http://www.woodscienceconsulting.com/wood-science-consulting-blog- daily 0.75 2020-10-01 https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1436981025180-5UOR3QAOBSM41LPZR1VJ/2892865134_3af8b97c20_o.jpg Wood Products Topics, Projects and Issues http://www.woodscienceconsulting.com/wood-science-consulting-blog-/2018/10/2/use-of-treated-wood monthly 0.5 2018-10-04 http://www.woodscienceconsulting.com/wood-science-consulting-blog-/2018/2/22/woodstock-and-wood-technology monthly 0.5 2018-03-01 https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1519338479433-4YQUHAKVX9M4R69XQ3ZR/IMG_8804.jpg Wood Products Topics, Projects and Issues - Woodstock and Wood Technology Photo 1 - Richie Havens opening at Woodstock. Stage is constructed with plywood panels that have distinctive paint markings and black triangles. https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1519339663020-ZO0OGHJWBHH90CGSCYJT/IMG_8797+copy.jpg Wood Products Topics, Projects and Issues - Woodstock and Wood Technology Photo 2 - Authentic DFPA plywood grade mark consistent with the time frame of Woodstock on one of my clients plywood samples. https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1519916692671-MA0J6IA79K5A4XC65BKU/Example+PS+1+66+mark.jpg Wood Products Topics, Projects and Issues - Woodstock and Wood Technology Photo 3 - Example DFPA plywood grade marks intiated in 1996 per PS 1-66 (Provided by the APA-The Engineered Wood Association). https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1519340099717-2VX6BWXDWN78GSC42L6F/IMG_0116+copy.jpeg Wood Products Topics, Projects and Issues - Woodstock and Wood Technology Photo 4 - Painted plywood panels consistent with those shown in Photo 1. http://www.woodscienceconsulting.com/wood-science-consulting-blog-/2016/11/23/timber-grading-and-assessment-on-vacation monthly 0.5 2016-11-27 https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1479915189379-2SB3B0UT3GFMTVO9SYNK/image-asset.jpeg Wood Products Topics, Projects and Issues - Unexpected Surpise on Vacation Turns into an Impromptu Timber Assessment Lower portion of the upper spire. Most of the timbers appear select structural and No.1. https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1479915246758-J7UPUZUIUXUNPBKB2MOR/image-asset.jpeg Wood Products Topics, Projects and Issues - Unexpected Surpise on Vacation Turns into an Impromptu Timber Assessment Top of the upper spire. Checks and splits are typical. https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1479916338376-E9YDBGJ35I0J4IPT5UZ8/image-asset.jpeg Wood Products Topics, Projects and Issues - Unexpected Surpise on Vacation Turns into an Impromptu Timber Assessment Mix of timber grades including select structural, No.1 and No.2. https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1479916051617-F5U94E8OGU9CKQOFFIHU/image-asset.jpeg Wood Products Topics, Projects and Issues - Unexpected Surpise on Vacation Turns into an Impromptu Timber Assessment A portion of the massive bell system in the upper spire. https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1479915311145-EUTS5S9WS98UEOD0UE64/image-asset.jpeg Wood Products Topics, Projects and Issues - Unexpected Surpise on Vacation Turns into an Impromptu Timber Assessment Pretty interesting knot configuration. https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1479915341380-X9TYUY45RSQTM04SI3HC/image-asset.jpeg Wood Products Topics, Projects and Issues - Unexpected Surpise on Vacation Turns into an Impromptu Timber Assessment Old and inactive powder post beetle damage in the sapwood. https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1479915366031-ZIYCF4D78AU5VX0TUDKE/image-asset.jpeg Wood Products Topics, Projects and Issues - Unexpected Surpise on Vacation Turns into an Impromptu Timber Assessment Typical check. https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1479915399631-WDALVMRR84YVX3P1OL7U/image-asset.jpeg Wood Products Topics, Projects and Issues - Unexpected Surpise on Vacation Turns into an Impromptu Timber Assessment Typical check. https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1480260182960-H9YQJ7CVLR086OFJNX1U/image-asset.jpeg Wood Products Topics, Projects and Issues - Unexpected Surpise on Vacation Turns into an Impromptu Timber Assessment Mission accomplished. http://www.woodscienceconsulting.com/wood-science-consulting-blog-/2016/8/16/resistograph-drilling-used-to-document-termite-powder-post-beetle-and-wood-decay-in-old-historic-residence