party wall

Answer 37

load bearing wall common to two structures

Question 38

failed connections masnory walls

Answer 38

shift outward