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Thanks chicopee and bridgebuster. @chicopee: Can you elaborate on dust suppression equipment ? Do you mean more like showing water hose ? So i have essentially created 1. preparatory phase showing the actual site condition with construction fence around and removing glasses, doors, windows...

Thanks, i just posted the same question in forum488: Demolition & renovation engineering, please post your reply there if you have something to share on this question. Thanks again.

Hi, I working on demolition of a school building in NYC area. We are structural consultants working along with architect. I am not sure on how the submission of drawing works for this kinda job. Btw we submit our drawings to NYC parks and recreation department. Our job scope is essentially to...

Hi, I working on demolition of a school building in NYC area. We are structural consultants working along with architect. I am not sure on how the submission of drawing works for this kinda job. Btw we submit our drawings to NYC parks and recreation department. Our job scope is essentially to...

Thanks Slideruleera, I believe that 15t is allowable uplift capacity of pile and it may have reserve capacity for ultimate. The crane will be used for about an year. Based on RISA model maximum uplift in pile is 26k. Am concerned that by multiplying the 26k with 1.5 overturning safety it...

Hey just a quick question. Should the pile uplift force be multiplied by a safety factor of 1.5 and checked against the allowable capacity of the pile or checked against the ultimate capacity of the pile ? Thanks

Thanks slideerarule, i did take your comments in to account. Thanks everyone for sharing your valuable knowledge. Really appreciate all of you !!. I have reviewed and sent a letter to client. I need to wait for them to address all comments and get back to me. Thanks, SM89

sticksandtriangles, i checked for punching shear,it looks fine. One reason is the depth of footing and other reason is concrete compressive strngth is 6000 psi. So my check against unity is close to 0.6, but i am not sure if the code requires to provide minimum reinforcment regardless. Does...

Agent666, i live in US. The crane supplier has provided me overturning moment, vertical and horizontal loads for in-service and out-of-service conditions. But there is no break down on the factors or coefficients used to arrive at those values (Although they mentioned in a footnote that wind...

Dik, thanks for sharing that piece of information. I did go through the crane spec in detail and found out that the spec provides base reactions for In-Service and Out-Of-Service conditions and also specifies that wind loads for out of service condition has been taken from FEM 1004. Yet to read...

Chicopee, am not sure about the free standing height. Crane used is Terex CTT 561A-20, i do not see the specs calling out max unbraced free standing height but i did google it and found out through biggie cranes and rigging company's website mentioned as 344ft (Max. freestanding hook height)...

No its free standing for height of 260ft.

I am new to doing peer review on tower cranes. The tower crane stands 260ft tall with a massive foundation. I see the designer has used crane dead load & weight of crane footing in arriving at reactions and overturning moment. In my opinion wind loads should be included to obtain base reactions...

Hi, I want to design an aluminum base plate for aluminum column of size 4"x4". Can i use the anchor rods specified in the AISC manual for steel, will that be sufficient?. The base plate is supposed to be on a concrete footing, so what measures should i take in order to avoid/prevent...