Determine the external reactions at A and F for the roof truss loaded as shown (positive answers are to the right and up). The vertical loads represent the effect of the supported roofing materials, while the 420-N force represents a wind load. 420 N y 260 N A 60° Answers: Ax= i = Ay i Fy= tel B i 480 N 60⁰ 30° 410 N G 9.5 m 420 N 30° E 30° Z Z N N N 250 N F

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Question 6. [3 Points] For a new project located in Trenton, NJ, it has been determined that the path fr the hydraulically most remote point of the drainage area to the point of concentration takes the followi path: 1. 800 ft of paved surface at a 1.5% slope 2. 140 ft of poor grass surface at a 0.9% slope 3. 60 ft of dense grass at a 6.0% slope 4. 1,600 ft of stream flow at a 1% slope. Calculate the total time of concentration using the following nomographs. 1000 -900 -800 -700 -600 -500 PAVED 400 لين ليسا ياليليليليليا 300 -200 BARE SOIL 100 90 80 70 60 50 40 82222222 -30 20 ויזיויויוייויייווווז LENGTH OF DRAINAGE STRIP IN FEET 10 POOR GRASS 0.5 1.0 CHARACTER OF GROUND AVERAGE GRASS DENSE GRASS OR WOODLAND PIVOT LINE PERCENT SLOPE OF GROUND דייוידי משר 2.0 235 3.0 000 5.0 10 120 35 30 25 20 S T T ° 6 0 INLET CONCENTRATION TIME IN MINUTES

plete the following levelling booking and late the reduced levels of all stations by body the rise and fall and height of collimation methods. Apply all arithmetic checks possible. (Engineering Council) BS 1.76 1.05 1:53 0.94 0.51 -0.61 0.32 1.01 FS 1:34 1.09 0.33 d pue # RL 100.00 Station ABCDEFUI G Jaur and se