need all these answers 353-Structures Name:abe parapl tet Project Load Tracing D

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need all these answers

353-Structures Name:abe parapl tet Project Load Tracing Due: 2 October 2017 beginning of class Basic requirements of the structural members of the load tracing project. Identify the unit uniform load on the major of the structure. A concentrated load shall be identified for the project A concentrated load shall be identified for the Werermine if the wall footings minimum width and the size of the column footings must be have a professional appearance: coversheet, table of contents (square). Work neat calculations, good organization, good overall appearance Answers shall be provided on the summary table as (a cross-section of the structure identifying how the structura Calculations with freebodies shall be well as on a neatly drawn load path l load travels to the footings). done on engineering graph paper or plain white paper. Complete projects shall be submitted in a manila envelope. Snow (horz, proj), Finish floor Sub floor Joists 50 psf 3 psf 4.2 psf 3.5 psf 3 psf 12 psf Note: Concrete walls-8 inches thick Concrete piers under columns-12 in square Footing base height -8 inches wide Insulation Wall Occupancy (LL)50 psf Concrete Roofing 145 psf 10 psf 2 psf 3 psf 4 psf Sheeting Rafters Ceiling Rafters placed 19 in OC 12 Beam 12 14 ft 4x4 Column 20 ft OC 10 ft 8 ft Joists placed 12 in OC 10 ft 4x4 Column 15 ft OC Beam 3 ft 5 ft 9 ft 4x4 Column 10 ft OC 6 ft 8 ft 6 ft 2 ft 16 ft 3 ft 10 ft 3 ft

Explanation / Answer

Solution -

1) Rafter left side load -

     a) Left side rafter tributary area load calculation -

Rafter left side length till exterior column = Sqrt (102 + 62) = 11.6619 ft

Rafter left side length projection from column -

Vertical height = (7/12) x 3 = 1.75

so Rafter left side length projection from column = Sqrt (1.752 + 32) = 3.47 ft

So total length of left side rafter = 11.6619 + 3.47 =15.14 ft

Tributary area of load on rafter = 15.14 ft x (19/12 ft) = 23.96 ft2

Horizontal area projection of rater = 13 x (19/12) =20.58 ft2

b) Load on rafter left side = 23.96 x ( insulation + roofing + sheeting + rafter + ceiling)  + 20.58 x snow load =1556.20 lbs

2) Rafter right side load -

a) Right side rafter tributary area load calculation -

Rafter right side length till exterior column = Sqrt (((3/12) x 31 )2 + 312) = 31.95 ft

Rafter right side length projection from column -

Vertical height = (3/12) x 3 = 0.75

so Rafter right side length projection from column = Sqrt (0.752 + 32) = 3.09 ft

So total length of right side rafter = 31.95 + 3.09 =35.04 ft

Tributary area of load on rafter = 35.04 ft x (19/12 ft) = 55.48 ft2

Horizontal area projection of rater = 34 x (19/12) =53.83 ft2

b) Load on rafter right side = 55.48 x ( insulation + roofing + sheeting + rafter + ceiling)  + 53.83 x snow load = 3912.06 lbs

3) Roof beam -

roof beam = (Load of left side rafter for 10 ft length horizontal length) / 2 + (Load of right side rafter for 15 ft length horizontal length) / 2

Load of left side rafter for 10 ft length horizontal length = (11.6619 x (19/12) x 23.96) + (10 x (19/12)) x 50 = 1234.08 lbs

Load of right side rafter for 15 ft length horizontal length = (15.46 x (19/12) x 23.96) + (15 x (19/12)) x 50 = 1726.02 lbs

roof beam = (Load of left side rafter for 10 ft length horizontal length) / 2 + (Load of right side rafter for 15 ft length horizontal length) / 2 = 1480.05 lbs

Load on roof beam/ft = (1480 x 12) /19 = 934.77 lbs /ft

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