monthly 0.5 2016-09-08 https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1471375427488-ADTRCYDE3ZORU9YRSFEY/image-asset.jpeg Wood Products Topics, Projects and Issues - Resistograph Drilling Used to Document Hidden Damage in an Old Historic Residence Historical residence located in Stanfordville, New York. https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1471960566704-JC3USXPZB805SWEOY6IU/image-asset.jpeg Wood Products Topics, Projects and Issues - Resistograph Drilling Used to Document Hidden Damage in an Old Historic Residence Photo 1 - Here are exit holes caused by powder post beetles on a timber in my basement. https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1472050008397-F0QE7OK0LU01HBTRUKHX/image-asset.jpeg Wood Products Topics, Projects and Issues - Resistograph Drilling Used to Document Hidden Damage in an Old Historic Residence Photo 2 - Here are the powder packed holes caused by the beetles as they mature prior to laying eggs and then exiting the timber as an adult. As you can see the damage is limited to the outer 1/4" of the timber. https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1472050040756-3P6Z55JTK8L6PKQR0DEN/image-asset.jpeg Wood Products Topics, Projects and Issues - Resistograph Drilling Used to Document Hidden Damage in an Old Historic Residence Photo 3 - First level girder with powder post beetle damage on the surface. Resistograph testing indicated a void in the center of this element at the mid-span in the center of the basement which was later found to be the result of termites and wood decay (see photo 4). https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1472050512752-U88QBH4ELH4QRWDSGBSD/image-asset.jpeg Wood Products Topics, Projects and Issues - Resistograph Drilling Used to Document Hidden Damage in an Old Historic Residence Photo 4 - Void detected in the center of a girder at the mid-span. Void was found to be the result of termite attack and wood decay. https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1471375461618-OGFN9L9Q2RXN6IH1XE8P/image-asset.jpeg Wood Products Topics, Projects and Issues - Resistograph Drilling Used to Document Hidden Damage in an Old Historic Residence Photo 5 - Untreated lumber embedded in the foundation wall of the first level floor system. Significant wood decay and termite damage was detected inside the pocket by testing the built up girder with the Resistograph. https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1472050585184-IAKW9ODNFKJLXGS9E0H9/image-asset.jpeg Wood Products Topics, Projects and Issues - Resistograph Drilling Used to Document Hidden Damage in an Old Historic Residence Photo 6 - Little to no resistance detected in built up girder inside foundation pocket. Indicates advanced wood decay. http://www.woodscienceconsulting.com/wood-science-consulting-blog-/2016/8/16/resistograph-drilling-effective-in-assessment-of-charred-timber-in-historic-structure monthly 0.5 2016-09-08 https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1471372497221-W8WN47EE6TXIB95O0ZR2/IMG_5233.resize.jpg Wood Products Topics, Projects and Issues - Resistograph Drilling Effective in Assessment of Charred Timbers in Historic Structures Main Street, Louisville, Kentucky. https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1471958790558-2V38A0FPEUE1ADF3DVQO/image-asset.png Wood Products Topics, Projects and Issues - Resistograph Drilling Effective in Assessment of Charred Timbers in Historic Structures Figures 3 and 4 from Post-Fire Analysis of Solid-Sawn Heavy Timber Beams. White, Robert H. and Frank E. Woeste. Structure Magazine, November 2013. https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1471371888619-I2ADUVSSWR0OHL6DB1T2/20160707_093331.jpg Wood Products Topics, Projects and Issues - Resistograph Drilling Effective in Assessment of Charred Timbers in Historic Structures Photo 1 - Level 1 charring, slight or no cubical formation visible (courtesy of GEM Engineering). https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1472581113278-639EGF3ORH40DGCXBYBE/image-asset.jpeg Wood Products Topics, Projects and Issues - Resistograph Drilling Effective in Assessment of Charred Timbers in Historic Structures Photo 2 - Char depth pf 1/8" detected in a level 1 rated timber. https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1471371913384-125DDTX0VEX8PU8U8IC5/image-asset.jpeg