Cal. Code Regs. Tit. 8, div. 1, ch. 4, subch. 4, app B, Plate B-30-b - Safe Resistance to Withdrawal of Common Wire Nails

Inserted Perpendicular to Grain of the Wood, in Pounds per Linear Inch of Penetration into the Main Member

Kind of wood	Size of nail
	6d	8d	10d	12d	16d	20d	30d	40d	50d	60d
Douglas Fir or Southern Pine or Redwood..........................	27	29	35	35	39	48	52	56	61	67
Other species..........................	As determined by the enforcing agency

(3) Spacing and Penetration. Common wire nails shall have penetration into the piece receiving the point as set forth in Plate B-30-a. Nails or spikes, for which the wire gauges or lengths are not specified in Plate B-30-a, shall have a required penetration of not less than nine and one-half diameters, and allowable loads may be interpolated.

For wood to wood joints the spacing center-to-center shall be not less than the required penetration.

Edge and end distances shall be not less than one-half of the required penetration.

Holes for nails, where necessary to prevent splitting, shall be bored of a diameter smaller than that of the nails.

PLATE B-31 BOLTS

Safe loads in pounds for bolts in double shear and in seasoned lumber of the following species: cypress, southern; Douglas fir (coast and inland region); larch, wester; pine, southern yellow; in joints consisting of three members in which the side members are one-half the thickness of the main member, shall not exceed values set forth in Plates B-31-a, -b.

Notes

Cal. Code Regs. Tit. 8, div. 1, ch. 4, subch. 4, app B, Plate B-30-b