### UNIVERSITI TUN HUSSEIN ONN MALAYSIA TEST 2 SEMESTER II

```CONFIDENTIAL
UNIVERSITI TUN HUSSEIN ONN MALAYSIA
TEST 2
SEMESTER II
SESSION 2013/2014
COURSE NAME
:
REINFORCED CONCRETE DESIGN I
COURSE CODE
:
BFC 32102
PROGRAMME
:
3 BFF
EXAMINATION DATE
:
MAY 2014
DURATION
:
1 HOUR 30 MINUTES
INSTRUCTION
:
CONFIDENTIAL
Q1
(a)
The durability of concrete involves the environmental condition. The
condition exposure includes chemical and physical attacks. In that particular,
list three from each exposure.
(6 marks)
(b)
What is the purpose of determine a minimum concrete cover in reinforced
concrete structures?
(4 marks)
(c)
In order to achieve the required design working life of the structure, list all the
durability requirement need to consider to make sure the structural element are
protected against the relevant environmental action.
(10 marks)
Q2
A simply supported beam of 5.6 m is to carry a design moment of 300kNm. The beam
is 250 x 500mm (bxh). Assume fck= 25N/mm2 and fyk = 500N/mm2. The beam is
inside building (XC 1), subjected to 1 hour fire resistance and design life of 50
years. Assume diameter of bar used are 16mm for compression (if required) and
20mm for tension. Diameter of the link is 8mm.
(a)
Calculate nominal cover for the beam
(6 marks)
(b)
Calculate the amount and number of reinforcement needed for the
beam
(12 marks)
(c)
Verify that area of steel determined in (b) is within the limit required
by the EC2
(4 marks)
(d)
Verify the deflection of the beam
(8 marks)
FORMULA




l
 K 11  1.5 f ck o  3.2 f ck  0  1
d

 



o
l
1
 K 11  1.5 f ck

d
   ' 12

0 
f ck
0 
As,req
 '
f ck
if
or
if
or
3/ 2
if <o
 ' 
if >0
 
bd
As ',req
bd
Cmin  max{ Cmin,b* ; Cmin,dur  Cdur,  Cdur,st  Cdur,add ;10mm}
Cnom  Cmin  Cdev
```