Question 2
An 8-storey reinforced-concrete office building is to be
constructed in Meckering, WA. All floors have the same layout based
on the typical floor plan shown in the drawing below. This includes
grid dimensions and typical beam, column and wall positions. The
width of both primary and secondary beams is 400 mm. The specified
office floor live load is 4 kPa, whereas the suspended ceilings
represent a 0.15 kPa permanent loading. Concrete has a
characteristic strength of 40 MPa in all members. N12 D500
reinforcement bars are to be used in all slabs and N28 D500
reinforcement bars in all beams and columns.
- F C 32mpa Question 2 An 8 Storey Reinforced Concrete Office Building Is To Be Constructed In Meckering Wa All Floors 1 (168.9 KiB) Viewed 35 times
Please refer to slab panel labelled A in Fig 2 for all
questions below.
(2.5 marks) a) Calculate the minimum cover to
satisfy durability and fire requirements according to Australian
Standards. Note: the design Fire Resistance Levels (to satisfy the
BCA) are 120/90/60.
(2.5 marks) b) Determine the combination
factors for short-term and long-term loading effects, in accordance
with AS 1170.
Note: In the following questions, assume that the suspended
ceilings represent a 0.15kPa permanent loading. Consider the
minimum cover is 20 mm, and Ψs = 0.7 and Ψl =
0.4 whenever needed.
(2.5 marks) c) Work out the minimum thickness
for slab A using the deemed-to-comply approach in
AS 3600 (do not forget to include its self-weight). Note: there is
no compressive reinforcement.
Note: In the following questions, assume that the slab
thickness is 160 mm.
(2.5 marks) d) Calculate the minimum
longitudinal reinforcement required for slab A for
moderate cracking and fully restrained situation.
(2.5 marks) e) Design the amount of
longitudinal reinforcement in both directions for the ultimate
limit state of flexure.
(2.5 marks) f) Check whether the slab requires
shear reinforcement.
(1.25 marks) g) Finalise the layout of
reinforcements using the deemed-to-comply approach in AS 3600.
Question 2 An 8-storey reinforced-concrete office building is to be constructed in Meckering, WA. All floors have the same layout based on the typical floor plan shown in the drawing below. This includes grid dimensions and typical beam, column and wall positions. The width of both primary and secondary beams is 400 mm. The specified office floor live load is 4 kPa, whereas the suspended ceilings represent a 0.15 kPa permanent loading. Concrete has a characteristic strength of 40 MPa in all members. N12 D500 reinforcement bars are to be used in all slabs and N28 D500 reinforcement bars in all beams and columns. A B D (E) (F) 4.3 8.6 8.6 4.3 8.6 А 8.6 8.6 4.3 Fig. 2: Structural floor plan (dimensions in m). Please refer to slab panel labelled A in Fig 2 for all questions below. (2.5 marks) a) Calculate the minimum cover to satisfy durability and fire requirements according to Australian Standards. Note: the design Fire Resistance Levels (to satisfy the BCA) are 120/90/60. (2.5 marks) b) Determine the combination factors for short-term and long-term loading effects, in accordance with AS 1170. Note: In the following questions, assume that the suspended ceilings represent a 0.15kPa permanent loading. Consider the minimum cover is 20 mm, and 45= 0.7 and 4₁ = 0.4 whenever needed. (2.5 marks) c) Work out the minimum thickness for slab A using the deemed-to-comply approach in AS 3600 (do not forget to include its self-weight). Note: there is no compressive reinforcement. Note: In the following questions, assume that the slab thickness is 160 mm. (2.5 marks) d) Calculate the minimum longitudinal reinforcement required for slab A for moderate cracking and fully restrained situation. (2.5 marks) e) Design the amount of longitudinal reinforcement in both directions for the ultimate limit state of flexure. (2.5 marks) f) Check whether the slab requires shear reinforcement. (1.25 marks) g) Finalise the layout of reinforcements using the deemed-to-comply approach in AS 3600. (6) in (m (2) 8.6 4.3