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I Joist Hole Chart

I Joist Hole Chart - Web 1.using table a, table b, or both if required, determine the hole shape/size and select the tji® joist and depth. Of web (minimum) at top and bottom of hole. Floor and roof joists, posts, insertions for open web joists (on request) several series available for a variety of needs. 19.5 m (64 ft) guaranteed against manufacturing defects. Maintain the required minimum distance from the end and the intermediate or cantilever. Allowable holes for tji joists, timberstrand, microllam, and parallam. For applications with other than uniformly distributed loads, an engineering analysis may be required based on the use of the design properties. Refer to the hole chart on page 9 of the tji® specifiers guide for uniformly loaded joists. Distance from table b o iw hole may be cut anywhere in web outside of hatched zone do not cut holes larger. Maximum roof spans snow load = 40 psf, dead load = 15 psf joist depth joist series slope of 1/4:12 to 4:12 slope of >4:12 to 8:12 slope.

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No More Than 3 Holes Per Span Are Permitted.

Read the corresponding joist series, depth and spacing. Measurement shown is minimum distance from edge of hole to support. Add r10 insulative wall sheathing beneath the new siding. For floor systems that require both simple span and continuous span joists, it is a good idea to check both before selecting a joist.

Round Hole Size Square Or Rectangular Hole Size 4 6 7 8 10 12 14¾ 16¾ 18¾ 20 4 6 7 8 10 12 14¾ 16¾ 18¾ 20 18

Find a span that meets or exceeds the required clear span. Add r10 insulative wall sheathing or r13 batt. Web it can analyze specific hole sizes and locations for the actual joist loading and span condition. Add r5 insulative wall sheathing or r13 batt.

Often, Hole Size Can Be Increased And Holes Can Be Placed Closer To Bearing Than Shown On The Chart Based On Actual Design Spans And Loads.

We offer longer lengths so that ceilings and floors can be designed with fewer pieces, saving time on installation. Any, installation, design & specification categories. Add r15 insulative wall sheathing or r19 batt. Of web (minimum) at top and bottom of hole.

Scan Horizontally Until You Intersect The Correct Hole Size Column.

Table b—intermediate or cantilever support. Basement or crawlspace wall insulation: Common mistakes when drilling holes in tji joists. For applications with other than uniformly distributed loads, an engineering analysis may be required based on the use of the design properties.

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