Question

1. In your own language outline the material quality controls for the construction of a complex infrastructure project.

                   

2.Determine the constructability of a two-story CMU wall of wind load 30 ibf/ft² with allowable stress 40 ibf/in2. The wall is 10 feet height of each floor and the section modulus is 160 in³/ft?

3. An office has a floor area of 2000 ft² and maximum occupants are 40. Cool air is supplied from ceiling diffusers. If the efficiency is 1, determine how much air ventilation requires as per ASHRAE

4. Determine the additional scope of work for a change order of concrete work of 210x150 size one story building of an ongoing mega project. Assume SOF is 14” and building height is 12’?

Answer 1

1. Material Quality control :

Controlling Conditions and Quality of Materials like raw materials, finished or semi finished products are very necessary in the construction of big infrastructure project.

i) Material procurement : The contractor should buy materials according to the contract, integration of engineering characteristics, their applications and according to the budget. The materials should be procured according to the basis of schedule of contract.

ii) Testing of materials: To judge the quality of materials, inspection of sample and to set the standards of quality testing of materials is very necessary.

iii) Storage of materials and their use: The main quality control is done by proper strogaing of materials and their proper use, like protect cement from wetting, protect steel from corrosion, keeping reinforcement separately according to their diameter, avoiding the overstorage, but for big infrastructure project there should be always chance of high storage of materials, that material should be properly controlled by treating right inspection and supervision .