Tests were carried out to determine the resistance of lumber bolted to concrete and subjected to ramp loading in the longitudinal direction of the wood. Specimens were made from Hem-Fir and from SPF lumber. Anchor bolt sizes studied were nominal 1/2 in. and 3/4 in. in diameter. Both lumber and anchor bolts were representative of material usually used in the construction of low-rise timber structures. It was found that the minimum strength of a connection with a single bolt exceeds the characteristic strength used by current design procedures in CSA O86.1 by a factor of 1.6 for 1/2 in. diameter bolts and a factor of 2.0 for 3/4 in. diameter bolts. Reasons for this underestimate of the strength of bolted wood-to-concrete connections are attributed to (a) a low estimate of the calculated embedment strength of bolts in wood, (b) a low estimate of the embedment strength of bolts in concrete, (c) bolt yield strength 14 to 37 percent higher than that specified in CSA O86.1, and (d) lack of a model for the strength of bolted connections which accounts for the anchorage of wood provided by washers, and friction between the concrete and the wood member. Some changes in the current design method which would improve the ability of this procedure to predict the strength of bolted wood-to-concrete connections are recommended.