{"id":12027,"date":"2024-10-16T20:53:35","date_gmt":"2024-10-16T20:53:35","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/astm-d6815\/"},"modified":"2024-10-24T11:37:04","modified_gmt":"2024-10-24T11:37:04","slug":"astm-d6815","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/astm\/astm-d6815\/","title":{"rendered":"ASTM-D6815"},"content":{"rendered":"<\/p>\n<p id=\"s00002\">1.1 This specification provides a procedure for testing and evaluating duration of load and creep effects of wood and wood-based materials relative to an accepted duration of load adjustment model. This specification was created for products that are currently covered by a consensus standard (for example, lumber, structural composite lumber, and structural-use panels). This procedure is intended to demonstrate the engineering equivalence to the duration of load and creep effects of visually graded lumber as specified in Practice D245 for a product under evaluation used in dry service conditions. This procedure is not intended to evaluate the performance of products under impact loading. Quantification of specific duration of load or creep factors is beyond the scope of this specification. For further guidance regarding the applicability of this specification refer to X1.1 in the Commentary.<\/p>\n<p id=\"s00003\">1.2 Use of the procedure in this specification to determine equivalence to the Practice D245 duration of load relationship is limited to solid wood and wood-based products whose long term load behavior is similar to that of solid wood. Equivalence demonstrated in this specification is dependent upon evaluation of a product&#8217;s 90-day (minimum) creep-rupture performance. In this evaluation, three criteria must be satisfied: ( <span class=\"italic\">1<\/span> ) adequate strength over a 90-day period, ( <span class=\"italic\">2<\/span> ) decreasing creep rate, and ( <span class=\"italic\">3<\/span> ) limited fractional deflection. A summary of the development of these criteria and the underlying assumptions behind them is provided in the Commentary in Appendix X1 and Appendix X2.<\/p>\n<p id=\"s00004\">1.3 Long term degradation phenomena not described by a creep-rupture model are not addressed in this specification (see Commentary X1.2.4).<\/p>\n<p><h4>PDF Catalog<\/h4>\n<table border=\"1px\" class=\"des-table\">\n<tr>\n<th>PDF Pages<\/th>\n<th>PDF Title<\/th>\n<\/tr>\n<tr>\n<td><b>1<b><\/td>\n<td>Scope <br \/> Referenced Documents <br \/> Terminology  <\/td>\n<\/tr>\n<tr>\n<td><b>2<b><\/td>\n<td>Significance and Use <br \/> Test Methods and Acceptance Criteria  <\/td>\n<\/tr>\n<tr>\n<td><b>4<b><\/td>\n<td>Retest Option <br \/> Report <br \/> Precision and Bias <br \/> Keywords  <\/td>\n<\/tr>\n<tr>\n<td><b>5<b><\/td>\n<td>X1. COMMENTARY ON DURATION OF LOAD EFFECTS IN WOOD PRODUCTS <br \/> X1.1 Scope <br \/> X1.2 Background <br \/> X1.3 Duration of Load Results for Solid Sawn Structural Size Lumber  <\/td>\n<\/tr>\n<tr>\n<td><b>6<b><\/td>\n<td>X1.4 Duration of Load Evaluation Procedure <br \/> FIG. X1.1   <\/td>\n<\/tr>\n<tr>\n<td><b>7<b><\/td>\n<td>FIG. X1.2  <br \/> FIG. X1.3   <\/td>\n<\/tr>\n<tr>\n<td><b>8<b><\/td>\n<td>X1.5 Example Evaluations <br \/> FIG. X1.4  <br \/> TABLE X1.1  <\/td>\n<\/tr>\n<tr>\n<td><b>9<b><\/td>\n<td>X2. COMMENTARY ON CREEP EFFECTS IN WOOD PRODUCTS <br \/> X2.1 Scope <br \/> X2.2 Background <br \/> X2.3 Creep Results for Solid Sawn, Structural Composite Lumber and Structural Panels <br \/> TABLE X2.1  <\/td>\n<\/tr>\n<tr>\n<td><b>10<b><\/td>\n<td>X2.4 Example Fractional Deflection and Creep Rate Determination <br \/> TABLE X2.2  <\/td>\n<\/tr>\n<tr>\n<td><b>11<b><\/td>\n<td>REFERENCES <br \/> FIG. X2.1  <br \/> FIG. X2.2   <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"<p><b>D6815-09 Standard Specification for Evaluation of Duration of Load and Creep Effects of Wood and Wood-Based Products<\/b><\/p>\n<table class=\"shortdes-table\" style=\"width: 100%\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td>Published By<\/td>\n<td>Publication Date<\/td>\n<td>Number of Pages<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/pdfstandards.shop\/product-category\/publishers\/astm\/\"><b>ASTM<\/b><\/a><\/td>\n<td>2009<\/td>\n<td>12<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":12028,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2637],"product_tag":[],"class_list":{"0":"post-12027","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-astm","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/12027","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/12028"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=12027"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=12027"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=12027"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}