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4 9 <br /> Puncheons: Puncheons are structures made up of rough-cut logs. The bottom members <br /> consist of sill log base placed horizontally on a wet area to provide a base for a log stringers <br /> that support a deck of rough-cut planks(see Puncheon detail). This construction technique <br /> is useful where soil conditions will not support uptight pilings. The softer the soil conditions, <br /> the greater the frequency and length of horizontal sill support logs that will be needed to <br /> support the stringers and deck. <br /> Considerable judgment is needed in the use and placement of this type of construction; in <br /> flood ways and flood plain areas,this type of construction can be washed away because <br /> these are unanchored structures.The big advantage of this type of construction is that it <br /> utilizes rough-cut local timber at relatively low cost in remote areas where transportation can <br /> be costly. <br /> Typical Puncheon Constn cti4.n Detail <br /> Not to Scale <br /> End ViewI-48' Wheel guard <br /> f Deck to be level 0)�/4"diameter <br /> 3' min.hardwood deck <br /> A �� ,-4----Stringer 8" - 10'diameter___ <br /> '2=1.-^.°.V Sill logk. <br /> Ef —-®�- <br /> -t- 14'- 12° - <br /> Side View <br /> Wheel guard Spike <br /> TrajjTapgr Decking <br /> sufiace i i��a mime > M ,1 <br /> /11 Fill ' ,, , I arir�mrmmi�ar�'m�n& - <br /> 111111111111 : <br /> pf • . G - � <br /> 0!S <br /> sill <br /> log <br /> A ., Wet , , Go . , o s . . <br /> Vo �1 ----0-1. ----8'- 12' 3.'— --.rI . J <br /> Top View <br /> A __ Decking Wheel guard 1 11 , <br /> ... .r 11,.�ill 1T....� ; li _._. <br /> 4 1 , \ � <br /> i a, i ,,,i,,„ : Tie stringers <br /> 10' i" ;, ; ,I i 'I':' are the same <br /> 11?1 ! d I:, dimensions <br /> ' I ' iIn i{:I r' as stringers <br /> a iii I <br /> 1 iii ,3i.. ! 1 ----. <br /> F, <br /> Stringer $ J <br /> o <br /> Spike Spike ''Silllog'� <br /> 8'- 12 ---------4-1-*----- 3'----1,..1 <br /> 13 80 <br />