Reference no: EM132309817

Engineering Calculation Record

Scope for detailed design (Stage 2) and suggested break down of design tasks per person

In the list below, each item includes drafting of the items designed.

1. Analyse (consider permanent, imposed and wind loads) and design the steelwork members and connections to the roof and walls of the plant room (includes any internal steel columns down to Level 12 – Plant Room slab as well as support to the steel sheeting around the outside perimeter of the plant room immediately above the plant room slab).

2. Analyse and design the suspended reinforced concrete slab (and beams if used) for Level 04 including the reinforced concrete stairs adjacent to Grid 4. Superimposed dead loads and live loads should be determined from the relevant codes of practice, and should be consistent within the group. Consideration should be given to deflection sensitive façade elements which will be supported by the Level 04 slab system.

3. (a) Analyse and design the lateral load resisting system (shear walls). Consider gravity loads and earthquake loads and include allowance for torsion. Determine the loads transferred to the footings for the shear walls (design of these footings is not required). To assess the total building weight for earthquake loading, assume a dead load of 8kPa for concrete floors (note that this does not include superimposed dead
load) and a dead load of 0.35kPa for the roof.

(b) Design a reinforced concrete masonry retaining wall (including the footing to the retaining wall) to the perimeter of the basement.

4. (a) Prepare a general arrangement plan for the footings (plan showing layout of the footings for each column and each wall / core). Design the column and footing (design as a piled footing including structural design for the pile(s) and pile cap) at the intersection of Grid B and Grid 2. The design must consider the complete column run from footing to roof.

(b) Design and detail the slab on ground at Level B1 – Basement. Note that further geotechnical works have been undertaken, which have determined that the ground water table is at RL -3.2m, meaning that consideration of hydrostatic pressures is not required.(c) The architect has asked you to investigate the feasibility of replacing the glass façade between Grids B and C on Level 04 with a single storey unreinforced masonry infill wall.

Design the wall, including supports, assuming that the wall is of cavity masonry construction. The wall is proposed to be a 110 mm thick clay brick veneer skin, and an unreinforced blockwork internal skin. The architect has requested based
on the spans that you confirm the blockwork size required to the internal skin (i.e. 90 mm, 140 mm or 190 mm thick as appropriate).

For groups of 5 members, in addition to the tasks described above, you are required to:

5. The building owner is concerned the geotechnical analysis noted in Item 4(b) above is inaccurate. To determine their risk exposure, they’ve requested an alternative slab design be undertaken incorporating the hydrostatic pressure based on Groundwater Table being at the level currently noted in the geotechnical report. You are to analyse and design the reinforced concrete slab (and beams if used) for Level B1 (stairs not included).

Reading :

Pile Design and Construction Practice By Joseph E. Bowles.

Pile Foundation Analysis and Design By H.G.Poulos and E.H.Davis