Wood Products Topics, Projects and Issues - Resistograph Drilling Effective in Assessment of Charred Timbers in Historic Structures Photo 3 - Level 2 charring, minor cubical formation visible (courtesy of GEM Engineering). https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1472568286639-GDUL6UKHAZXIFA9LZW9S/image-asset.jpeg Wood Products Topics, Projects and Issues - Resistograph Drilling Effective in Assessment of Charred Timbers in Historic Structures Photo 4 - Char depth of 1/4" detected in a level 2 rated timber. https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1471371935946-5QHXO7V3RPU0I7ZPUWAT/image-asset.jpeg Wood Products Topics, Projects and Issues - Resistograph Drilling Effective in Assessment of Charred Timbers in Historic Structures Photo 5 - Level 3 charring, cubical formation with some visible loss in cross section. https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1472568376177-2CRTCUC7RD4AVWFO577H/image-asset.jpeg Wood Products Topics, Projects and Issues - Resistograph Drilling Effective in Assessment of Charred Timbers in Historic Structures Photo 6 - Char depth of 9/16" detected in a level 3 rated timber. https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1471371953517-B7FF5AJ923W036EHDFVO/image-asset.jpeg Wood Products Topics, Projects and Issues - Resistograph Drilling Effective in Assessment of Charred Timbers in Historic Structures Photo 7 - Level 4 charring, distinct cubical formation, and visible loss in cross section. https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1472568511817-WGTAJ5SHC9QCE058XLOX/image-asset.jpeg Wood Products Topics, Projects and Issues - Resistograph Drilling Effective in Assessment of Charred Timbers in Historic Structures Photo 8 - Char depth of 3/4" detected in a level 4 rated timber. http://www.woodscienceconsulting.com/wood-science-consulting-blog-/2015/7/30/checks-and-splits monthly 0.5 2016-12-15 https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1459345130034-Y65MO5P3GG170FK3G3DO/image-asset.jpeg Wood Products Topics, Projects and Issues - Understanding Checks and Splits in Lumber and Timbers In-situ Figure 4-3 from the Wood Handbook, FPL-GTR-190 https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1459348545193-NREY7ZI5G4F07A2F6H6O/image-asset.jpeg Wood Products Topics, Projects and Issues - Understanding Checks and Splits in Lumber and Timbers In-situ Upper left image shows two large timber benches with visible splits on both ends as a result of seasoning. These are considered normal. Each of the red arrows points to how the checks would look in-situ. https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1459348802737-E9TGUFQIOAH2I32ON61L/image-asset.jpeg Wood Products Topics, Projects and Issues - Understanding Checks and Splits in Lumber and Timbers In-situ Timber with a large split revealing steep slope of grain. As a result this timber has partially failed in-situ. https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1459349685523-1P57SVXN4LA0FQMH3W1X/image-asset.jpeg Wood Products Topics, Projects and Issues - Understanding Checks and Splits in Lumber and Timbers In-situ The timber illustrated in this image was inspected from two adjacent rooms. Large checks were observed in the timber in one room (left image) while small checks were visible in the timber in the adjacent room (right image). Using a Resistrograph, one of the separations was found to be either a shake or a split and the other a large check. The timber was in compression, so the separations were not considered an issue. http://www.woodscienceconsulting.com/wood-science-consulting-blog-/2016/2/2/wood-pathology-and-buildings monthly 0.5 2016-02-23 https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1454920861289-XKWDPWQ2QMBEFEZE6B8N/image-asset.jpeg Wood Products Topics, Projects and Issues - Wood Pathology and Structures http://www.woodscienceconsulting.com/wood-science-consulting-blog-/2016/2/2/wood-decay-and-strength-loss monthly 0.5 2016-02-21 https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1455800388418-17J28PO6P1I5NT3ZH297/image-asset.jpeg Wood Products Topics, Projects and Issues - Wood Decay and Strength Loss At 400X magnification, a well-defined network of "root-like" wood decay hyphae are visible in nearly every wood cell in the image above. This is the incipient stage