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aci 318 chapter 20
i've got another post going on鈥?
well, i'll post my experience here - but others out there - do add any insights above and beyond this:
i did a load test once on a small grandstand - made of load bearing cmu with double tees forming each riser. no one had a clue where the dt's came from and what load capacity they truly had.
i had a number of barrels set up in a specified spacing to load the grandstand to 125% of the required live loading for grandstands (100 psf i think it was). the loading was performed by adding water to the barrels - calculating the volume in each barrel, the resulting weight, and the barrel spacing to mimic 100 psf.
i took vertical elevation measurements of the dt's prior to loading, at 1/4 loading, 1/2, 3/4 and full loading. then removed the load, took measurements, and then took them again i think at 24 hours later. (i don't have aci with me right now but this is what i recall).
aci provided design criteria for the deflection and deflection-rebound.

2009-09-07, 09:43 AM	#1
huangyhg 超级版主注册日期: 04-03 帖子: 18592 精华: 36 现金: 249466 标准币资产: 1080358888 标准币	aci 318 chapter 20 aci 318 chapter 20 i've got another post going on鈥? well, i'll post my experience here - but others out there - do add any insights above and beyond this: i did a load test once on a small grandstand - made of load bearing cmu with double tees forming each riser. no one had a clue where the dt's came from and what load capacity they truly had. i had a number of barrels set up in a specified spacing to load the grandstand to 125% of the required live loading for grandstands (100 psf i think it was). the loading was performed by adding water to the barrels - calculating the volume in each barrel, the resulting weight, and the barrel spacing to mimic 100 psf. i took vertical elevation measurements of the dt's prior to loading, at 1/4 loading, 1/2, 3/4 and full loading. then removed the load, took measurements, and then took them again i think at 24 hours later. (i don't have aci with me right now but this is what i recall). aci provided design criteria for the deflection and deflection-rebound. __________________ 借用达朗贝尔的名言：前进吧，你会得到信心! [url="http://www.dimcax.com"]几何尺寸与公差标准[/url]