For industrial buildings with long spans (18-24 meters) which is more economical? Metal construction or preststressed precast concrete structures. What are the main advantages and disadvantages of these systems. Advice needed from experienced people. Thank you in advance.
Hi, Would you please inform me about the form removal times of slabs? What must be the compressive strength of concrete (in terms of percentage of design strength) to begin form removal. Thank you in advance
What is the standard for concreting while pile driving works go on nearby. Recently I have seen this application. 12 meters of concrete piles were being installed while there were the fresh poured columns and curtain walls 20 meters away. How long should be the waiting period to begin pile...
I am looking for strength gain curves for cold weather concreting. In fact we are pouring concrete in cold weather conditions and protect it by heater fans and cover it by tent canvas nearly for 24 hours. After that we leave it open. The weather conditions range from +5C to -15C. In normal...