of wood decay which can only be seen microscopically and which can result in significant strength loss. https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1454930077824-2UN5LVHMK2X9562FZ1GF/image-asset.png Wood Products Topics, Projects and Issues - Wood Decay and Strength Loss Photo 1 - Image on the left illustrates advanced wood decay with cubical pattern and complete decomposition. the image on the right shows intermediate wood decay with evident changes in wood color and fungal growth on the surfaces of some pieces. https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1456071050579-K23C3ONKP6T4FJUW9O6G/image-asset.jpeg Wood Products Topics, Projects and Issues - Wood Decay and Strength Loss Photo 2 - The image on the left shows a short splinter with a brash failure resulting from a pick test. The image on the right is a photomicrograph illustrating a network of root-like wood decay hyphae in several wood cells. This verified the presence of incipient wood decay in the wood element shown on the left. http://www.woodscienceconsulting.com/wood-science-consulting-blog-/2016/1/29/resistograph-testing-and-the-importance-of-increment-cores monthly 0.5 2016-11-22 https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1455800166173-3IVAIX490T0U0UBYEV8R/image-asset.png Wood Products Topics, Projects and Issues - Nondestructive Testing with a Resistograph Update: The Importance of Microbiological Analyses https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1455025874694-09MGEKIZH1NLQVR32PSQ/IMG_0112.jpg Wood Products Topics, Projects and Issues - Nondestructive Testing with a Resistograph Update: The Importance of Microbiological Analyses Photo 1 - Glulam arch with advanced decay in the bottom 1' which was detected by the Resistograph and displayed on the charts. The blue dots represent the three locations where increment cores were extracted. Consistent relative density profiles were collected with the Resistograph at 2' and 3', however, the increment core collected at the 2' exhibited a distinct network of early wood decay to the center of the arch (see photo 2). At the 3' height incipient levels were observed, but were limited in depth. No wood decay was observed in the core collected at the 4' height. https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1454930369474-PC1KA09HSVO9R2MDYB30/IMG_0108.jpg Wood Products Topics, Projects and Issues - Nondestructive Testing with a Resistograph Update: The Importance of Microbiological Analyses Photo 2 - The image on the left shows a network of wood decay hypae (i.e. root-like structures) in every wood cell at the 2' height of the glulam arch. The image on the right shows much lower levels of wood decay hyphae at the 3' height of the glulam arch. http://www.woodscienceconsulting.com/wood-science-consulting-blog-/2015/12/2/how-to-determine-design-values-of-lumber-and-timbers-in-situ monthly 0.5 2017-04-06 https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1453335409180-BN0ESBHLO2M4OOTC6WF1/image-asset.jpeg Wood Products Topics, Projects and Issues - Determining Recommended Allowable Design Values for Lumber and Timbers in Structures. Philadelphia Navel Shipyard - Large timber frame structure https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1451955974056-VKQJ6NDWPYEP7NVDHQ31/image-asset.png Wood Products Topics, Projects and Issues - Determining Recommended Allowable Design Values for Lumber and Timbers in Structures. Split in timber reveals a 1:7 slope of grain resulting in a No.2 visual grade. https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1451956168184-4LPGCGN9MU35GWWTJ88U/IMG_0104.JPG Wood Products Topics, Projects and Issues - Determining Recommended Allowable Design Values for Lumber and Timbers in Structures. Wide-face knot with distorted grain measuring 3 1/2" diameter in a 2x10, resulting in a No.2 visual grade. https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1452613414262-FZCHILJM60M4NOK30SLB/image-asset.jpeg Wood Products Topics, Projects and Issues - Determining Recommended Allowable Design Values for Lumber and Timbers in Structures. Photo shows painted timber with a depression in the coating that revealed a 1:6 slope of grain as a result of a split. The large split to the right of the ruler was the initial indicator for the presence of slope of grain. Rockefeller Hall. Cornell