Flashcards in Load Transfer Deck (46):

1

## Define strength as a structural principal

### Strength of all structural elements, and of structure as a whole, must always be greater the the stresses induced by the loads and forces

2

## Define Stability as a structural principal

### The structure must have a reasonable factor of safety against collapse and over turning due to application of loads.

3

## Define Robustness as a structural principal

### Structure must be able to withstand the effects of accidental misuse or malicious damage without disproportionate collapse.

4

## Define Equilibrium as a structural principal

### All loads, forces and the moments that they cause on the structure bust be balanced by the reactions so that the structure experiences no movement.

5

## What is defined by the structure of a building

### The elements of construction which accept the loads and forces imposed upon the building in a way that it remains strong, stable and robust. Loads, forces and reactions are all in equilibrium and deformations are kept within acceptable limits.

6

## What are the components of a Building Structure (4)

### Roof, Floors, Walls, Foundations

7

## What is the function of the Roof

### To bear the roof dead load, and transfer any imposed loads to the walls.

8

## What is the function of the Floor

### To bear dead load of the wall structure, and transfer any imposed loads to walls or ground.

9

## What is the function of the Walls

### To bear the dead load of the walls, accept loads from the floor and roof and transfer them to the foundations.

10

## What is the function of the Foundations

### T accept loads from from walls and transfer them to the ground.

11

## Why must load acceptance and transfer be accomplished

### So that the stresses inside and deformation of the materials are kept within acceptable limits.

12

## What does 1n equate to

### 1 Kilogram of Mass x Acceleration of 1m/sec2

13

## What does 1kn equate to

### 1000n = 1000kgm/sec2

14

## What is mass defined as

### The total amount of substance a physical object comprises of

15

## What is weight defined as

### mass x acceleration due to gravity (approx 10m/sec2)

16

## Define Deadload

### The self weight of the structure and all permanent fixtures

17

## The self weight of the structure and all permanent fixtures refers too

### Dead Load

18

## Define Liveload

### A loading allowance for building use

19

## A loading allowance for building use refers too

### Liveload

20

## Define Wind Load

### A loading allowance due to wind pressure

21

## A loading allowance due to wind pressure refers to

### Wind Load

22

## Define Uniformly-Distributed Loads (UDL)

### Spread loads eg floor, roof

23

## Spread loads eg floor, roof refer to

### Define Uniformly-Distributed Loads (UDL)

24

## Define line loads

### loads along a line eg wall and strip footing loads

25

## loads along a line eg wall and strip footing loads refer to

### Line loads

26

## Define Point Loads

### forces at a point eg column loads

27

## forces at a point eg column loads refer to

### Point Loads

28

## What is the definition of Equilibrium

### All the forces on the structure and the moments that they cause must be balanced by the reactions so that the structure mains stable and experiences no movement.

29

## What is a moment

### It is the twisting effect of a force about a centre of rotation. Similar to effect of a spanner to tighten a nut.

30

## What is the equation for calculating moments

### moment (kNm) = force (kN) x lever arm (m)

31

## What is the equation for calculating point loads

### moment (kNm) = value of point load (kN) x Lever arm (m)

32

## What is the equation for calculating line loads

### moment (kNm) = line load (kN/m) x length considered (m) x lever arm (m)

33

## What are the two types of load

### concentrated / Point load, distributed load

34

## what are the four main principles of structures

### strength, stability, robustness, equilibrium

35

## what are the six structural components

### roof, floors, walls, foundations, structural frames, connections

36

## what are the two types of load described as

### live load and dead load

37

## define live load

### the weight of people and their movement.

38

## define dead load

### self weight of structure and imposed loads

39

## what are the 4 types of distributed load

### uniformly distributed load, tapered patch load, patch load, tapered distributed load

40

## what are the 3 types of forces acting on a structure

### reactions, shear force, bending moment

41

## What are the different components of reactions on a beam with a point load

### L = length of beam, P = point load, VL = support left, VR = support right, A = left of P, B = right of P

42

## How do you calculate the reaction of VL on a beam with a point load

### P (load) x B (right of P) divide by length

43

## How do you calculate the reaction of VR on a beam with a point load

### P (load) x A (left of P) divide by length

44

## how do we calculate the sum of reactions of beam with a point load

### 0.5 x P (load)

45

## how do we calculate the bending moment at P (load) on beam with a point load

### load (P) x left of P (A) x right of P (B) divide by length (L)

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