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Building Homes or Extensions/1700 lbs of tile on 2nd floor mstr bath
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Question
Remodeling mstr bath on 2nd floor of 2-story built 1975. Large shower,and new floor consists of 1700 lbs. of tile. Is this load too heavy? Room size 7 1/2 x 12'(90 sq.ft) floor joists 8" located 16 off cntr. 12' long. bulk of weight is inside shower - size is 7 1/2' x 3 1/2' located in corner of 2 outside walls. remainder of weight is in the entire floor. Thank you, I'm really concerned.
Sam, the weight isn't bad. 1700/90SF is about 20 lbs/SF. The floor was probably designed for 40 lbs/SF. The part that worries me is the deflection in the joists. Good dense select structural yellow pine joists that are 2x8 on 16" centers at l/600 deflection should not span over 11'-6". I don't know what type lumber you have and I don't really know what deflection limits your tile requires. #2 YP with l/360 deflection can go over 12'. Do some more checking on the actual lumber grade used for the joists and check with the tile manufacturer on deflection, but I suspect it will be l/600.
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| Rating(1-10) | Knowledgeability = 10 | Clarity of Response = 10 | Politeness = 10 |
| Comment | Thank you for your quick and knowledgeable response. I will check with tile manufacturer and the greade of lumber used in our home. | ||
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Answers by Expert:
Dan Griffin
Expertise
I can answer almost all questions related to the total construction process. My expertise is in commercial construction, though I can field most any residential question. I have hands on experience in concrete, heavy equipment, masonry, all phases of carpentry, interior finishes, and I am fairly strong in mechanical and electrical.
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I have over 20 years experience as a commercial carpenter and commercial construction superintendent. I have another 20 years experience in facility management for a major school district.
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My favorite hobby for he past 12 years has been singing bass in a The OkChorale men's barbershop chorus and the Mature Moments quartet.
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I hold a Bachelor's degree in English and Math. I have completed many continuing education hours in the building trades. I hold a Master Carpenter card from the AGC, Associated General Contractors.
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