University, Ithaca, NY. https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1451956082356-QNMI8F89473I3MTNK0M5/image-asset.jpeg Wood Products Topics, Projects and Issues - Determining Recommended Allowable Design Values for Lumber and Timbers in Structures. Staging for access into the Highland Presbyterian Church roof system. Photo courtesy of Senler, Campbell and Associates, Inc. Staging installed by Schaeffer General Contracting Services. GEM Engineering also provided materials testing consulting. http://www.woodscienceconsulting.com/wood-science-consulting-blog-/2015/10/23/wood-bowstring-trusses monthly 0.5 2016-08-29 https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1457104284200-NQS7C0YPYNCU299LBN77/image-asset.jpeg Wood Products Topics, Projects and Issues - Inspecting Bowstring Trusses Constructed with Dimension Lumber, Timbers and Glulam's Westchester County Airport https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1457104354529-LUZGSLDPCLXBRFSIKXQY/image-asset.jpeg Wood Products Topics, Projects and Issues - Inspecting Bowstring Trusses Constructed with Dimension Lumber, Timbers and Glulam's Westchester County Airport http://www.woodscienceconsulting.com/wood-science-consulting-blog-/2015/10/8/wood-decay-in-simple-terms monthly 0.5 2016-03-25 https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1445596367532-F6OL1F6A3DTTEAPZQ2L1/IMG_0542.jpg Wood Products Topics, Projects and Issues - Wood decay - In Structures and In Shiitake Cultivation Shiitake mushrooms fruiting on logs https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1445678472251-EEU2YK7B42RXX333HZNY/wooddecay.jpg Wood Products Topics, Projects and Issues - Wood decay - In Structures and In Shiitake Cultivation A simplified demonstration of the wood decay cycle (Figure 14-3 from the USDA Forest Products Laboratory General Technical Report FPL-GTR-190.) https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1445596678698-EC3J5X3PAMA099XD8YLW/image-asset.jpeg Wood Products Topics, Projects and Issues - Wood decay - In Structures and In Shiitake Cultivation The drilling of shiitake log. https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1445596625988-G1FU37XE0C6EWU6J63OZ/image-asset.jpeg Wood Products Topics, Projects and Issues - Wood decay - In Structures and In Shiitake Cultivation The addition of inoculant to the drilled holes. https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1445596573329-CZLAF3J6O71FQ1ORNZ83/image-asset.jpeg Wood Products Topics, Projects and Issues - Wood decay - In Structures and In Shiitake Cultivation The sealing of the holes with wax. https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1445624650908-ZGF4PZLCQI60FO38J9DR/IMG_3221.jpg Wood Products Topics, Projects and Issues - Wood decay - In Structures and In Shiitake Cultivation This set of two images are actual photomicrographs taken at Wood Science Consulting showing wood decay hyphae in wood cells similar to the sketch above. https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1445624699925-PIAH85R8RTU0E93TECV5/IMG_3221-1.jpg Wood Products Topics, Projects and Issues - Wood decay - In Structures and In Shiitake Cultivation This image illustrates the early state of wood decay and was taken from a structural member inside a building. The decay seen likely resulted in significant strength reductions. https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1445625590133-YIA6YC5ECCBGMZG3L9LT/image-asset.jpeg Wood Products Topics, Projects and Issues - Wood decay - In Structures and In Shiitake Cultivation Set of logs each fruiting several shiitake mushrooms after a 24 hour soak in water. https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1458906530647-AXF5E3B8BVUZQJ5NSRAL/image-asset.jpeg Wood Products Topics, Projects and Issues - Wood decay - In Structures and In Shiitake Cultivation Fruiting body on a glulam beam (Philadelphia Naval Shipyard). http://www.woodscienceconsulting.com/wood-science-consulting-blog-/2015/9/9/soft-rot-the-other-kind-of-wood-decay monthly 0.5 2016-01-21 https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1442571597770-J4JWOA6CKK5Y3LRJBQ7H/image-asset.jpeg Wood Products Topics, Projects and Issues - Revolutionary War Era Shipwreck — and Soft Rot Wood Decay Plans of the 200+ year old ship recently discovered in Maryland River (Photo courtesy of Maryland State Highway Administration) https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1442571854355-GA3VNH27T2TOH5DP2R1I/image-asset.jpeg