Instructions: Answer all questions correctly
- State the relationship between Riser and thread of stairs according to blondel. Also state the formulae used in determining length of spiral stair case, if the thickness of Riser is 150mm, determine the thickness of the thread ?
- If the total daily commercial vehicle flow is 9000, determine the percentage of vehicles in heaviest traffic lane
Use the structure below to answer the remaining questions

3. Determine the fixed end moment at FEMAB?
4. Calculate the moment at B and C respectively
5. State the 3 conditions that determine that a frame is Non- sway
Good luck! Please endeavor to tell us your name and name of institution