Timber Morticed Post And Rail Fence

By Huu Khanh Nguyen · Updated October 28, 2026 · timber, fence, post and rail, morticed, mortice, prick post, agricultural, BS 1722

A straight run of sawn posts with square rails passed through mortices in the posts and a prick post at the middle of every bay. Three or four rails Prick posts or none Timber species or colour

Parameters

Name	Default	Unit
Run Length	8475	mm
Post Depth	125	mm
Fence Height	1500	mm
Bay Width	2725	mm
Distribution	count
Rails	4
Post Width	75	mm
Finish	white
minPitch	postWidth + 400	mm
span	sizeX - postWidth	mm
nominalPitch	distribution == 'distance' ? bayWidth : bayWidth + postWidth	mm
bayCount	Math.max(1, Math.ceil(span / nominalPitch - 1e-9))
lastBay	span - (bayCount - 1) * nominalPitch	mm
merged	distribution != 'count' && bayCount > 1 && lastBay < minPitch