Wood Products Topics, Projects and Issues - Revolutionary War Era Shipwreck — and Soft Rot Wood Decay Timbers are immediately re-submerged in water for preservation purposes (Photo courtesy of Maryland State Highway Administration) https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1441887928435-Y2X06YRQ4EVSYDHPLAX9/image-asset.png Wood Products Topics, Projects and Issues - Revolutionary War Era Shipwreck — and Soft Rot Wood Decay Soft rot test specimens https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1453384552493-JMO8S19U38KL4CR6C22Y/IMG_3122.jpg Wood Products Topics, Projects and Issues - Revolutionary War Era Shipwreck — and Soft Rot Wood Decay Soft rot deterioration in wood as seen by the diamonding patterns in the wood cell walls. The results in poor cellular structure, increased porosity and reduced strength. https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1442572160637-A6F127B6I9MG7MQ8QZXC/image-asset.jpeg Wood Products Topics, Projects and Issues - Revolutionary War Era Shipwreck — and Soft Rot Wood Decay (Photo courtesy of Maryland State Highway Administration) http://www.woodscienceconsulting.com/wood-science-consulting-blog-/2015/8/10/resistograph-testing-timber-structures monthly 0.5 2016-11-22 https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1441444909033-79G84ZLKVD1H09A29X8R/20150818_123821+%281%29.jpg Wood Products Topics, Projects and Issues - Nondestructive testing of timbers, utility poles, and pilings using a Resistograph (Resistance Drilling) https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1447011466713-17GCTEPJ78Q2JN7BNPKP/image-asset.jpeg Wood Products Topics, Projects and Issues - Nondestructive testing of timbers, utility poles, and pilings using a Resistograph (Resistance Drilling) https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1439626795603-WU3ZS1IWIEFAIPBZ8Z1P/image-asset.png Wood Products Topics, Projects and Issues - Nondestructive testing of timbers, utility poles, and pilings using a Resistograph (Resistance Drilling) Consistent profile, split detected at 3 3/4" to 4" https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1453504916583-VWR0U4MPBFVRRV29WQZK/image-asset.jpeg Wood Products Topics, Projects and Issues - Nondestructive testing of timbers, utility poles, and pilings using a Resistograph (Resistance Drilling) Hidden decay inside masonry bearing starting at 4 3/4" https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1447011420020-U7702PC308NDB3ZONQIR/image-asset.jpeg Wood Products Topics, Projects and Issues - Nondestructive testing of timbers, utility poles, and pilings using a Resistograph (Resistance Drilling) http://www.woodscienceconsulting.com/wood-science-consulting-blog-/2015/7/15/dry-rot-berkeley-folsom-california monthly 0.5 2016-01-18 https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1436976258978-QZMNDEEM14E8255CYIWA/image-asset.jpeg Wood Products Topics, Projects and Issues - 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Wood decay in large timber https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1491503857260-R17LHEU03OFB9J6UXNHO/113+M+28W+BM022.png Laboratory & Testing - Estimating char depth in burnt wood https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1491504002851-Q7SDVQEPZD208QD4SYHD/24+A+P3M079.png Laboratory & Testing - Sound timber https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1453050940904-SFJTOHMLKHJY8I2NWGJ9/tinius+olsen.jpg Laboratory & Testing ASTM D143 Static bending test with yoke and deflectometer https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1491492692506-5PJEPZ9YB974ZEEXSK84/horizon+software.jpg Laboratory & Testing Horizon software load/deflection curve https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1453051781572-30OUPL94FIM28ZE5PVT8/image-asset.jpeg Laboratory & Testing Nondestructive testing of marine pilings using an IML Resistograph https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1491504515793-TH6VTKRZFOJ18PM68WAG/image-asset.png Laboratory & Testing Hidden internal wood decay in glulam beam (red section). https://images.squarespace-cdn.com/content/v1/553ce7e4e4b0befb836962df/1491504597050-LCBIWXP24KOSRLTXGK2L/image-asset.png Laboratory & Testing Resistograph illustrating consistent density profile in sound wood. 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