How to bid Interior Demo - Contractor Talk - Professional Construction and Remodeling Forum

john1066 · 01-20-2008, 10:47 PM

We are working on bidding a job in a high school to gut the eniter building. its all Metal laten plaster walls 3 stories about 5000 sf per floor. there is enough room to run a bobcat or small excavator on each floor and all the asbestos will be abated before it starts but how would you go about actually bidding the demo work.

orson · 01-20-2008, 11:03 PM

Craftsman's National Construction Estimator gives demo rates in one of it's cost books on a SF basis and even allows you to calculate the amount of waste. Of course, you have to take those things with a grain of salt, but on a project that big you should be able to achieve an efficient system in short order.

Removal of plaster on walls
__________________________________________________ ________________________
Craft@Hrs Unit Material Labor Total
__________________________________________________ ________________________
Plaster on walls, cost per square foot removed by hand
(150 SF per CY and 8 lbs. per SF) BL@.015 SF -- 0.49 0.49

Translation: $.49 SF that's a from the wall to the dumpster price.

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john1066 · 01-20-2008, 11:07 PM

would you go about it with the skid steer and excavator or with laborers.

A W Smith · 01-20-2008, 11:17 PM

what about Lead abatement? if its a government owned school building aren't they requiring abatement of the paint?

john1066 · 01-21-2008, 10:12 PM

no its a private school and it doesn't have much lead paint that has been done before

A W Smith · 01-21-2008, 10:29 PM

wire lath over wood studs plaster with NO ceramic tile. But I'm guessing theres ceramic tile in the hallways?

try 52 bucks a lineal foot of wall for all partitions includes both sides and see what that comes out to for bare costs less dumpsters,

tell me what your ceilings are.

well you be removing floor finish as well? Plumbing?

john1066 · 01-22-2008, 06:38 PM

the floors and ceilling are coming out in the abatemetn due to asbestos. the plumbing and electrical are being removed. How would you figure on the ammount of dumpsters.

A W Smith · 01-22-2008, 08:09 PM

Quote:

Originally Posted by john1066

the floors and ceilling are coming out in the abatemetn due to asbestos. the plumbing and electrical are being removed. How would you figure on the ammount of dumpsters.

Orson already answered that above

Quote:

Plaster on walls, cost per square foot removed by hand
(150 SF per CY and 8 lbs. per SF) BL@.015 SF -- 0.49 0.49

Assuming 8 foot high walls double sided, Looks like you will need a 30 yard dumpster 18 ton load for every 250 lineal feet of wall at minimum. If your walls are 10 feet figure 20% more, And thats plaster and lath alone. You will need more dumpsters for the framing.

and speaking of framing. if its metal you will separate it out for recycling. In fact recycle whatever ever you can because it is far cheaper than landfill.

john1066 · 01-23-2008, 09:57 PM

Thanks for the information guys were turning our bid in on Tuesday so hopefully we will get the job.

XanadooLTD · 02-06-2008, 09:41 AM

Let us know if you get the job.

john1066 · 06-06-2008, 08:51 PM

we got the job and finnished in and only hauled out 3 loads of trash about 15 loads of plaster and 20 loads of scrap metal. the best thing is we have our own roll off truck so it worked out for us all around.