Pile Schematics, Notations and Abbreviations¶

Pile Schematics¶

Consolidating the various data sources presented the challenge of referring to the same pile features with different names and symbols. In an effort to standardize and facilitate analytical processes, the following schematics were produced showing all relevant symbols.

Steel H-Piles¶

Schematic shown in Fig. 3. Section details for english H-Piles are provided in Table 7.

Fig. 3 Appendix: H-Pile Schematic¶

Table 7 Appendix: Section details for English H-Piles¶
Section	Area	Perimeter	Depth	Web Thickness	Width	Box Area	Box Perimeter
	A	P	d	t_w	b_f	A_b	P_b
	in²	in	in	in	in	in²	in
HP14x117	34.4	86.35	14.21	0.805	14.885	211.5	58.19
HP14x102	30	85.75	14.01	0.705	14.785	207.1	57.59
HP14x89	26.1	85.21	13.83	0.615	14.695	203.2	57.05
HP14x73	21.4	84.55	13.61	0.505	14.585	198.5	56.39
HP12x84	24.6	72.37	12.28	0.685	12.295	151.0	49.15
HP12x74	21.8	71.91	12.13	0.605	12.215	148.2	48.69
HP12x63	18.4	71.35	11.94	0.515	12.125	144.8	48.13
HP12x53	15.5	70.87	11.78	0.435	12.045	141.9	47.65
HP10x57	16.8	59.75	9.99	0.565	10.225	102.1	40.43
HP10x42	12.4	58.87	9.7	0.415	10.075	97.73	39.55
HP8x36	10.6	47.77	8.02	0.445	8.155	65.40	32.35

Pipe Piles (Open and Closed Ended)¶

Schematic shown in Fig. 4.

Fig. 4 Appendix: Pipe Pile Schematic¶

Concrete Piles (All Sections)¶

Schematic shown in Fig. 5.

Fig. 5 Appendix: Driven Concrete Pile Schematic¶

(6)¶\[\alpha = b \tan \dfrac{\pi}{n}\]

Timber Piles¶

Schematic shown in Fig. 6.

Fig. 6 Appendix: Timber Pile Schematic¶

Cast-in-place Concrete Piles¶

Schematic shown in Fig. 7.

Fig. 7 Appendix: Cast-in-place Concrete Pile Schematic¶

Notations and Abbreviations¶

Various notation styles are encountered across literature. This document uses symbols adopted from Hannigan et al., 2016a and Fellenius, 1999. Fig. 8 presents a quick reference to the most commonly used symbols. See below for the complete list.

Fig. 8 Appendix: Typical profile view with embedded pile and associated symbols¶

\(h_w\): Depth to groundwater table (feet/meters)
\(h_i\): Soil layer height (feet/meters)
\(b\): Pile diameter/side (inches/centimeters)
\(L\): Pile length, total (feet/meters)
\(D\): Pile length, embedded (feet/meters)
\(A\): Pile cross sectional area (sq.in/sq.cm)
\(A_p\): Pile cross sectional area, toe (sq.in/sq.cm)
\(A_{pp}\): Pile cross sectional area, plugged (sq.in/sq.cm)
\(A_s\): Pile shaft surface area (sq.ft/sq.m)
\(A_{si}\): Pile shaft surface area, interior (sq.ft/sq.m)
\(A_{so}\): Pile shaft surface area, exterior (sq.ft/sq.m)
\(R_n\): Nominal resistance, total (tons/MN)
\(R_s\): Nominal shaft resistance (tons/MN)
\(R_p\): Nominal toe resistance (tons/MN)
\(f_s\): Unit shaft resistance, adhesion (…)
\(f_{si}\): Unit shaft resistance, interior (…)
\(f_{so}\): Unit shaft resistance, exterior (…)
\(q_p\): Unit toe resistance (…)
\(N\): Uncorrected field SPT resistance value
\(N_1\): SPT N value corrected for overburden stress
\(N_{60}\): SPT N value corrected for 60% energy transfer
\((N_1)_{60}\): SPT N value corrected for energy and overburden stress
\(Q_c\): Pile calculated load (capacity), often referred to as nominal resistance, \(R_n\) (tons/MN)
\(Q_m\): Pile measured (aka interpreted) capacity as obtained from static load tests (tons/MN)
\(Q_p\): Pile predicted capacity obtained from statistical and predictive models (tons/MN)
\(E\): Elastic modulus of material, Young’s modulus (…)