Explain briefly the arch types in your words.

QUESTION 1 (30%). Concrete is required for a reinforced concrete building. The 28-day target mean (cube) compressive strength should be 40 N/mm2. Use the BRE method to determine the concrete mix proportions for 0.05 m3 concrete (BRE tables and figures are attached below for each stage). (30%) The properties of materials and site conditions are as follows: - Cement strength class: 42.5 - Slump required: 50 mm - Coarse aggregate: crushed 20 mm (use 1:2 proportions for 10 mm and 20 mm combination); Fine aggregate: uncrushed (40% passes 600 micron sieve) - Minimum allowable cement content: 300 kg/m3; Maximum allowable cement content: 450 kg/m3 - Maximum allowable free w/c ratio: 0.55 - Relative density of aggregates (SSD): 2.65 - Free Moisture content for Coarse Aggregate: +1.0% - Free moisture content for Fine Aggregate: +1.0%

1.1 characterisitic compressive strength (MPa) and age (days): Proportion defective (%)

Determine the Terzaghi’s Bearing Capacity of a square footing 2.25x2.25m located at a depth of 1.24 m in a sandrock for which c = 0 and Ф = 36⁰. The unit weight of the sandrock above the water table is 17.17 kN/m³; the saturated unit weight is 19.37 kN/m³.

Terzaghi’s Bearing Capacity Factors—Nc=63.53 , Nq=47.16 ,   and Ny= 54.36

3.1.The water table is at the surface

3.2.The water table is at 1.10m from the surface

3.3.The water table is at 1.55m from the surface

3.4.The water table is at 3.10m from the surface

3.5.The water table is at 4.50m from the surface

METHOD AND IMPORTANCE OF DRAINAGE AND DEWATERING GIVING SOME PRACTICLES EXAMPLES

Class: Hydraulic Engineering

Hot and cold water Plumbing systems. The design criteria and methods?

Class: (Sanitary Engineering)

The sewer design criteria and design methods and sewer lining?

Most traditional water treatment plants units and design limitation

The water quality standards and their national and International versions. Limitation and critical values?

A relatively new apartment building in St. Kilda has been made with complex architectural balconies.
The balcony railings have been fabricated from an extruded 6000-series (Al-Mg-Si) aluminium alloy.
The balcony railings have been fixed to mild steel posts using stainless steel screws. The construction
team did not use rubber washers in any instance.
Briefly describe what you think may occur in such a situation under atmospheric conditions.
Also, what do you think may occur if galvanised steel screws were used instead of stainless steel?
Finally, what would you have done differently, if you were the chief engineer for the project?

Differentiate the functions of DOSH, NIOSH & SOCSO and If an accident happens at the construction site, which parties will be involved in the accident investigation and compensations to the workers?
please in detail

What is Lump sum cost in the estimation , Could you please provide an example for TRENCH SHORING LS cost has, trench depth 11 FT and Length of 7 FT, width 7.75 FT?

calculation steps of level of service for multi lane ways

Correlate the current issue of the environment, socio-economic and sustainability with sound engineering practise