A barge is 15 ft wide and 40 ft long and floats with a draft (i.e., depth below water) of 4ft.It is piled so high with gravel that its center of gravity is 3ft above the waterline. Is itstable?

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Answered: A barge is 15 ft wide and 40 ft long…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Problem 4: Buoyancy I Pontoon bridges use buoyant forces to support loads. This problem will ask you to consider a 10 ft section of the pontoon bridge sketched below. The bridge deck is 4 ft wide, and each 10 ft section has five 55 gallon drums on each side. Each drum has a diameter of 22 in, so the cross-sectional area of each drum is 2.64 ft², and each drum is 2.79 ft tall. Assume the bridge deck and the bracing system for the drums weigh 2300 lb per 10 ft section but occupy negligible volume. The bridge floats in water with y = 62.3 lb/ft³. Part A What is the cross-sectional area of all ten drums? [ft²] Part B What is the volume of all ten drums? [ft³] Part C When the bridge is unloaded, what length of the drums will be underwater? [ft] PLAN VIEW ∞∞∞∞0 ooooo SECTION VIEW Part D How much weight can each 10 ft section carry without sinking? [lb]
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Believe it or not, canoes have been made out of concrete (and they actually float). But even though concrete has a lower density than aluminum, a concrete canoe weighs a lot more than an aluminum one of the same size. Why is that? (The two canoes are the same size if the length and width are the same.)
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For his construction project Northern Mindanao, Engr. Robredo commissioned a barge to transport a 20 mm diameter by 6 m long steel reinforcing bars he purchased in Cebu City. When unloaded in the Cagayan port (where the water is observed to have a sp.gr. of 1.03 )the barge has a draft of 3.8 m and the portion of the barge at the water line measures 300 m by 60 m. Loaded with the reinforcing bars in Cebu City bay (where the sea water is observed to have a sp.gr. of 1.05, the vessel chief mate recorded a draft of 7.2 m. If it costs P5 to transfer a bar of a given dimension, determine how much would it costs Engr. Robredo for the transfer in thousands of pesos. Use unit weight of steel to be 7.85 kN/cu.m. PhP 169 M PhP 170.97 M PhP 363.06 M PhP 131.35 M

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A barge is 15 ft wide and 40 ft long and floats with a draft (i.e., depth below water) of 4ft. It is piled so high with gravel that its center of gravity is 3ft above the waterline. Is it stable?