Steel building

Your steel building from homework #1 has progressed in design and your project manager has asked you to work out a few things that the rest of the structural design team can use to help them with their building analysis. Note: use the attached building code excerpts to help you find the answers:
1. The architect has requested that there be an area on the roof designed to support a rooftop garden (aka green/vegetative roof) where they plan to host large parties and events such as weddings. What is the uniform live load for this area in psf (unfractured)? (3 pts)
2. There is an underground parking garage located below the building, and another engineer on your team needs you to tell them the dead load to put into their analysis model. The floor system consists of a 6″ reinforced concrete slab. There is mechanical ductwork being supported by the floor that weighs 2psf. Assume the concrete beams, girders, and other structural elements weigh 10psf. What is the dead load of the floor system (unfractured)? (3 pts)
3. Only passenger vehicles will be permitted to use the parking garage (same one as previous problem, with same dead load). What is the worst-case factored total floor load assuming LRFD load combinations are being used? (3 pts)
4. In a wild turn of events the building owner has proposed the building be relocated to Boston instead, where the snow load is 40 psf (this never happens, but just for the sake of the homework). The typical roof is an ordinary flat roof where no assembly is allowed. How much additional load will the typical roof need to be designed for considering the potential change of location? Provide LRFD factored load in psf. (3 pts)
5. At the 3rd level there is an open courtyard with a pool. The pool is 4 feet deep. For analysis purposes the water is assumed to be dead load. There is a 12″ reinforced concrete slab that supports the pool. Weight of the plumbing and mechanical systems that service the pool is 20 psf. The other structural elements in the area weigh 10 psf. What is the dead load of the pool area in psf (unfactored)? (2 pts)
6. The occupancy on floor 2 of our building is “office”. See below for a typical bay of framing. It does not support a lobby or corridor. Assume the beams are evenly spaced. What is the factored live load maximum deflection of beam “A” assuming beam “A” is a W16x31 with an “E” of 29000 ksi and an “I” of 375in^4? (Hint: Be careful with units! Think practically. If you’re answer isn’t within 0.5″-3″ you’ve done something wrong) (3 pts)

 

 

 

 

SAMPLE SOLUTION

In the sorting room, Finch acquires the regard of long-lasting leader of the sorting room, Mr. Twimble, who is moving to the delivery office and must pick his successor. He reveals to Finch the key to life span at the organization (“The Company Way”).

Twimble declared Finch as his decision to head the sorting room, anyway the book cautions not to remain in the sorting room excessively long. Finch prescribes Frump for the advancement rather than himself, to benefit the organization. Twimble is hesitant to advance Frump due to his lethargy, yet Frump vows to be a decent representative (“The Company Way (Reprise)”). Twimble and Bratt are both intrigued by Finch’s magnanimous choice, and Bratt extends to him an employment opportunity as a lesser official in the Plans and Systems division, headed by Mr. Gatch, sadly.

An incredibly appealing yet air-headed lady named Hedy LaRue, Mr. Biggley’s mystery special lady, is procured as a secretary. Her passageway draws in the consideration of the considerable number of men in the workplace, provoking Bratt to clarify the workplace approach on being a tease (“A Secretary isn’t a Toy”). Finch gains from Mr. Biggley’s secretary, Miss Jones, that Biggley is a glad alumni of Old Ivy school. In the lift by the day’s end, Rosemary’s kindred secretary Smitty encourages her and Finch set up a date (“Been A Long Day”). After they leave, Frump runs into Biggley and Hedy and understands the idea of their relationship. He coerces Biggley into giving him an advancement, by taking steps to tell his mom (“Been A Long Day (Reprise)”).

Finch shows up sooner than expected Saturday morning and sets up the workplace so it would appear that he has been working throughout the night, realizing that Biggley is coming in to the workplace soon. Finch persuades Biggley that he is additionally a pleased former student of Old Ivy and they sing the Old Ivy battle tune (“Grand Old Ivy”). Biggley requests that Finch be given his own office and secretary, and Bratt relegates Hedy to him. With the book’s assistance, Finch understands that Biggley must be Hedy’s supporter and sends her on a task to Gatch, very much aware that Gatch will make a go at her. Gatch succumbs to the snare and is sent to Venezuela, and Finch is elevated to his situation as head of Plans and Systems.

At a gathering for the new Advertising Department head, Benjamin Burton Daniel Ovington, Rosemary would like to intrigue Finch with her new dress, a Paris unique. Be that as it may, the various ladies show up at the gathering wearing a similar dress (“Paris Original”). Hedy, who has had an excessive amount to drink, goes up to Biggley’s office to shower.

Slob plans for Biggley to find Finch kissing Hedy in his office, however after LaRue extorts Finch into kissing her, he understands he’s quite love with Rosemary and proposes to her (“Rosemary”). As Rosemary is going to acknowledge, Hedy leaves the washroom in a towel which enrages Rosemary. She leaves, however comes back to reveal to Finch that Bud and Biggley are simply outside. Slob and Biggley stroll into the workplace similarly as Finch grasps Rosemary. Ovington is compelled to leave after Finch prompts him to uncover to Biggley that he is an alum from Northern State, Old Ivy’s harsh adversary. Biggley names Finch Vice-President in Charge of Advertising. Biggley leaves as Finch and Rosemary proclaim their affection for one another, and Bud Frump pledges retribution to stop Finch’s transient ascent (“Act I Finale”).
After two days, Rosemary feels disregarded by Finch and chooses to stop. Smitty and her kindred secretaries persuade her to remain in light of the fact that she’s experiencing their fantasy about wedding an official (“Cinderella, Darling”).

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