Before designing a new project with dimensional lumber it may be worth the time to check the new span tables to see if the changes will allow less expensive material.Īs examples of the effect of this change, the span for #2 Douglas Fir 2 x 8’s 16” on center floor joists for a living room floor has been increased from 12’-7” to 12’-9”. There are span tables for floor joists, ceiling joists, rafters, headers and beams. Since most of the lumber we use in our area is Douglas Fir this may allow use of narrower boards. The change is due to more current testing data showing the lumber being harvested today is different than that of several years ago. The spans allowed for Douglas Fir lumber have increased while some other species have decreased. Give you and your clients peace of mind by including a contract with your estimates and invoices.The 2017 Oregon Residential Structures Code has revised the allowable spans for lumber. Don't have time to write a thousand words?. Show your client you mean business by featuring your logo on all your estimates and invoices. If you use a Joist Payments card reader, the rate per transaction is 2.75% and 30 cents. The standard rates for Joist Payments are 2.9% and 30 cents for credit cards, and 1.5% up to a maximum of $15 for e-checks. Many contractors will use Joist from their phone when out in the field, then switch to their computer when at home or in the office.
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