uction and Building Materials1 000)407-417 crolam is made from laminated veneers of Southern samples were made from solid timber,glulam and dhesive. Theay-up o n Fig. ess in thi ch hae a Ld ratio of 3.67.The been fully described previously 21 In summary,all experimental arrangement,showing the sample dimen sions and positioning of LVDTs for this series of tests n order to remov of which are:initial loading to 40%of the estimated maximum load(F),approximately the working load. 5.Results of the testing programme of the tested using ot sample an09n289 est connector LVDT position to o I test nt of 44 mm 100mm HT teel bolts) Section A-A Fig.2.Loading rig and LVDT positions for recording movement of the test joint. 410 T.J. Da¨is, P.A. Claisse rConstruction and Building Materials 14 2000 407 ( ) ]417 crolam is made from laminated veneers of Southern Pine timber bonded, again bonded with a PF adhesive. The lay-up of these materials is shown in Fig. 1. The testing programme utilised in this research has been fully described previously 21 . In summary, all w x wood was conditioned for 3 weeks prior to the test, which was performed in accordance with BS EN 26891 in order to give a load-deformation response. This involves a multi-stage loading regime, the key elements of which are: initial loading to 40% of the estimated maximum load Ž . F , approximately the working load, est of the joint; removal of load to 10% of F and finally est loading to failure. A total of 26 samples were tested using 12-mm diameter Grade 8.8 bolts in a 13-mm diameter hole. Six samples were made from solid timber, glulam and Parallam and 8 samples from Microlam. The samples had a nominal thickness of 44-mm, which resulted in an embedment response a L Ž . rd ratio of 3.67 . The experimental arrangement, showing the sample dimen￾sions and positioning of LVDTs for this series of tests, is reproduced in Fig. 2. The actual loading rig, with the LVDTs removed for clarity, is shown in Fig. 3. 5. Results of the testing programme A typical load-slip response resulting from the test, and the identification of the derived characteristics, is Fig. 2. Loading rig and LVDT positions for recording movement of the test joint