UNIT 3: STRUCTURE pptx

Vocabulary: Ss work individually • The post-and-lintel structure consists of three upright posts and two horizontal lintels.. • The posts support the lintels which carry the roof.. • Th

LESSON PLAN 03

UNIT 3: STRUCTURE

 Class: 07 KQ-KC Time: 4 periods

 Main language focus: Reading comprehension

 Integrated language skills: Writing

I Objectives: Students will demonstrate successful reading for comprehension of describing

structure

II Prior Knowledge

Most students have knowledge on Basic English

III Teaching Aids:

Reading text, tapes, projector, laptop

IV Teaching Points:

A Structural systems:

1 Vocabulary: (Ss work individually)

• The post-and-lintel structure consists of three upright posts and two horizontal lintels

• The posts support the lintels which carry the roof

• The posts carry the lintels which support the roof

• The lintels span a distance of 1 meter

• Materials used for post-and-lintel structures include stone and timber

2 Read and rewrite sentences :(Ss work in pairs)

The post-and-lintel structure, in the diagram above, is composed of straight members The vertical and horizontal members which are used to make the structure are called posts and lintels respectively The posts are spaced at 1 meter centers They are made up of blocks Both the posts and the lintels are made of stone

1 The post-and-lintel structure is composed of straight members

The post-and-lintel structure …… straight members

2 The vertical members which are used to make the structure are called posts

Posts are ………… members in the structure

3 The horizontal members which are used to make the structure are called lintels

Lintels are ………… member in the structure

4 The posts are spaced at 1 meter centers

The posts span ……… of 1 meter

5 Both the posts and the lintels are made of stone

Stone is main ………… for posts and lintels

2 Language focus:

 made up of

 made of Example: What is the roof structure made up of?

What are the corrugated sheets made of?

Exercise 1: Complete this passage: (Ss work in pairs)

The factory from four elements: the ., the ., the … , and the The roof a waterproof covering, which is made of ., and a ., which is made of timber joists and .slabs The walls are constructed from two ., the wall structure, which consists of ., and the , which is made of sheets The consists of a wearing surface, which is made of and a floor structure, which is made of The foundations consists of

B Joining and diagrams of joints:

1 Vocabulary:

Language focus:

 to be welded to

 to be joined to

 to be transmitted through

 to be filled with

Joint X:

Plate A is welded to plate B

Plate A is joined to plate B by welds

Plate A and B are welded together

The force on the plate A is transmitted through the welds to plate B

Joint X is not filled with packing because the contact faces of the joint are machined flat Exercise 1: Complete these sentences about Joint Y (Ss work individually)

a) Plate C plate D by

b) Plate C and D

c) The force on the plate C

d) Plate C plate D

e) Joint Y is filled with packing

III.Reading :

Exercise 1: Look at the text and answer the questions (Ss work in groups)

The single-storey structure consists of three frames These frames are made up of steel stanchions and beams The frames are placed between end walls and spaced at 3 metre centres The stanchions carry the beams These beams support the roof The roof beams cantilever a short distance beyond the

stanchions This means that they extend over the profiled sheet steel cladding The cladding can then

be placed outside the line of the stanchions

The beams are bolted to steel stanchion caps The stanchion caps are welded to the top of each stanchion The load on each beam is transmitted through these plates to the stanchions

The upper face of the steel base plates and the ends of the stanchions are machined flat The bottom of each stanchion is welded to a base plate Each base plate is fixed to a concrete column base

by two holding-down bolts

Steel angles are fixed across the ends of the beams and built into the brick walls These angles tie the frames together and also provide a place to fix the top of the cladding

Answer the questions:

1 How are the angles fixed to the roof beams?

2 How are the loads on the roof beam transmitted to the column bases?

3 What is the joint between a base plate a column base filled with?

4 Why do the roof beams cantilever a short distance?

MORE READING

Skeleton construction: (Homework)

1 Vocabulary:

2 Reading: